Should You Get Your Harley-Davidson Dyno Tuned?

Is There Really Such a Thing as Autotune? Is it Better to Get a Dyno Tune? Should I Do Both? Are There Other Options? These, and Other Questions, Discussed in This Video.
⬇️⬇️⬇️⬇️⬇️ Click Show More Below ⬇️⬇️⬇️⬇️⬇️
➡️ LINK To More Info on TARGET TUNE- www.dkcustomproducts.com/dyno...
➡️ Link to Infor on XiED's, ViED's, Power Vision & FP3 Tuners- www.dkcustomproducts.com/efi-t...
💥 Link To a Report on Tuning Options- www.dkcustomproducts.com/overv...
💥 Link to Info & Dyno Charts on M8 Tunes- www.dkcustomproducts.com/milwa...
🏍️ Thank you for tuning in! Be sure to Like / Comment / Subscribe
✅ Get Your DK Custom Products Here
www.dkcustomproducts.com/
🛒 Our Gear & Amazon
Check out our new Amazon page for the gear we use!
www.amazon.com/shop/dkcustomp...
➡️ SOCIAL MEDIA - CONNECT WITH US
/ dkcustomproducts
/ dkcustom1
/ dkcustom
/ dkcustom
📸 Our Camera Gear: www.amazon.com/shop/dkcustomp...
EMAIL: [e-mail]
The DK Team

[@booxilla.1968]

Upgraded my 21 RG 107 with a torque 465 cam and got it dyno tuned at the shop. Wasn't real happy with the tune because I kept smelling gas when I rode. I was wanting to know if I could and should do an auto tune over that base map. Googled the question and this video came up. These guys and DK Custom answered my question and then some! Good to have people like this in the world to help when it's needed!

[@DKCustomProducts]

Glad you found the video informative! Thank you for sharing! Here is another video you may find interesting - kzbin.info/www/bejne/p4eoma2LZdiAj6c

[@LonesomeNomad137]

Yo men, how have you been. It’s been a great summer for riding, thank God I was able to clock a few thousand miles. I just had my 93FLHS tuned. The bike is running great, I’m back to work and my foot is getting better every day now. Awesome video, keep up the good work guys. I never miss a video.

[@DKCustomProducts]

Hey, Long Time! Glad to hear you have been out enjoying the wind and the ride is doing well. Super good to hear about the foot. Thanks for watching!

[@DanielRyanScott]

Very knowlegable. I plan on getting a woods torque cam in my 114 m8 and did a solid stage 1, with your catch can and thunder torque parts as well. I have a power vision 3 black edition, and will now be getting a target tune when I add the cam since I have to take off the exhaust anyways. Thanks for for the recommendation.

[@DKCustomProducts]

Thank you, glad you're finding the videos useful. We appreciate your business. Sounds like you have a good game plan, enjoy Your Ride!

[@jasonbreedlove495]

Great video guys! I had my 17 SGS tuned by my local mech, and he did amazing work. Now that my 18 heritage is no longer under warranty, I ordered a FM powervision with cam, exhaust, etc and get to tune it today, and may start autotune this weekend or next.

[@DKCustomProducts]

That is awesome! 👍

[@rschaerer98]

