TESTED: NEW EC Tuner Brake

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Many of you in the Precision Rifle community have seen the new Patent Pending EC Tuner Brake from Erik Cortina, and have probably been thinking: "Does it work?". In this video, we'll find out by testing the EC Tuner Brake with three different rifles, with factory ammunition, and with handloaded ammunition.
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The following Ultimate Reloader partners are featured in this video:
- Erik Cortina (product supplied for this video and article)
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[@scarecrow6292]

If you put gorilla tape on the back of your target it holds the paper together really well and you can get a better idea of the group size without the tearing of the paper.

[@TheMerlinmk19]

Amen. I thought I was the only OCD guy doing that lol. Now I have a shotmarker on order.

[@Hummingbyrd99]

Woah definitely trying this!

[@rwmagnus]

Great idea, hadn’t thought of that. Definitely worth a try.

[@jacobw.2279]

I like using the blue shop towels for this reason. Comes in a big roll of cheap durable targets.

[@TomTom-tg2cb]

Were do you stick the gorilla ?

[@rom14141]

"Keep'em centered!" EC

[@ianfarquharson3772]

I'm just glad Eric's dedication and hard work is finally getting shown to more people. This whole system has come from his many year's of precision shooting into his own workshop that was specifically built to build something like this.ThankQ.TkEZ>UK

[@TheClandestineArmory]

It’s a redesign of brownings BOSS is all this is.

[@Mattytube18]

I like your partner’s idea for swapping, taking notes and repeatability.

[@kirkmartin2223]

"The difference between science and screwing around....is writing stuff down"

[@mrtdiver]

It really would of made the study that much more reliable. I hope they try this.

[@ertatta]

I can almost guarantee that if this is taken off and reinstalled, that the tuning will change. I wouldn’t see this as the tuner/brakes’s fault though.

[@danpollard4210]

Me too.

[@Walleye_Warrior]

I have the EC tuner brake on my 6.5 RPR Creedmore, first thing I noticed, the muzzle jump was gone, and within a few minutes I was shooting 1 hole groups, so I ordered a 2nd EC tuner for my 300 PRC RPR,

[@dirklabuschagne473]

Have you shot it on the 300PRC? Recoil reduction good?

[@Walleye_Warrior]

@@dirklabuschagne473 I have shot it on my RPR, which comes with a huge brake from factory, the EC tuner works great to tune, with just slightly more recoil

[@forrestwaldeck9803]

What tune number is yours set on

[@Walleye_Warrior]

@@forrestwaldeck9803 on the 6.5. I find either 4 or 6 depending on my load

[@weloveups831]

Only thing missing for me is. They did not show, does that setting repeatable. One group doesn't seal the deal! They speak of it at the end. Is there a follow up video.

[@samclements3692]

A great tuner brake by a top class guy. 👍

[@fourtenfifty]

I have Erik's EC TUNER on my 6.5X47 Lapua and cut my group size in half down to .31" shooting 140 Berger Hybrid. Then put it on my .224 Valkyre and again my group size was reduced to .30" shooting 80.5 Berger fullbore target. Reminded me of my old Browning BOSS tuner from many years ago. Thank you Erik!

[@pstewart5443]

I have two of these and I love it when the rifle goes into tune. It doesn't make a sound when firing. When it's out of tune it's like a tuning fork going off every shot. This brake basically takes out the need to move the bullet in and out to find the seating depth the rifle likes. You can make it even smaller a group by adding that in, but really 0.2 is fine for PRS. I have had no issues with repeatability. Erik stands by his product and at F-Class and PRS matches I see a ton of EC tuners, because he makes other styles and calibers.

[@HighGear39]

I'm curious about conistancy. Maybe firing 3 groups per setting then averaging them. That way you don't get one crazy good group skewing your conclusions.

[@robwebster2562]

Bought one of these for my .338LM. Worked amazing, love it. Loved it so much I just ordered another one for my 6.5CM. And I can't wait to see how much it changes things on an already great shooting rifle.

[@joejr9653]

Great idea about taking it off and putting back on to see if results stay true.

