2020 STI Time for Stage 2! GrimmSpeed Subaru Shop Car EP.3 | Part 1

[@Smeedia]

What dyno was used? Number seem fairly high. Especially without fueling mods

[@GrimmSpeed]

JM uses a Dyno Dynamics setup. We talk a little bit more about the power figures at the end of the last episode if you want to check it out!

[@gavinbartsch8438]

How are the IDCs on that setup? With just a grimmspeed intake and boost controller I saw mine peak at 90-92%. Can’t imagine there is much fueling room adding a downpipe without injectors.

[@watch6058]

I have I'd 1050X and running about 54%% idc wot and only made 330 tq... And that was with a fuel pump... If stock injectors r 500 ish cc ya they r absolutely maxed I don't know how you would get close to 400 tq with out doing any fuel mods.

[@ryanarch7366]

Only thing I can think of is they did fueling mods off camera and didn’t mention it 🤷‍♂️

[@TheSupervang]

@@watch6058 stock injectors are like 565cc more than enough for sub 400 hp/tq

[@Phantaystic]

Devin was also my Tuner. Stage 1 Cobb Sf intake on 19 STI been over 10k miles and its still running healthy.

[@GrimmSpeed]

That's awesome, he's a wizard on the dyno!

[@BushidoPhoto]

I went from stage 1 to stage 3+ and love it! I definitely recommend installing an AOS and cylinder 4 cooling mod with bigger intercooler and radiator. Don't overheat and blow stuff up. :-)

[@paulmarsdensr1095]

Man I really love the way Grimmspeed designed all of these parts for our WRXs and STIs. Stay safe everyone.

[@GrimmSpeed]

Thank you very much Paul, all the effort is worth it with feedback like this!

[@santosb9442]

@@GrimmSpeed hello, if I install stage 2 how can I contact your tuner ?

[@JohnnyWishbone85]

You guys aren't the only company I use, but you are the one I like the most. Your products seem thoughtfully-conceived in a way that many other products just aren't.

[@GrimmSpeed]

That's really cool to hear, thank you for the support. We do put a lot of engineering time and effort towards our products and while they're not always the quickest to market, they're definitely among the best!

[@sunnydee7745]

Just got a 21 wrx sti about 4 months. Now I can't wait to get a stage 2 !

[@GrimmSpeed]

Congrats!

[@CRLAMB]

Really enjoyed the video and was surprised at the gains for minimal parts.

[@GrimmSpeed]

That's good to hear! Check out the second part we just dropped to see where we ended things for this episode.

[@charlieTesla]

Wow! Good numbers with a stock cat back!

[@GrimmSpeed]

We are plenty happy with the results!

[@marcelofernandoiii7561]

Nice upgrade! That downpipe look so good.

[@GrimmSpeed]

Thanks Marcelo, it's one of the pieces we're most proud to manufacture!

[@bonotoli]

Incredible video! Thanks for this quality content 👍

[@GrimmSpeed]

Thanks Connor, glad you're loving the series!

[@AutoEnthusiast]

Woah those are some wild results/numbers! Nice build though!

[@GrimmSpeed]

Feels like a whole different car, just wait until the exterior changes on part 2!

[@bbehzadi413]

Love this can’t wait to see more. Unfortunately I have another companies downpipe now seeing yours with the coating kinda wish I had gone with yours. Can’t wait to see the next episode of this build.

[@GrimmSpeed]

Thanks Bailey! Hey maybe you'll find the excuse to upgrade sometime. The next episode will be a fun one with some exterior stuff, hope you like it!

[@BradlehDadleh]

@@GrimmSpeed Does your downpipe cause a CEL for emissions on any of the 2015+ models?

[@GrimmSpeed]

@@BradlehDadleh you will get a CEL if you just throw it on and go, but we do recommend tuning for the DP so they will disable that code at the same time.

[@GR8GUY54]

@@GrimmSpeed So disabling the downpipe code is why Tuners are scared to tune us now?? This EPEEAYY stuff has them all messed up. Kinda wish I didn't buy this 21 STI now.

[@sebastiankulesza3782]

Great content!!!!!

[@GrimmSpeed]

Thanks!

[@Retr0_Grouchy]

Great numbers!

[@GrimmSpeed]

Definitely, that's why the Stage 2 Package is so popular!

[@shanekarmun8082]

Great video!