Thanks for putting together and sharing this info on dyno vs auto tunes. I’ve done some very extensive work on the maps using the PV basic auto tune and log analysis. After that I had it dyno’d at a Harley dealer by a technician that has years of experience working with performance engines. Here’s my wheels on the ground experience on this topic. Hopefully this may help some riders with the same questions I was asking. My experience falls pretty much in line with your video except maybe for my AFR results. 2017 freewheeler M8 107, Arlen Ness heavy breather, Wood 22X cam, CFR slip-ons, power vision tuner I started with a ‘canned’ tune from Fuel Moto, which ran fine (smooth, no decel pop, minimal spark knock detection, etc), but given my engineering background I had to play and learn more on this whole tuning process. Plus reading all I have about the con’s of CFRs I felt that the canned tune probably wasn’t set up for such open pipes. Once I learned how to make the most of the auto tune basic, I ran 12 separate sets of 3 ganged auto tunes each. (I capped the few cells that went above the 127 limit). I put all of the data into a spreadsheet, threw out the highest and lowest auto tune results and then manually programed in the average for each cell (about a 1/3 were unchanged). The results were no real changes in seat of the pants performance, but I could see through the log data that the performance had improved in my 3rd gear 2k to 5.5k rpm vs time runs. DYNO VS CANNED HP/TORQUE/AFR I then decided to go ahead and spend the $500 to have it dyno’d using the original can tune for a reference. The results were a disappointing gain of 4 to 6 ft-lbs of torque through the 2.5 and 4k RPM range (110 torque at 3.2k) and around 3hp at 3.2-4k RPM range (83hp)... I’m assuming that these low numbers are partly due to the drive train losses inherent to a trike? The good news is most of my riding is in the 3-4k RPM range and it’s more than enough to get my front wheel off the ground. CONCLUSION The canned tune was surprisingly close, OR the tuner himself was having an off day. HOWEVER, my before AFR was running 15 to 17 between 3-4k RPM and didn’t drop to 13.5 until 4.7k RPM. So the dyno did bring my AFR way down from the canned tune, especially in the front cylinder and he did make some changes to the spark advance at the higher RPMs. DETAILED DYNO VS AUTO TUNE MAP COMPARISON I wanted to take a closer look at the specific differences between the basic auto tune and canned tune vs what Harley did, so I compared the VE and spark tables of all three. If you take into account that a 5 to 7% delta is considered close for auto tuning purposes the number of cells with variations larger than that (dyno vs auto tune) was only 24 (9%) out of the total of 266 cells. When comparing the dyno to the canned tune the number of cells with variations over 10% was 77 (29%). The variations drop even further if you only view the normal riding area of the maps. So if you trust the dyno data to be right, it looks like the canned tune isn’t bad, and the basic auto tune does improve a canned tune even more. details below. I would say auto tune is not bad for a feature that comes ‘free’ with the power vision but your AFR and spark can still be off more than you’d like. Was the dyno tune worth $500, probably not for most people, but personally I like knowing that my engine is about as good as it’s going to get without changing engine components and that I’m not running too lean. Thanks again for all the great info you provide Ron VE CELL DETAILS auto tuned vs canned 2 cells VS 13 cells ABOVE 20% DELTA 5 cells VS 27 cells ABOVE 15% DELTA 17 cells VS 47 cells ABOVE 10% DELTA 84 cells VS 92 cells ABOVE 5% DELTA --------- ------- 108 197 266 TOTAL CELLS

[@DKCustomProducts]

I read your entire comment. Thank you for the detailed breakdown of your experience. We appreciate you watching and sharing. 👍

[@ADREISTER]

I've had my PC5 for almost 10 years, with a canned map. My 2008 FXDB stage 1 did just fine. Now that im at stage 2, the bike is a bit picky with the tune at different temps and elevation changes. 1000 ft up to 9000 ft in my part of the woods. Chasing numbers isn't my game, but the Power Vision is in the mail, just to have the auto tune basic...once i get to stage 3, I'll add the target tune module w/wide bands....thanks for the great helpful video.

[@DKCustomProducts]

Awesome! Sounds like you have big plans in the future! I am sure you will be well pleased with the Power Vision. Glad you like the video! Thank you for your business and for commenting! MB

[@scrapiron1965]

I recently had a stage 1& 2 completed and used the FP3. I did need to call Vance & Hines twice to make some adjustments to the map. I’m really happy with the results and especially their customer service. I tried the auto once and wasn’t really happy with the results but after the calls and tech assistance from V&H I’m really happy with my current map. Great video,

[@DKCustomProducts]

Good to hear. Glad you are happy with your tune and how your bike is running.

[@Bill-NBfarming]

I had an almost identical experience. Stage II also.

[@jackklarich7045]

Very good info here, Thanks for your work. Only thing I would say, someone with a heavy hand( aggressive riding style) may want to do 2 auto tunes and save them both to compare MPG

[@DKCustomProducts]

Hi Jack, thank you! Yeah, multiple autiotunes are a good idea!

[@Bill-ck3lo]

I bought the target tune with tab headers and auto tuned my 19 ultra …kept getting an O2 rear sensor code. I spoke with the powervision tech and he asked for my tunes. I sent them, got them back in a week, and it ran spot on after. I’m totally into powervision and dynotech!!

[@DKCustomProducts]

Great to hear you got it worked out and are experiencing the significant benefits of the TT. 👍😎👍

[@itsapittie]

Good information, as always. Thanks!

[@DKCustomProducts]

Thanks for watching! Appreciate your comment. 👍

[@RGHD912]

For me personally after high performance parts are installed straight on the dyno for break in and tune with a good tuner Powervision, tts . If you don’t see triple digits every time you ride then you’ll probably be okay with just a wide band tuner of your choice. Just my .02

[@DKCustomProducts]

Thanks for your comment.