[@karlcapobianco8121]

What happens when you take your scope off and Remount it? What happens when you secure your stock screws

[@TheMerlinmk19]

I have it (in polished stainless and would rather have black) and I ran a very comprehensive test. There is no doubt that it works exactly as advertised and designed. My range was from around 3/4 moa to inside 1/4 going through the settings. My sweet spot is at "4" and it's good still at just past 3 and just short of 5.

[@laszlovandor4770]

Eric Cortina is a no nonsense kind of guy. Definitely buying it.

[@johanswart8116]

Maybe take a factory rifle with factory bullets and test it.

[@treece1]

He didn't even place in top ten at national s did he. 2021?

[@ValcoBayrunner]

@@treece1 maybe he doesn't get enough range time, he's a business owner

[@len5019]

I would be interested in seeing the additional three or five-shot groups to see if the results are actually consistent and remain improved over time.

[@joshuagibson2520]

Bingo.

[@joshuagibson2520]

Also wonder if it's repeatable. Could you get it dialed, go back a bit, end on your number, and have the same POI / Group.

[@bartleyboy4]

Statistics of distribution do not favor barrel tuners. Two 30 shot groups, one without tuner and 1 with the tuner in a “node” could tell us definitively if the tuner works, but I’ve never seen this done.

[@mikespak1473]

you really need to confirm those results with more than a single group

[@Mykaelous]

Yeah a 3 shot group only gives a 20% confidence interval for being within standard deviation interval.

[@toddfez67]

I had a 6.8 SD but a.67" group. Added the EC-TUNER and got to setting "6"! One fricking hole! 😎

[@daviddkirkwood2010]

That is exactly what mine did, 6 was a one hole group. 6 Creedmoor.

[@TheMerlinmk19]

Yessir, same experience I had...love it!

[@wvlongshooter3912]

I put this ec tuner brake on a rifle that shoots amazing. I just wanted to c if I could get rid of an occasional flyer when using a bullet that actually needed a faster twist barrel. After adjusting the tuner I have completely eliminated the flyer issue. I’m very impressed with this product!!! I’ve put off getting a barrel with a faster twist.

[@troymorrison9921]

I started reloading this year and I have an EC tuner break on my 300 wm. The best I could get my reloads was a half inch group but by using the EC tuner I’m now shooting 1/4 inch groups. With factory ammo my gun will shoot 1 inch groups but the EC tuner will help me get them under a 1/2 inch groups. My rifle is a Christensen arms ridgeline. I have also changed the stock. With the stock change and the tuner break it kicks less than my 7mm-08. I enjoy watching your videos because you are very informative. Please keep up the good work.

[@Dwayne7834]

Good video and information. Been thinking about getting a tuner.

[@careyemory7757]

Gavin i have the original Ec Tuner on my custom 6xc just like everybody i was a little skeptical to but had the gunsmith install it on a Bartlien heavy varmint on a Defiant action. All i can say is this gun is a tack drive went through some test and settled on number eight, shot a five shot group at 100 yards just under 1/4 inch group, did this test a couple more times same results, it’s made me a believer.

[@drone4higher]

Gavin the EC TB works very well

[@Boncella1]

I picked one up a while ago and it works wonders on my rifles! It saves me a lot of time and money so I don't have to play around with bullet seating depth especially when getting components are hit and miss.

[@mikewaite5849]

I bought a EC Tuner for my Remington 700-7mm REM Mag elk hunting rifle. My results were definitely similar to yours. My three shot groups went from .815 @ 100 yds to .279” @ 100 yds. I did have a setting where my groups opened up to over 1” (1.40”) then back to my best grouping. As a side note I was using IMR-4831 powder and Nosler 160 gr Accubond bullets.

[@egouldE5]

Erik’s tuner works great.

[@SnipeU696]

This is the interesting and fun part of marksmenship. Thank you.

[@fwod1867]

Good series with the two guys 👍 Gavin get's help from Travis 😁

[@danielbuss8788]

Thanks for the review. Gota get one!

[@TommyV8541]

Great review!

[@heinrichstoltz1356]

Thanks for a very interesting and practical experiment. Currently there is not a temperamental rifle in my safe, however if I do have issues the EC Tuner will be part of my solution.

[@jamesarriola3700]

Bought an EC tunner for my 6.5 cm. My biggest surprise was reduction in recoil. I was surprised it has less recoil than my suppressor ( Gemtech 300 win mag). My last 3 shot group was .218

[@D70340]

LOL, well, it is a muzzle brake.

