[silver_scooby]

Hello folks!

Well I agree not to mess with the warranty but... I went with the JB4 unit (as will all my cars I did) so I have a lot of tuning experience with it. Anyway, did you know just by adding E30 to your *stock 2022 WRX will unleash 30 HP... with no tune or nothing else. Already been proven and I can verify via track times ... yes it does work. Been with the Beta 2022 JB4 since it initiated with a lot of testing. As of now, the latest update seems to have ironed out the wrinkles in the AFRs and EWG arm issue. Do the JB4, get the BMS intake and run Map 4 with a shot of E85 (to make ~E30) = ~ 339 WHP. You'll have to adjust your Fuel Bias and Open loop settings to get the optimal AFRs in which various settings have been already tested, so it's easy to dial in now. You'll see a huge difference. You can knock this stuff off and resort back to the stock setup no problem without the warranty issue.

BT is working on a TMIC which has dual 1/8" NPT bungs. This will utilize their prototype chargepipe injection kit which allows the JB4 to directly control a 5th fuel injector off the low pressure system. They increased the E85 mix to E60, cranked up timing, and got ~381 WHP. They expect this will come more in to play when people start doing larger turbos, straight E85, etc, but they found the side benefit of bypassing some ECU fueling limitations they were previously fighting. Check out their CPI (Charge Pipe Injection) updates to get 400 WHP!

FA24 is a stronger motor (rods, springs, cylinder walls.. direct port injection) so I think 400 WHP mark would be fine. You can still take all this stuff off for warranty issues but it'll be a hassle. Going the CPI (later on) route, might be a hassle taking the setup off & on when taking the car in to address warranty issues or service though

While I agree that the FA24 is a stronger motor and E30 / 330whp is a safe number, JB4 or any other piggyback is never going to be as good as a custom tune. It's essentially trying to fool the ECU by intercepting signals.

Usually dealers will never know or care if you take off the JB4 before warranty work. But if there's an engine failure, Subaru may ask the dealer to send them the ECU and install a new one. In that case, Subaru can go through the datalogs & easily figure out a piggyback was installed.

 

[ProZach626]

There's also the case of not wanting to be unethical.

As far as adding special fuel goes, I just don't get it. On a track car it makes more sense than chasing clout with a daily driver. I don't even know where to find E30 or E85 here.

 

[silver_scooby]

There's also the case of not wanting to be unethical.

As far as adding special fuel goes, I just don't get it. On a track car it makes more sense than chasing clout with a daily driver. I don't even know where to find E30 or E85 here.

Not sure what's unethical. E85 is available at walmart, chevron, kroger & most truck stops. At least 3 within 2 miles of my apartment. My engine is stock but I regularly add 2 gallons of E85 to a full tank of 93 whenever summer temps go above 105F. Helps with knock.

Edit: Ah ok, yeah missed the jb4/warranty part. Thought you were talking about numbers on E30 vs 93. Yeah hiding the JB4 for warranty work is unethical.

 

[zax]

There's also the case of not wanting to be unethical.

As far as adding special fuel goes, I just don't get it. On a track car it makes more sense than chasing clout with a daily driver. I don't even know where to find E30 or E85 here.

This.

Anyone that comes in here saying "I'll just return to stock if the engine blows" will immediately earn my ire. You are unethical. If you want to mod the car, fine -- then you made your bed to lie in.

Regarding the FA24 - it's still a new platform. I'm not sure the limits are fully known yet.

 

[ProZach626]

I live in an Illinois community about 30 minutes from Saint Louis. I can't find any E85 fueling stations near me, even at our Walmart. A quick google search says there are only 140 gas stations carrying E85 in Illinois, yet it remains, "Among the top E85 markets." A co-worker has in in barrels at his house for his track/occasional weekend use Mustang, because he can't find it locally. It's not readily available in our area, yet daily driven vehicles are still getting tuned for it. Sounds like a pain in the ass locally.

 

[zax]

Flex fuel is definitely the way to go.

I'd hate to have to carry around test strips and a gas can to hit E50 because E85 is rarely more than 70% ethanol around here.

 

[silver_scooby]

Guess I got lucky with E85 around here then. Among the top sounds like marketing bullshit, maybe chicago or other specific cities have high usage.

Yeah no way I'd ever carry strips and calculators for fuel. Flex fuel is the only reasonable option. Cobb had some instagram post about CARB legal flex fuel for the STi and VA wrx by EOY or early nxt yr. I'll hit about 45k miles by then. Should be a good time for flex fuel and garrett tmic.

 

[ProZach626]

Illinois is pretty much Chicago, so I'm sure that's where it is. 9 out of 10 people in Illinois live in the greater Chicago area. The rest of the State's priorities are ignored. It's a great place to be.