[@GrimmSpeed]

Thanks Shane! We actually JUST dropped part 2.

[@GrimmSpeed]

For those asking about fueling mods and power figures, I did get a chance to message back and forth with Devin (the tuner playing around with our STI) and he had some feedback that I would like to relay. First of all, JM uses a Dyno Dynamics setup which is synonymous with low readings so the result you end up with are the “uncorrected numbers” at the end of the session. These numbers aren’t what the typical enthusiast is used to seeing and are often called the “heartbreaker” figures. In order to equate it with what we would consider more standard DynoJet setup WHP figures, there is an equation to generate “corrected numbers”, these are what most shops report and they fall within 5% accuracy. This gets a little confusing in terms of where/how you’re pulling figures and the way they’re presented, a good rule of thumb is to focus on percentage gains on your specific setup rather than outright HP/TQ figures. What we present as power figures is our specific result at this tuning shop. As far as fueling goes, we were in fact on the factory pump/injectors at the Stage 2 level. According to Devin, Subaru made a change sometime in the 18+ STI that allows for more timing to be pulled (thus is less prone to knock) and also allows for more power to be made on standard pump gas (93 in this case). The downside he noted is that E85 doesn’t make as much of a power difference as in the older models. For our final numbers he was in 4th gear on the dyno at 95% IDC at 22PSI, typically they’ll cap the boost a few pounds down, but we were all also curious about what the newest STI could do without pushing beyond the limitations. Hopefully that sheds some light on your questions! -Art

[@santostuner]

the 2019-21 they have a Type RA engine in them with better supporting mods such as the better pistons then the generation in the 2015-2017 . Can't wait to add some grimmspeed mods to my 2020 model. so really nobody should be surprised this engine is really good and strong

[@GrimmSpeed]

@@santostuner Our tuner always raves about the 19+ STI because it is such a night and day difference between it and the earlier years, Subaru definitely gave us the best of the offering at the end of it's generational run. Much appreciated, thanks for all the support!

[@nigeljoycey5644]

Thats really good to know because I have a 2019 STi, just going for a pro tune tomorrow, installed your intake today, stoked. Subaru did really give the sti a proper send off with the last few years. They make more power, are more future proof and strangely my 19 liked the cobb ots map way more than my 2013 did. Probably because of the upgraded ecu I guess? Either way I'm hyped

[@TQSTEER_FNLEJ25]

why is your turbo/exhaust heat shield considered stage 3 to you? why not just put it on since your already there?

[@GrimmSpeed]

Hey AJ! The heatshield is grouped in with the Stage 3 Kit because the main part of that is the intercooler upgrade and it goes hand in hand with preventing heatsoak to the TMIC. We could have thrown it on in this video but since we'll be pulling the OE TMIC off in the next, we decided to stay true to how the packages are sold.

[@JunkWoodProjectswithJacob]

Would image these are crank hp numbers. Seem high for a stage 2 without fuel mods. Great content though 👍🏼

[@GrimmSpeed]

Check out the explanation we just posted as a comment above!

[@Bellside92]

So does adding the intake and Down pipe Max out the fuel injectors? That’s what others are saying.

[@TJShoop]

awesome content. that stock pitch stop mount should be illegal lol.

[@GrimmSpeed]

Thanks TJ! It's almost like they encourage you to ditch it with their design.

[@arnaldoaponte4482]

It must be nice just to walk around and pick stuff up...

[@GrimmSpeed]

Haha, its definitely a perk.

[@loganreynolds263]

Can you guys make a scientific video discussing harmonic dampening and the effects of lightweight crank pulleys sometime? Everyone bashes them and no one defends them.

[@GrimmSpeed]

Thats is a good idea. Ill run it by our engineering team and see if that is a possibility. -Clinton

[@seansigall7206]

These can not be WHP numbers. Those are extremely high without any fueling mods. Stage 3+ on an STI is usually around 300whp.

[@GrimmSpeed]

Check out the explanation we just posted as a comment above!

[@blk99xtreme]

Oh ya sure...that Top mount Intercooler sooo easy to "pop right out" ..lol...and 'pops right back in'.....lmao...NOTT

[@GrimmSpeed]

Getting the Intercooler back in place can be tricky for sure. You must have patience. That lower coupler gets me every time.

[@anff]

Subbed..

[@franciscosalgado333]

I really wished I knew that you guys would coat the dp before I ordered mine for my wrx.