[@DanielBoone337]

I'm liking it definitely going to be picking one up soon!!!

[@ElmoColt45]

Gavin, I have used the EC Tuner on my 6XC and my 6.5x47 Lapua, it works, it really works. these were two different EC Tuners.

[@johntaylor2840]

WORTH IT'S WEIGHT IN GOLD! I threw it on did some load work up found a good load 144 Berger and H4350 SD of 2.4 on my magneto speed. Loaded up 30 rounds took the magneto speed off and started fine tuning.3 shot groups starting at 1 to 8. Found it grouped well at 4 and 5. So I split the difference and wow! 5 shot group @.18 inches and .22 inches. Absolutely amazing product.

[@jamesknightly7033]

Would love to hear a follow up regarding removing it and demonstrating repeatability!

[@paullavallee1631]

My first example of a barrel tuner was a model 70 Winchester with a boss system, once adjusted it was amazing how much effect it had on group size with factory ammunition

[@tonydevich7937]

Good information

[@TexasTrained]

Gotta get one.Been waiting on EC to get his new Mill all lined out

[@ncwg2boatguy]

Another killer aspect of tuner is if you run data in temp changes and record it, you can tune load in colder/warmer weather. I run a 6.5 Lapua for PRS and it works. Without having 2 different loads.

[@tommysmith8801]

I dont have one yet. And was wondering if that could be tested. Awesome info.

[@patfarrell6069]

I have his EC Tuner Break in 308 and 6.5. shot a 3 shot 308 group tuned to #7 on the break.... Hole diameter was .398 on the target. Still working load data for the 6.5. Love the breaks

[@billy19461]

Love your videos!

[@mattchilders3123]

Exellent vid Gavin.

[@johndelacruise2110]

You just got a new subscriber mate!

[@drubradley8821]

Really interesting. This subject matter has been of many topics on several LIVE show, using a "barrel tuner or not"... And it really is interesting to see so many other there building a general census for the Pro's & Con's of this. Also worth mentioning, many of these folks that are already going on with this adventure of experimenting with a barrel tuner, of various brands and types, it will be crazy interesting to see the various calibers. Something so simple, yet, exceptionally complicated. These kinda remind me of the sky-scraper tuned dampers. (the multi-ton chunk of steel at the very top of the sky scraper to calm the swaying down), yet, it is just a chunk of heavy mass, hanging from cables, all the while ever so delicately balanced or tuned to the buildings harmonics.. I look forward to trying one in the future. I am a bit away's from trying one just yet, as my skill set is still too messy, to be able to notice a difference, as per, is the P.O.I. me, or the rifle system or weather, etc.... Soon though. that will be fun to play with a few of these various types of anti-harmonic / damper units.. Thank you for showing the graphs, I enjoy that seeing that kinda stuff, it helps my mind understand further what you are saying in a 2D format.. Thank you.

[@kenshaw338]

My buddy has a tuner on his 37xc as well as a terminator muzzle brake! They absolutely positively do work , I’ve seen it first hand…

[@robertlunnar8260]

Cool info

[@brentrasmussen2440]

Would love to see you do the tuner adjustment as shown. Then shoot a 20 shot group with the best and worst settings. Also, as others have said step back through the adjustment a 2nd time and see if you land on the same settings for best and worst groups.

[@GeorgeLapan]

Have a 7PRC will be installing a EC tuner brake!...I will send you my results when I have them...Good stuff guys thank you

[@patrickflynn6704]

Great video guys the EC tuner brake sounds like a good idea and I think I'll give it a try one thing though you never mentioned how well it helps on recoil and if I'm not mistaken you use it only on a Mac grade barrel well how well will it work on a factory barrel would be nice to know and see the results well keep testing hope everything goes well and everything stays in the bullseye I like all your videos good going thank you for information that I might be able to use

[@cameronsouth1259]

Yes, I use the EC tuner with a 6.5 PRC currently worthing with a load. The rifle is a new MPA with factory match bullets it shot well 1/2 with the turner .119.

[@lancewatkins6369]

Use the tuner brake on my prs 22 br. 95 gr smk, h4350. Last group on paper was measured at .281-.224=.057 for 5 shots. Consistently shoots from .2-.0. Best shooting equipment I've bought!