[@paulruth83]

I put a V&H Fuelpak on my 09 Dyna Superglide and can definitely tell a difference with just Vance and Hines fuel map for my mods. I am happy with the results it gave. I don't have the extra bucks or I would have got their auto tune. A dyno tune is WAY out of my budget. Thanks for another great video.

[@DKCustomProducts]

Great to hear you are pleased with how your bike is running. That is what is important. Thanks for the comment on the videos.

[@zbittzz]

I followed DK’s recommendations for my 09 Ultra (without a dyno) and cannot be any happier!

[@DKCustomProducts]

@@zbittzz That is great to hear. Being happy with your bike is what is important! Thanks for the comment.

[@adamfields1362]

Can't like this video enough! Full of knowledge!

[@DKCustomProducts]

Thanks man, appreciate the comment, and glad you like the video!

[@Chase_N]

Autotuned with my PowerVision, 103TC kept running hotter, but the fuel economy did go up. Decided to try writing a tune myself after doing tons of research on Twin Cams & air cooled engines in general (think Porsche). Found that air cooled engines run best with an 11.5:1 to 12.5:1 air/fuel ratio. I used what I thought was the best map for my 103 & scaled the map until I got a 12.1:1 high & a 11.7:1 low AFR. My bike now runs 230*F +or- a few degrees depending on the outside temp. When I twist the throttle my StepUp seat collapses underneath me, & my 103 has no problem keeping up with my cousins stock M8 Low Rider S114. I'm still considering taking it to a dyno, but for now I like how it's running.

[@DKCustomProducts]

Cool! Sounds like you got it dialed in. Now that you have a good base map, have you tried Autotune using it?

[@Heavy69Metal]

I have an M8 131 my dyno tune by Harley Davidson dealership was 14.5 14.6 14.7 nothing below this and bike runs up to 360 plus degrees now a gain temp of 22 plus degrees vs untuned M8 Stock Tune

[@nhzxboi]

AT does replace the AFR given wide band O2s are part of the auto tune but I don't think it changes a thing in terms of spark or many other parameters. It is great as you say if you have the base map that someone knowledgeable built for whatever configuration your bike is in. However, in a practical sense, if everyone that needs a tune buys wide-band auto-tune kit, the world will be flooded with one-time use equipment. It's like everyone on a block with 20 square feet of grass to mow owning a lawn mower. With respect to making the most use of equipment, the professional tuner still makes sense whether they have a mechanical dynamometer or not.

[@DKCustomProducts]

There is still definitely a place for good Dyno Tuners, and there are some that prefer to do things themselves, as long as a good tune is on the bike, that is what matters. Here is another video on Auto Tune that you may find interesting - kzbin.info/www/bejne/p4eoma2LZdiAj6c Thanks for commenting! 👍 MB

[@RookieRay]

Thanks for this video and the m8 not lean from factory video. Can you do a similar video what happens when a full exhaust goes on a stock m8? Similar to the air cleaner video

[@DKCustomProducts]

Glad you liked the video. We have tested (but did not video) the 2017-2020 M8's, they are good with an open exhaust system, just like the air cleaner. We are going to be doing more dyno work in a couple of months, and we will document it at that time.

[@thejerseyj9422]

"The bike should be tuned for the way you ride". Absolutely, how many of us run wide open all the time ? Thanks for the info about the Target Tune, I'll have to look into that.

[@DKCustomProducts]

Glad you found it useful. Thank you for the comment. More info on the TT here- www.dkcustomproducts.com/dynojet-target-tune-for-the-power-vision-harley-efi-tuner-dk-pv-tt.htm

[@darwinandoe1003]

Very informative video. Felt as if your were talking directly to me. I have a 2016 Triglide that had Power Vision installed and Dyno Tuned when I purchased it. Since than I have about 100K on it and have always been concerned about my poor mileage (25-27 mpg) when I ride over 70 mph (2800 rpm +). I have been reluctant (read afraid) to utilize the AutoTune feature for fear of messing up the setting from my Dyno Tune. I like the idea of using the AutoTune to fine tune my settings. Also, my style of riding has changed. Before riding with a club I was always “full throttle “ trying to keep up with the group. Now the majority of my riding is long multi-day trips by myself. I am going to watch your other videos and many self perform an “Auto Tune” using my Power Vision. Thanks again.