[@GrimmSpeed]

Which generation of WRX do you have?

[@franciscosalgado333]

2017 WRX Premium

[@GrimmSpeed]

@@franciscosalgado333 Got it! We actually don't do thermal coating on the WRX Jpipe, with the way it's mounted, it gets plenty of cooling air and doesn't necessarily need a functional coating like the downpipe does!

[@franciscosalgado333]

@@GrimmSpeed it’s all good I went and got it Cerakote coated to protect from rust.

[@GrimmSpeed]

@@franciscosalgado333 An extra coating of protection never hurts, but keep in mind high quality stainless 304 steel like we use doesn't significantly rust over time, it mostly just rouges!

[@mrphiscal]

Does Grimmspeed plan on making a master cylinder brace for va chassis??? Im asking for a friend 😆

[@GrimmSpeed]

It's definitely on the to-do list, just gotta get to it!

[@Jabbazuki]

LOVE the video, with the exception of the Faction Fab coilovers? I mean come on now... everybody knows nothing beats Fortune Auto on subbies lol =)

[@GrimmSpeed]

Fortune Auto's are great also! But we are very happy with the Faction Fab setup so far!

[@enriqueesparza3858]

Intake and downpipe adds 50hp?!?

[@Jaeguso]

do you guys not offer your stage 2 kits anymore?

[@5ColorRice]

What gear is the car in on the dyno? The WHP and torque values seem to be extremely inflated. If the car was in third gear (especially since 2019+ STIs have a shorter third gear) that would account for the inflated WHP and torque values.

[@GrimmSpeed]

Check out the explanation we just posted as a comment above!

[@marvin54]

how many HP make

[@GrimmSpeed]

Check out the end of the video where Art breaks the figures down!

[@Loatsofdetail]

Omg I won’t that down pipe. Do u ship to Australia do u have a part number for that down pipe

[@GrimmSpeed]

That's what we like to hear! We do ship down under, check out the pipe right here: www.grimmspeed.com/grimmspeed-catted-downpipe-08-14wrx-08-sti-05-09lgt/

[@tykiembooker1663]

I'm a bit skeptical of these power and torque numbers. 391 torque with only a downpipe and intake? I have 351 torque and 361whp on 93 gas with full bolt on's and Cobb 20G turbo upgrade. I also have an upgraded fuel pump and 1050 injectors. I switched to FMIC (Grimmspeed of course)...how are my numbers lower than yours and I'm over 17k in mods for my car?

[@anff]

Hi guys how’s the sound while keeping the stock cat-back system on?

[@GrimmSpeed]

Definitely an increase in volume after downpipe/tune, but the GrimmSpeed Catback we put on in the next stage will round things off nicely!

[@bigo3902000]

You guys selling that stock downpipe? Asking for a friend

[@GrimmSpeed]

Haha, we're holding on to that until prices hit $1,500

[@trnql_noir]

Does the GS downpipe throw a CEL on the 2019+ STi? I know the COBB GESI dp was discontinued for that reason

[@GrimmSpeed]

With our current offering, yes. With the upcoming GESI downpipe, potentially no.

[@trnql_noir]

@@GrimmSpeed Looking forward to it!

[@juliomiranda6801]

Is it safe to upgrade DP without upgrading the fueling?? I heard the car will be on the leaner side if you don’t upgrading injecting/pump?

[@Smeedia]

With the 15+ STI you really should be doing the fuel system with an intake/downpipe combo.

[@gavinbartsch8438]

Agreed pretty sure that’s the consensus with the VA chassis, they run out of fuel pretty quick.

[@watch6058]

Do it smart if u do dp u can't do intake if u do intake u can't do dp if a tuner says ur good I'd recommend running for the hills or get ready for an iag block delivery and ur down Payment for ur house goodbye 👋

[@user-mx6mh5rd7y]

@@watch6058 One way ticket to DetoNation

[@juliomiranda6801]

@@watch6058 even if upgrading the fueling?

[@GR8GUY54]

Any updates for the 2021 STI or did I just buy myself a slow car? Your website for stage 2 is missing information and grayed out.

[@GrimmSpeed]

Not sure what you are referring to, but we would like to help you figure out the issue you are having. Please contact our support team via email or phone and we would be happy to help you out.

[@anff]

Hi guys can you use this with the stock exhaust? How much louder would it be than stock?