[@bobbycarmichael7860]

I have the 30cal brake i swap on 6cm 6.5cm and 6.5-300bee. Set to original settings and it stays true. Takes half of the work out of load development. Erik makes an amazing product.

[@bernardcochran9709]

I was wondering if the 30 cal brake would be effective on lower caliber rounds, that is how well it would work to reduce recoil and tune .280 and .270 cal rifles. Sounds like it works on your rifles.

[@saleen308]

I have a EC tuner on my Vudoo. So worth the money.

[@twoskeptics]

Years ago I HAD 3 Winchester Boss System rifles, 243, 300 Win, 7mm mag. Each shoot 1/3 MOA. Sold them along the way..... About time someone came out with a Boss style system. I'll buy a few dozen.

[@michaeldunn150]

i like to see if it is repeatable and accurate every time you take it off and back on the rifle..... great vid you guys!

[@saltcreekammo]

Easiest thing to do would be to have a tuner for each rifle. But, I like the repeatability idea for those on a budget and want, or are limited to, that capability. I'm a fan of Erik and have learned a lot from his channel.

[@brandonhouston3683]

He's got a lot going right now and yes I've learned alot from him to very smart man

[@USAACbrat]

I bought one, for my 300 BO with a 16"BBL. on a Unitau Precision Upper. it hates boat tail bullets. With 168 gr A Max. Just the break cut the groups in half with no adjustment.

[@swamper2fly]

Seeing some grouping with in and out adjustment would be nice

[@jtgraphicsprinting3310]

I have an EC TUNER PN A 40 cal muzzleloader. It truly does make a difference!

[@shauntucker5145]

I'd very much like to know the repeatability. as I have and mostly use a supressor and want to get this for some club matches. the idea of being able to remove and replace without reworking up loads is very appealing so repeatability is key to me wanting it

[@TheMark9013]

Picked up a browning gold med it had a tuner on it never seen one before kinda neat.

[@user-yz9dg1fe3l]

Around the 12 minute mark I really liked your questions, is there a part two to this video where you guys test repeatability and such?

[@bernardcochran9709]

This sounds like the product I may need. I had a load that consistently shot .5” inch groups at 100 yards with single digit ES/SD. Shot a 4” six shot group at 995 yards with that load. Then I ran out of powder and switched to a different lot of the same powder. For reasons I’m still scratching my head trying to figure out why the groups went to crap. I would have three touching and two fliers high and low. However, the velocity node stay the same with single digit ES/SD at the same charge weight. The velocity did drop approximately 50 fps though. I also developed a load for a couple 308 rifles that have BDC reticles, is gas operated and the other is bolt action. The load I’ve developed runs identical ES/SD in both rifle, low teen ES and single digit SD, and the ballistics match the BDC reticle. The bolt gun shoots a consistent .5” five touching group at 100 yards, but the gas gun shoots .8”. I imagine this brake may shrink those gas gun groups down some more.

[@GetMeThere1]

In one of his videos about seating depth Eric himself says that you can tune "any load" just by adjusting seating depth. IOW, according to him, changing seating depth changes harmonics in a manner similar to a tuner.

[@tonycking0121]

Remember the boss system on Browning and Winchester rifles in the 90s it too was adjustable

[@rogerboucher9132]

I had a 22-250 with the Boss and within 20 rounds I had less then a 1/2 inch group at 200 yards. If this is even close I want one

[@brendanheymans3324]

I still have my model 70 sporter boss in 3006

[@zodelune8763]

We have the BOSS on a Model 70 in .270 and another on an A-Bolt Eclipse Varmint in .308, I don't know why they stopped producing them as they really work well.

[@jesusisalive3227]

I owned a Browning A bolt in 300 win magvwith the Boss system. It was awesome!

[@PHILSHOE81]

The browning Boss is just like the break. I have it on my a bolt 2 medallion 280 rem. It really works

[@justinvandee2008]

I knew I should of got on the black tuner list few months ago. Load work is done and want to see if I can get into 0.1

[@rodgerkunkle1847]

Just bought an EC tuner brake. I’m having it installed now. Can’t wait to try it out. My best 5 shot group from my .308 is .478 with Federal premium 168 BTHP. This video has me really excited to see how much tighter my groups can get.