[@DKCustomProducts]

Thank you for the kind words, and glad you found the video useful. When you perform an autotune you will save it to a "slot". Make sure you save it to a different slot than the dyno tune you are currently running. That way you will not be overwriting the dyno tune you have and you can always go back to running it, if you do not like the way the bike performs with any of your autotunes. To put it another way, you will not mess up the settings from your Dyno Tune when you run an autotune. There are 6 slots to save different tunes in. Just do not save any autotunes to the slot that your Dyno Tune is in...then you will always have it.

[@darwinandoe1003]

@@DKCustomProducts Excellent. Thank you for the response. That is what I will do. I am planning on going on a ride next Tuesday through Death Valley to give myself as many different riding conditions (heat, hills, straight a ways) as possible for the area I live in. Lol I really appreciate the advice about riding the way I normally ride, not trying to ride as what I think a Dyno Tune would do.

[@DKCustomProducts]

@@darwinandoe1003 Cool, sounds like a plan. One thing I like to do is around 30 minutes riding in autotune...then save it and ride with it to see if it is better. If it is, then use that as a base for another 30 minutes of riding, and so on. Do that 3-5 times. That way you can cover all types of riding conditions, and you are building each tune a little better than the previous. Also,, when riding in autotune, the PV is putting the entire rpm/load range in closed loop, so it is not running at it's best while IN autotune...so once you get a certain riding condition dialed in, better to take it out of autotune until you are ready for a new autotune in a different riding condition. Have fun on your DV ride!

[@darwinandoe1003]

@@DKCustomProducts Perfect!! I cannot thank you enough. This is going to be so helpful. It is depressing that I have had an after market device on my Triglide for over 5 years that I haven’t used to further dial in engine performance to my specific needs. I am one of those that looked at the Dyno as the end all final decision without factoring in what effect engine wear and tear, climate, gasoline octane, elevation, etc. would have. I have already went in and adjusted my speedometer reading back to what it should be. It has been off about 10 mph at higher speeds for years.

[@DKCustomProducts]

@@darwinandoe1003 Good deal. Some folks have different tunes for summer and winter. Different tunes for highway cruising, vs hitting it in the twistys. Lots of options!

[@ronlynch7744]

Great tune talk guys. 😎👍🇨🇦

[@DKCustomProducts]

Thank you! Glad you enjoyed.

[@KelvinWeiss-yv2zh]

Excellent video!!

[@DKCustomProducts]

Thank you very much! 👍

[@ut1004bp]

Well I was hoping to hear some comparative info regarding use of wide band CO2 sensors vs narrow band with base, custom tunes and autotuning but I only heard oneve, wideband sensor mentioned with Target Tune only

[@DKCustomProducts]

Good point! I did talk about it, but completely left our mentioning that a good base tune employs the use of wide band sensors...Starting at around the 8:20 mark, that is what I am talking about. Also, the video linked below shows how the ECM as LTFT or Adaptive Fuel that enables the auto-tune with narrow band also make changes to the open loop part of the tune. kzbin.info/www/bejne/ZqfFhZ6Iq6uUbpI

[@jordantserghanos2604]

Dynojet power vision only adjusts the VE tables. It doesn't automatically adjust timing and other settings that can make a tune better. So, yes it can do some adjustments but all the items that truly needs to be looked at or adjustments

[@DKCustomProducts]

I think you meant to say that the Power Vision Autotune feature only adjusts the VE tables. The Power Vision can log and adjust every aspect of the tune, including timing. KP

[@jordantserghanos2604]

@@DKCustomProducts Yes it can log every aspect, but it can't do anything with it. You need someone who understands what is being logged and knows how to make the changes needed based on those logs. It is NOT automatic! It takes a knowledgeable person to work with the data. I have a Power Vision with Target tune

[@DKCustomProducts]

Yes, one does need to do some studying to know what to do with the logs....or have someone with experience use the data to fine tune it. For OEM and Stage I bikes, they will do just fine with the basic autotune. It is when you are getting into Stage II and up that it needs more than the basic autotune. Target Tune is definitely the bomb. I have it on one of my Sportsters. The benefit was dramatic. 👍😎👍 KP

[@kerrylewis2581]

I can confirm your opinion of a poor, good, and great dyno tune. The first tune I got on my 2013 FLHTK was done by the HD dealer (when they were allowed) and it was poor. My second tune was again done at the dealer by a different person on the same equipment and while better I still felt it was not correct. I finally found a tuner who told me no charge if I wasn't happy. What a difference his tune made. The tune cost $450 and I had to wait almost two months for my appointment but it was worth it. The problem is it was extremely hard to find a guy this good and required lots of research. I 100% agree that the AT tune would have blown away the dealer's tune because they just did not have the skills needed.