[@GrimmSpeed]

You can use the factory catback at this stage, but it would be start to upgrade around the same time.

[@TheSibster86]

Stage 3 is a heat shield? Seriously? Install it anyways so you don’t heat soak the tmic

[@GrimmSpeed]

The heatshield is just PART of the Stage 3, the GrimmSpeed TMIC is the main course, you'll see us installing both in episode 4! www.grimmspeed.com/stage-3-power-package-2015-20-subaru-sti/

[@benjaminstuart8626]

what tune were you on when u drove the car with the parts on to the dyno?

[@GrimmSpeed]

We were tuned by JM on our Stage 1 setup: kzbin.info/www/bejne/rGrcoJaKhKmHoJY

[@danpark3514]

Sound comparison?

[@GrimmSpeed]

Unfortunately we didn't film a direct sound comparison, but as we're wrapping up we can insert a clip into the last episode of before/after.

[@noahplante8592]

How much power can you get from a stage 3 power package on this sti

[@GrimmSpeed]

We'll be posting the Stage 3 Power Pack video after part 2 of this one, but the biggest power bump happens during Stage 2 with the addition of the downpipe. The name of the game with upgrading the TMIC in Stage 3 isn't to make more power, but to keep things nice and cool.

[@CarStory]

How does the stage 2 affect gas milage? I hate to turn my STI into even more of a gas hog.

[@GrimmSpeed]

Bad news. It is most likely going to make your gas milage worse. More air, more fuel, more power, worse gas milage. But the extra power is worth it right... In order to make the most of a bad situation, be sure to pro-tune for your specific setup. The better the tune, the more efficient the car will run. Also having the ability to change maps helps so you can run at high boost when you need to and change it to something lower for daily/street driving.

[@skaterskye]

Can this coating be done to the wrx j pipe as well?

[@GrimmSpeed]

You CAN get it coated, but since it's a low-mount turbo setup a thermal coating isn't as necessary as it is on a standard EJ turbo setup!

[@skaterskye]

@@GrimmSpeed Good to know. Thanks!

[@dodgerdawg42]

y'all got any CARB legal parts for us in Cali? 😓

[@xil3ntkha0s]

Best to move out of Commiefornia if you’re looking to mod your car.. or have any kind of fun.

[@dodgerdawg42]

@@xil3ntkha0s California where you can change your gender but not your downpipe smh

[@xil3ntkha0s]

@@dodgerdawg42yep pretty much lol

[@GrimmSpeed]

We applied of CARB Certification on a number of parts, but unfortunately it's a long, bureaucratic process.

[@xil3ntkha0s]

@@GrimmSpeed is the stealth intake CARB certified? Or is there a list of parts that are on your website consumers can access?

[@Lucifurian66x]

Where is JM

[@sungpumaroofingrestoration2748]

Whats going up guys i need some help i have a wrx 2019 and i want to install stage 3 power kit but i live in arkansas and i cant find any reputable tuner/dyno shops around me do anyone know of any im willing to travel out of state... Any sugestions??

[@GrimmSpeed]

Hey Juan, Give our customer service team a call. They should be able to point you in the right direction for reputable tuners in your area. Also, i suggest reaching out to your local Subaru community.

[@GinNBoost]

How much did all of this cost so far including labor and dyno tuning time?

[@GrimmSpeed]

The performance mods are from the Stage 2 package: www.grimmspeed.com/stage-2-power-package-2015-20-subaru-sti/ Things like the aesthetics/dress-up parts are in the $500-600 range so far. As far as dyno time, the typical session is a few hundred dollars, depending on the area you're in and the labor was all done "for free" by yours truly! -Art

[@Haylem]

Where can I get a free stage 2 setup haha. #MN

[@GrimmSpeed]

Haha, hey if you got the $1,400 stimulus check, that's pretty much a free Stage 2 kit...

[@Ryan-nz7qr]

I have the same downpipe on my car but I still don't get the benefit of a divorced wastegate dp while running an external wastegate.

[@GrimmSpeed]

If you're running an EWG there really isn't an added benefit to a divorced setup, however it is the best way to maximize a turbo with an IWG, whether that's OE or aftermarket to avoid overboost.

[@1ledp621]

Send me a dp to the communist state plzz

[@GrimmSpeed]

We hear Nevada PO Boxes are getting extremely popular.