 

[Trackrider54]

As a new WRX owner who has no intention of tracking my car outside of maybe an Autocross event just for fun, I'm wondering what the motivation is to try to get more power out of the engine. Granted, I'm not a "drag racer" as I live in Tennessee and we have hills and curves. In stock form, the car builds speed very quickly. I find the biggest shortcoming, for me, is not the engine...but the brakes. I wish they had more bite. More than a few times the car built more speed than I was anticipating and I had to get hard on the brakes and the pedal feel leaves something to be desired. I am planning to bleed them with some high quality fluid and see if that helps. But I will probably end up replacing the pads with something a bit more aggressive. I saw a brake kit for sale, but at $3000...I'm out. I'll just start braking sooner and use the money for gas and tires.

I've spent a lot of time on tracks, but on a motorcycle. I understand the needs of the track. But what my experience has taught me is that the unique needs demanded by the track is usually suspension, tires, brakes, and cooling. Engine power is seldom worth the effort because it costs so much for such small gains and you rob from Peter to pay Paul...if you make more power, typically reliability goes down. That doesn't mean you will have a failure...just more of a risk.

 

[WRXingBALL]

@Trackrider54 - EBC pads and fluid and the braking matches the power no problem for the street. Well worth the $400 CAD for me. The car could use a slight bump in power, something that seems to be easily done, but I will wait a little and watch first, and see what comes of the Cobb accessport and the tuning around it.

 

[Trackrider54]

@Trackrider54 - EBC pads and fluid and the braking matches the power no problem for the street. Well worth the $400 CAD for me. The car could use a slight bump in power, something that seems to be easily done, but I will wait a little and watch first, and see what comes of the Cobb accessport and the tuning around it.

I've got my EBC pads on order. I decided on the Red Stuff pads as I don't plan on tracking the car and the Yellow seemed like overkill. DOT 4 fluid will go in too.

The Accessport interest me not just for going fast, but I have found that some tunes actually make the car better to drive. I've had some custom tunes done on track bikes that gets rid of all the lean emissions crap that cause the engine to run like crap at some RPM. Wondering if the Accessport does the same or if it's just a peak power and torque over all else sort of thing.

 

[WRXingBALL]

Not sure what the OTS tunes from Cobb are like but when I have had tuning done to the Golf R it made quite a bit more power but drove hiccup free and as if it was from the factory…but then again it was VW and not Subaru…I have found the car fun but a little quirky.

 

[silver_scooby]

I've got my EBC pads on order. I decided on the Red Stuff pads as I don't plan on tracking the car and the Yellow seemed like overkill. DOT 4 fluid will go in too.

The Accessport interest me not just for going fast, but I have found that some tunes actually make the car better to drive. I've had some custom tunes done on track bikes that gets rid of all the lean emissions crap that cause the engine to run like crap at some RPM. Wondering if the Accessport does the same or if it's just a peak power and torque over all else sort of thing.

It's both. One of the selling points for accessport was driveability. The initial tunes slightly improve low end power and reduce rev hang to manageable levels.

 

[Trackrider54]

It's both. One of the selling points for accessport was driveability. The initial tunes slightly improve low end power and reduce rev hang to manageable levels.

In that case I might buy one. It seems to me that the 2.4L engine is making substantially less power than it should be. When you look at the number the stock 2.3L "Ecoboost" Ford engine puts out, it's more than the Subaru 2.4L. The HP Honda and VW are getting out of a 2.0L is higher than the Subaru 2.4L.

I don't think the car necessarily needs more power, but I do wonder why Subaru didn't turn up the boost a bit? Maybe they were concerned with CAFE numbers or something. I honestly don't know.

 

[WRXingBALL]

Subaru was probably told to keep the output below the GR Corolla by Toyota, which didn’t want anything to outshine its awd 4 door…

 

[Trackrider54]

Subaru was probably told to keep the output below the GR Corolla by Toyota, which didn’t want anything to outshine its awd 4 door…

Ah…well Toyota does have some sway. My thought was that an STI version may be coming and they wanted to detune the regular model.

 

[ProZach626]

My guess is fuel economy, emissions, and leaving some room for the STI to shine.

 

[WRXingBALL]

My guess is fuel economy, emissions, and leaving some room for the STI to shine.

Don’t you mean”STe”? I have only heard there will be no STi based off the VB…maybe an electric or hybrid.

 

[ProZach626]

No, I mean the STI that never happened.

 

[WRXingBALL]

Yeah, guess if they had planned one before it was axed, then sure…but companies always leave room for power as they try to upsell…VW Golf R handled 375HP easy, but I am sure they didn’t want it stepping on the RS3’s toes, and in turn that easily makes 550HP, but they didn’t want it overstepping their more expensive products, and so on and so forth…