[@DKCustomProducts]

Great example of how difficult it can be to get a great tune from a human. Glad you finally got one and your bike is running well. 👍 Thanks for the comment!

[@302roadking]

We gotta get you guys some chairs , great video!!

[@DKCustomProducts]

I thins we go rid of the squeak in the one work stool. lol Glad you liked the video!

[@toddgittins5692]

Great video.

[@DKCustomProducts]

Thanks man, appreciate that. 👍

[@chevyon37s]

Hell dyno tune your pickup truck too! My truck is an absolute pleasure to drive after being tuned!

[@DKCustomProducts]

Yeah, a good tune can make a big difference!

[@robertrosson1990]

Thanks for sharing.Truly some fantastic information.My uncle always told me if it's not broken don't fix it.Id love to have a tuner for my 05 Deuse but don't want to have a change reaction tuning one thing only to find out do that may effet other thing.having the EFI what would be the right tuner for my Deuse.I think it's probably best to pull the 5 speed and get a baker six speed Just to hopfuly bring the rpms down a little on the Hwy.Not sure if there's a such tuner for bikes before 2007 with EFI.Thanks for the input.

[@DKCustomProducts]

Thank you for the kind words. Yeah, if you're happy, why fix what isn't broken? Glad you liked the video, thank you for the comment! Yes, there are tuners for those earlier years, but they are not full featured like the PV or FP3. Give us a call or email if you decide you want one.

[@robertrosson1990]

@@DKCustomProducts I'll keep you in mind and I'll put it in a file on my phone and computer for use a little later.Thank so very much.Down here they hear the word Deuse and their response is wow have not seen the Deuse in a long time.Was offered 6k by the dealership.But I turned their offer down.Be hard to replace.Not to mention all the upgrades IV already done like a Sands cam plate and a high flow oil pump and a couple other thing.Have a wonderful weekend.Thank you again for having fantastic information.And my bike thanks you too.

[@DKCustomProducts]

@@robertrosson1990 Sounds like a good plan. Yeah, I hear ya on the Deuce. Can't tell you how many Harley guys I've talked to that have never heard of them...or argue with me and say there is no such Harley model. lol They made them for 7 years, and they are a sweet bike. Thanks for the encouragement on the videos, appreciate it.

[@WTDOOR63]

There is.. power commander V . I had one years ago on my ‘02 Road King classic. It performed great.

[@DKCustomProducts]

@@WTDOOR63 Thank you for your comment. Yes, the predecessor to the Power Vision was the Power Commander V and III, and there is also a Micro Tuner. All of these can give a great tune. They do not have as many bells and whistles as the PV, but they are what is available for the pre-delphi days.

[@jeffreyengle2762]

I got an FP3 and before I did an auto tune, I realized that I was so preoccupied with exactly how I was going to ride to give myself the best tune, but it actually didn’t make much sense for me to do that so I ended up just getting a canned map from V&H

[@DKCustomProducts]

If it is running respectably with the canned map, you can ride, as you normally do, with the autotune going and you will end up with an even better tune. And then you can autotune the new tune you have, that was a result of your previous autotune. You can do that as many times as you want, until you are not longer getting any improvement. The important thing is to forget that you are doing an autotune, so that it is able to improve based on your riding style and conditions. Many folks do this and end up with a "Summer Tune" and a "Winter Tune" because there will be differences in how it autotunes for different fuel and riding conditions.

[@jeffreyengle2762]

@@DKCustomProducts I was under the assumption that you could only auto-tune from a blank slate? So if I’m hearing you correctly, we can actually auto-tune from a canned map? (Making the “canned map even better”or fine tuning it)That’s interesting.

[@DKCustomProducts]

Yes, you can autotune any tune. I generally start with a canned map, then save the autotune. That is my new base tune, and then I autotune that and save it. I keep going until the autotune is no longer making any improvement. Sometimes it is a cycle of 4-5 autotunes, and sometimes as much as 15.

[@jeanpaullavieille5806]

Let's talk about efi older bikes and pv please what do you get out of it

[@DKCustomProducts]

You can disable the o2 sensor input on the Power Vision and still use it. However, since the o2 sensors are what provide feedback for the autotuning, it will not work. You could install 02 sensors, but then I believe you would need to swap out the ECM also. Another option is to get a tuner like the Power Commander. It is made to work on bikes without 02 sensors.