[@BLUELEADER78]

Have you had a chance to test it?

[@rodgerkunkle1847]

@@BLUELEADER78 I did a lot of shooting and testing this month. The EC Tuner brake did a fantastic job. I did most of my testing with Federal premium 175 bthp ammo. I did some testing with 168 and was able to tighten the groups down to .365 for a five-shot group. I ran out of 168 and switched to 175 BTHP. Before the EC brake my rifle would shoot the 175 in the 3/4 moa range very consistently. I started firing 2 shot groups at 0 going in increments of 2. At setting 2 they were touching but I continued on all the way back to 0 being 10. Setting 2 and 8 were both touching. 8 was very slightly tighter. I dropped back to 7 and went in half step adjustments. At 7 it had opened up to about 1/2", 7.5 was about the same, skipped 8, 8.5 was almost 1 hole but I could see it was 2 shots. Setting 9 was 1 hole, I couldn't tell through my spotting scope that 2 shots were there. I sent 3 more making it a 5 shot group. Subtracting the .308 for the bullet diameter the group measured .210. Thats a .518 hole with a .308! Wow, factory Remington 700 PSS .308 26" 1:12 twist with a Timney trigger and an EC Tuner brake is shooting factory ammo sub 1/4 moa !! Will it do it every day, probably not but that remains to be seen. I can say that I am a 100 percent believer in the EC Tuner brake.

[@tonydevich7937]

Good job guys sounds like you have a method

[@davegreenleaf5272]

When taking it off and putting it back on i would try and use a crows foot on a torque wrench to make sure the tightness to the muzzle is the same to remove another value from testing.

[@endutubecensorship]

Bingo! Any ideas on how to ensure consistent timing?

[@oif3vetk9]

Have one sitting on the shelf right now. Going to try it on my 6mm arc when I finally get the upper. (Of course do a baseline test with original brake first.) Haven't heard of anyone trying them on gas guns. Guess there's only one way to find out.

[@DG-gc5gs]

One test I would like to see is to take the tuner out several rotations and see what happens if you go from zero to say 30. Is there more than one node that can be found and at what distance might that be?

[@mikeseigel6566]

Go to Erik’s site, he shows it. There will be several nodes found on running it out from zero.

[@davidbell1619]

I have 2 a 6.5 creed and a .308. THESE WORK!.

[@travisbickle0815]

Beautiful chassis 😍

[@brucelowell7506]

Yeah,I put a brake on a 25 WSSM AR.IT went from 1/2 “ groups to 1 1/2” or worse.Took the brake off,tightened up.So I have a EC TUNER brake on order .Hopefully it will not let me down

[@johnshipley9755]

Yes area 419 hellfire self timing muzzle system groups are a lot tighter shooting 338 300 grain bullet can't wait push this out pass a mile.

[@tomfrommichigan]

I watch Erik Corrina's KZbin channel. He's really funny. Plus, he has a lot of good advice for people who want to get into accurate rifles.

[@westernbinds6319]

I have a 308 that I hand load for and a 300 PRC that I do not have immediate plans to hand load for due to lack of component availability. My question is do you feel that this brake is potentially a money/ammo saver for dialing in factory loads?

[@highspeed9518]

its all about harmonics,always has been look at structured barrels if you can find that node its magic, but the ammo has to be consistent as well each round is throwing a frequency range, gotta stick with a load and run with it, you dont need anything fancy either simple washers/weights on the muzzle work

[@thaneforster3186]

G'day, Always good videos thank you. What is the science behind the tuner? Me and the Misses shoot competition light bench rest with a Lithgow LA101 22lr and a Tikka T1X 22lr. We have found that both these guns shoot best over 50 meters using CCI standard velocity rounds (40 grain at 1070fps). Would the tuner work with such low weight and low velocity? We're trying to find a way to get to the elusive 500 point scores. Currently we are stuck in the 480's.

[@tonyborck3169]

My Winchester 7mm rem mag came with a tuner brake back on the mid 90's

[@andrewadams9770]

This is the same concept as the BOSS system on the Win 70 and The Browning rifles. It works!

[@perdiehm]

What I would like to know is tuning for conditions. Say you go out in the morning and shoot. Then the weather conditions change effecting your load for afternoon shoot. Or a cold front moves through. Could you add settings to your dope for different conditions? And would they be repeatable enough to make it feasible?