[@herbolmstead5938]

Great content as alway. I have zero experience with tuners but plan on using a fp3 on my 19 slim. My question with the auto tune is, some days I just putt around and some days I’m really wringing it out and some days are on the highway doing 70 to 80 for a couple hours. Do I just leave it in learn mode for days until I’ve covered the different types of riding or just try to hit them all in like a five hour ride? Or is it only capable of learning one? I know power vision with different maps is probably best but no way I’m going to have that big box on my bars and I don’t pre determine how I’m going to ride that day, it just happens the way it happens

[@DKCustomProducts]

Thanks, great to hear you're finding the videos useful. One thing I like to do is around 30 minutes riding in autotune...then save it and ride with it to see if it is better. If it is, then use that as a base for another 30 minutes of riding, and so on. Do that 3-5 times, or however many different riding styles you have...and until you are no longer getting any improvement after an autotune. That way you can cover all types of riding conditions, and you are building each tune a little better than the previous. Also,, when riding in autotune, the entire rpm/load range in closed loop, so it is not running at it's best while IN autotune...so once you get a certain riding condition dialed in, better to take it out of autotune until you are ready for a new autotune in a different riding condition.

[@herbolmstead5938]

@@DKCustomProducts Got cha! Thanks for that info! Going to be a big help ! Was holding off because I wasn’t sure how to do things and didn’t want to mess it all up

[@DKCustomProducts]

@@herbolmstead5938 No Prob. Glad to help. Always save your current tune...so if anything does not turn out how you like, you can always load the one you like better back in.

[@rodcameron5129]

Good info guys just out of interest sake are you guys using wideband sensors with your Auto Tune sessions

[@DKCustomProducts]

On bikes with the Power Vision and Target Tune option, yes, we are using wideband sensors. On bikes with the Power Vision only we are using the basic autotune, which utilized narrow band sensors. The exception to that is when we are on the dyno, even if we are using autotune basic, we are also using wideband sensors. When doing an autotune with narrow band sensors (mostly done while riding), it does affect the Adaptive Fuel Value, or Long Term Fuel Trim. So even the autotune using narrow band sensor (closed loop) has an effect on the open loop tables, making it run better in both closed and open loop. We talk about that in the video linked below, starting around the 11 minute mark. kzbin.info/www/bejne/ZqfFhZ6Iq6uUbpI

[@JCunningham21]

Dyno tunes are the same price as a Target Tune. $500. Just make sure you go to a known great tuner. Were the target tune shines is updates over time correct?

[@DKCustomProducts]

TT only costs one time, DT costs each time...and the biggest variable is finding a truly great tuner. Target Tune has nothing to do with updates over time. Go to this part of the video- kzbin.info/www/bejne/n6SleX5jf95qjc0 The Target Tune is constantly adjusting the tune as your ride. 100% of the time it is keeping the tune, dynamically, on Target. See more details on it at this link- www.dkcustomproducts.com/dynojet-target-tune-for-the-power-vision-harley-efi-tuner-dk-pv-tt.htm

[@streetglidescott6424]

Well done

[@DKCustomProducts]

👍

[@taps_1021]

Can't auto tune spark timing . . Yes in a stock bike it's will be ok. But when you're dealing with built engine it's a different ball game

[@DKCustomProducts]

That is absolutely correct about spark timing. Which is the reason that, as we emphasized in the video, you have to start with a Good base map prior to running Autotune, and of course you can manually log and adjust the timing yourself with the tuner. It is Also why we pointed out that on a Big Build, one that uses a lot of different parts, and on Stage IV builds, you probably cannot find a good base tune most of the time, so there will be a need to do one Great Dyno Tune to start out with. Stock, Stage I, II, III, this is not really an issue. Plenty of good base tunes to start from.

[@ericjames7680]

If you use just the Power Vision that you sell is this all that is needed to make the motor run cooler or do you need to do the wide band also? Is the narrow band good enough? I just want to Cruz on the weekends and not have the bike too hot. Also you say that I would need a good base tune but can I just use the Power Vision on the stock Harley and be OK?

[@DKCustomProducts]

A tuner is good for a max of 10-15 F drop in engine temps. This is good, but, typically, they need more cooling than that. Narrow Band is fine, that takes care of the closed loop, and the open loop via LTFT. Here is a video about how the ECM works and automatically adapts. kzbin.info/www/bejne/ZqfFhZ6Iq6uUbpI Also, here is a written report on cooling down the engine, it shows roughly how much each different mod cools down the engine- www.dkcustomproducts.com/why-how-to-cool-down-the-twin-cam-engine-part-i-dk-cl-tc-dn-1.htm And here is a link to a video series made from the above written report, where we go into even more detail- kzbin.info/aero/PLb3bvZgbH92_3s-2vv63QggFJ3nteFd_C

[@Old-n-slo-locked-n-leaned]

Are target tune and Thundermax similar in regards to how it dials in, using wide band sensors, to a target AFR?

[@DKCustomProducts]

We have stayed away from the Thundermax. I know a lot of folks like them, but there have just been too many problems with them (for some people) for us to even go down that road.

[@kriskleitsch9173]

I agree with DK, on this one. I have many gripes with T-max. (The product, not the people.) My two biggest complaints probably are: 1) The software layout is a mess. Making manual adjustments is incredibly time consuming. 2) The system is too smart.

[@younonguyen5183]

I’m in a predicament. I’m thinking of getting the Screamin’ Eagle Pro Street Tuner and the Screamin' Eagle Tuner Cable Kit to keep my 5 year warranty and so I can auto tune the bike myself while saving $350+ from getting it Dyno’d. The service department recommended me not to do it cause I can screw up my bike and get into an accident. Do you know anything about their products? I plan on getting your 587 air cleaner and I have installed really short straight exhaust pipes. Harley said for $120 they can download a base map for the time being untill I’m ready to get it dyno tune. Any advice is appreciated. Thankyou.

[@DKCustomProducts]

I recommend reading the report linked below (and watching the video in the report) and deciding what you really want to accomplish, now, and long term. Then make your decisions accordingly. Not sure what they mean about screwing up your bike and getting into an accident. www.dkcustomproducts.com/overview-of-efi-optionsxied-piggy-back-flash-tuners-dyno-ov-efi-opt.htm

[@Heavy69Metal]

Can you use Power Vision auto tune with SE Smart Tuner Pro 02 censor’s?

[@DKCustomProducts]

The SE Smart Tuner Pro 02 uses wideband sensors, and the autotune that comes with the Power Vision uses narrow band sensors. They are not compatible. IF you get a Power Vision with Target Tune, that uses the wide band sensors...and those sensors come with the Target Tune, which you can see here- www.dkcustomproducts.com/dynojet-target-tune-for-the-power-vision-harley-efi-tuner-dk-pv-tt.htm

[@aaroncox3340]

Thanks guys, awesome. I've got a 2021 ultra, I'm running Rhinehart 4"5 slip on pipes with the stock airfilter, BUT, I have a extreme flow filter to place on. I know the M8's don't come lean from factory. Have you guys played with a 21 model yet?? Loved to know your thoughts.

[@DKCustomProducts]

I wish we could help with the 2021 right now regarding tunes. We have Not done any tuning analysis on them yet, so cannot say for sure. the 2017-2020 are good, as you can see in the video and comments linked below. But with HD having made changes to the ECM on the 2021's, we are still waiting for the aftermarket tuners to be available for them. Hopefully soon we will have some info. kzbin.info/www/bejne/l4i6XqGqbJKZsKM

[@paulhood7316]

The only people that have the 2021s figured out right now are TTS and Techno research....for whatever reason Dynojet is taking their time .... No one ...and I mean NO ONE ...saw the ecm change coming.... additionally .... the 2020 RDRS equipped bikes have a COMPLETE different mapping strategy than their non RDRS counterparts . My own personal bike when watching it with Digital Tech ( RDRS equipped 2020 Roadglide ) commands lean fuel strategies and wherein the SE pro street tuner allowed

[@paulhood7316]

For some tweaking without the dyno or with the dyno at idle etc..... not so with the RDRS bikes .... commanding lean in all parameters .... now I don't know if I can mention other companies BUT ....Jamie at Fuel Moto has the RDRS strategies figured out and also Mike Vanorden at Moonshine HD and its very much more complicated than turning off the Traction Control.... these guys are on top of the Torque Table strategies employed by RDRS bikes to make great power AND keep the RDRS functionality..... We don't dyno tune anything .....we do check and correct calibrations for people when asked

[@aaroncox3340]

Hi Paul, thanks very much for that information. I'm thinking I may give one of them a call, I'm in New Zealand, and currently in lock down for the outbreak of covid, .....awesome...not. I have a Powervision from my 2019 sport glide, but can't really do anything with it at the moment. Maybe there's, potentially something I can do ? If I call one of these individuals. Worth a shot ? Again, thank you.