[@CarlosMartinez-ok9hx]

Gavin, do you keep your Magnetospeed on just to determine MV at zero and take it off or do you tend to keep it on all the time? I would think once you have a good load you would use the MS just to get that MV for your ballistic solution so as not to affect harmonics. I haven't heard of a tuner but it sounds like a game changer!

[@simonstern4893]

Thanks guys good review it’s a relitively cheap add on for most shooters even here in Australia that can make a significant change in group sizes that are chasing that little bit more accurassy than the the next guy please excuse my spelling and like and enjoy your channel you have some good stuff here

[@mikewaite5849]

I used the 30 caliber EC Tuner Brake on my 700 Remington CDL 7mm Remington Magnum and the difference was worth every penny spent. Results on my hand loads- three shot groups starting 0.78” we shrunk to 0.19” which essentially was one button hole. Never look back!

[@johnknierim9017]

I have a 6 ARC 22” bbl in a gas gun, would be very interested in getting a break, like the one you guys tested. My bbl has a 5/8 thread like the 6.5 Grendel has also.

[@rustynut1967]

I have the same setup as you and just got the EC tuner brake but haven't tried it yet.

[@dobrzpe]

very cool product. unfortunately, my tuner is a suppressor. it only has 2 settings: on and off... i prefer the "on" option!

[@ZeeGerman36]

I ordered a stainless one for my 300PRC RPR but didn't get to install it yet. Then EC announced the black nitride ones so I got one of those for the RPR and the other is getting the ultimate harmonics test - an M1A in a M14.ca aluminum chassis.

[@mikejurisic]

I'm running a Howa 223 with a 26" IBI 1.25" straight profile barrel, would an EC Tuner Brake make any significant difference?

[@mikejoeinc.1478]

I just got mine today and installed it. Question do you work up a load and then start turning the tuner or grab any load

[@karlcapobianco8121]

I bought the EC TUNER IN 6.5 CREEDMOOR. Put it on my FRANCI momentum. Looks and works as designed. Next test I would like to see you do. Is Graphite or molly coated bullets. Does it increase speed? Does it extend the barrel life? Does it affect accuracy?

[@northstar6888]

Had something similar on my Browning Graywolf 30-06 Tunable break took alot of ammo to dial. It's for sale...

[@bzbcustoms4520]

Vary cool would love to try one on the 300prc

[@ChilangoDios333]

Me too. From what I have seen it has a good amount of recoil reduction for the 300mag type guns. Not as much as the fat bastard but comfortable enough.

[@claw1952]

Browning used to have what they called the B.O.S.S. It worked great. I have a Browning Abolt in 270 WSM with a Boss on it and will shoot sub moa all day long, once i got it fine tuned.

[@Notjay95]

For those weary of the tuner brake; buy one and install it as if it were a standard brake. Develop a load conventionally with a powder and seating depth node that shoots well. When you go to a match and your groups start opening up because of throat erosion or change in temperature/pressure, you can adjust your tuner on the fly as a backup. I think this thing can cut your load development time in half. It would be so nice to find a powder charge with low sd and then you could essentially finish your load development in 1 day at the range as opposed to making a bunch of trips back to your reloading bench

[@tommyj7087]

I may have missed it, but it would be nice to hear if the brake portion of the tuner brake is effective also. I am on the fence now and don't like the brake on my current setup. Keep the great videos coming.

[@Tfox31]

My feeling is as a brake it is very good.

[@Farmerboy78]

So I'm curious about this... is it possible to test where you find multiple nodes for a given load. To see if there is an impact change across the different nodes. To find the higher impacting node ( if possible) to be sure you have the node at the top of the harmonic wave.

[@macburgess6785]

I just got back from the range. I have the EC..2 tuner break, and it's amazing. I'm getting ready for hunting . I loaded with no load development. I used 40 guns of Varget, under a Berger 175 grn vld hunter. At setting 8 I got.25 inch group at 100. I tried 7 and it opened up to 3/8". I went to 8+ and it shrunk the group to 0.029 ,3 shot group. No load development. I'm good for in the bush where my longest shot will be just over 200 m over a pond.

[@tonydevich7937]

My 7prc loves the tuner