[@DKCustomProducts]

@@paulhood7316 Thank you for all the info.

[@jeanpaullavieille5806]

No one ever mentioned out o tune dose not work on a 03 because you don't have 02 sensors

[@DKCustomProducts]

Prior to 2006 on Dyna's and 2007 on other models, HD was only fooling around with EFI. They used a couple of EFI systems, some with and some without o2 sensors. It was a very small % of the total pre-2006 bikes that had EFI. More details at this link- www.dkcustomproducts.com/dynojet-power-vision-flash-tuner-w-auto-tune-dk-pv-cmp-pkg.htm You might also find this video useful/interesting- kzbin.info/www/bejne/ZqfFhZ6Iq6uUbpI

[@rtkl13]

I can't even get a base map for my 21 lowrider S stage 2 because I live in Comifornia

[@DKCustomProducts]

Maybe you have a friend in a free State?

[@rtkl13]

@DKCustomProducts well you know the game...hopefully I'll be out of here this summer. Thanks for your response

[@DKCustomProducts]

@@rtkl13 Thanks for watching!

[@jerryborsato6828]

Guess xied’s aren’t an option although you recommend them.

[@DKCustomProducts]

The XIED's and VIED's are a great option for stock and Stage I Sportsters and Twin Cams. Big Bang for the Buck. www.dkcustomproducts.com/xied-vied-fuel-management-c121.htm kzbin.info/www/bejne/nYDIe2mDrcSgh9E

[@craigwillams8327]

How about finding a dyno big enough for a trike

[@DKCustomProducts]

That would be nice. We have looked in our area for one, but no such luck. When we do you will certainly know. Thank you for commenting! 👍 MB

[@roncoburn7771]

how do you think a target tune with a big bore m8 would work

[@DKCustomProducts]

Target Tune is the bomb. You start with a good base map, set your desired AFR, and the TT will keep it there.

[@thejackgraves13]

Auto Tune and my Powervision is definitely a Winning Combination

[@DKCustomProducts]

Good to hear you have things dialed in. 👍

[@DSLKSL]

Do you still need to auto tune if you have a Target Tune?

[@DKCustomProducts]

You do not need to, it is constantly reading input from all the sensors (see video below) and adjusting. That said, you can run autotune with the Target Tune if you wish to. kzbin.info/www/bejne/ZqfFhZ6Iq6uUbpI

[@ironpug42]

All a Dyno does is read AFR a wide band 02 sensor and gives power out put A Dyno doesn't tell you what the AFR is or what the timing should be set at wont tell if the head temp.is too high or a safe exhaust temp.all it tells you is a wide open run.I put a Thunder Max tuner on mine problem solved.I had mine Dyno tuned once and what a waste of money.

[@DKCustomProducts]

While we agree that most dyno runs are done at WOT, they do not have to be. We do pulls on the dyno quite regularly at various partial throttle settings. We also are constantly monitoring engine temps and timing when on the dyno. They dyno definitely is a powerful tool for optimizing the timing at ALL throttle positions and loads. All that said, once there is a good base tune, then using auto-tune on the Power Vision, or Target Tune...both are better than most dyno tunes.

[@bajarvcouple]

Sounds like “Auto Tune” is the dynamic way to go.

[@DKCustomProducts]

Truly Dynamic is the PV with the Target Tune. The autotune is more of a snapshot (and you can do multiple snapshots and merge them) than it is dynamic.

[@GeemailMailboxx]

Singers use Autotune to sing better, bikers use Autotune to make their bikes engine sing with more power. 🤫🏍💨

[@DKCustomProducts]

🙂😂👍

[@kriskleitsch9173]

Auto tune doesn’t make a singer sing better. It just hides the fact that they can’t sing. Motorcycle auto tuners basically do the same thing.

[@cameroncunningham687]

A canned map was created by somebody on a dyno….

[@DKCustomProducts]

Absolutely...that is what we say right here- kzbin.info/www/bejne/n6SleX5jf95qjc0 👍😎👍

[@UsetoCud]

Please get mics because your sound is awful

[@DKCustomProducts]

Believe it or not, it is much better than it used to be. We are still working on improving the sound quality.

[@mdfurr]

@@DKCustomProducts Glad to HEAR that!

[@kevingleason5434]

Great video.

[@DKCustomProducts]

Thanks man. Appreciate the email and your kind words.