What kinds of gains do you expect with E / I and tune?

[Partial Stall]

Good morning all. I was thinking about this last night, and I'd really like to get the BRZ up to ~200 wHP (which is about +30 HP from what i've seen so far).

Obviously no one has any real experience with modding yet, but I'm going to be keeping everything N/A. Do you guys think ~30 whp is even possible from these simple mods?

[Driver]

no, between E/I I'd guess 11/12 whp.

[Saibot]

Add VTEC stickers + air plane wing + mean body kit + muffler delete + massive camber + overstretched tires = +400 hp

[u2b]zhT3C9mHLZ4[/u2b]

[dabocx]

At the most maybe 10-15, though thats pushing it. I think headers are going to be the best bang for the buck in the I/H/E/T setup

[R0ME0]

Removing cats to a test pipe will do a lot as well!

[Subie]

Originally Posted by dabocx

At the most maybe 10-15, though thats pushing it. I think headers are going to be the best bang for the buck in the I/H/E/T setup

Don't these cars come with headers? I don't think I/E/T will give much more than 10-15 WHP MAX, probably less.

[dabocx]

Originally Posted by Subie

Don't these cars come with headers? I don't think I/E/T will give much more than 10-15 WHP MAX, probably less.

Yeah 10-15 at the most, most likely going to be more in the 6-10 whp range but honestly theres no way to know.

Aftermarket headers and testpipes will be considerably better than the factory headers that much im certain of.

[carbonBLUE]

Originally Posted by dabocx

Yeah 10-15 at the most, most likely going to be more in the 6-10 whp range but honestly theres no way to know.

Aftermarket headers and testpipes will be considerably better than the factory headers that much im certain of.

i bet with just a tune, you could get 6-8 whp... I/H/E/T would put you around the 200whp mark easily...

[Ryephile]

Originally Posted by R0ME0

Removing cats to a test pipe will do a lot as well!

It's time to give up the old stereotypes and join the 21st century, where smelling like hydrocarbons is not attractive, intelligent, or necessary. Education time!

From the Grassroots Motorsports test on a Miata; stock vs. test-pipe vs. aftermarket high-flow cats.

[OrbitalEllipses]

Sigh. No 30whp gain like on my WRX from just a simple exhaust swap.

[Ryephile]

Originally Posted by OrbitalEllipses

Sigh. No 30whp gain like on my WRX from just a simple exhaust swap.

I'll hazard a guess [isn't that what we're all doing?] that since the engine is already 100HP/L, squeezing more out of it via natural aspiration won't be easy. I foresee a host of "intakes" actually losing power vs. stock.

[OrbitalEllipses]

I wouldn't have expected it to, but with the exorbitant prices manufacturers will want for a stainless steel pipe that has a catalytic converter welded in...it gets depressing.

Subaru intakes are generally well designed. WRX/STI intakes don't really need to be changed until 400whp unless you need the space. In addition, those cars have HOT underhood temps so anything other than a cold air is useless. I bet the stock intake here functions as a short ram as well, so unless you want to move the filter element into the wheel well, aftermarket intakes might not be awesome. We'll see what comes to market in just a few months though.

The real reason to go aftermarket intake on any stock twin, IMHO, is to get rid of the stupid sound pipe.

[Rampage]

Originally Posted by OrbitalEllipses

The real reason to go aftermarket intake on any stock twin, IMHO, is to get rid of the stupid sound pipe.

Should you just be able to cap that off and remove it. UNelss there is some kind of pulse effect in the intake tube it should be and easy removel. Save a little weight too.

LIke a couple people said above, I think it will be tough squeezing much horsepwer out of this while NA. I would guess less than 10 with simple bolt ons ans a tune.

[AVOturboworld]

It's a lot harder to squeeze horsepower out of an n/a than a turbo model, a looot harder. It's also more expensive, since you will end up doing cams, intake, exhaust, tuning to get +10-15hp, where you just need a reflash to get up to +30hp out of a turbo model.

And keep in mind that most n/a power upgrades work by simply move the power curve upwards to get those gains, which can impact driveability.

Regards,

Paul Hansen
www.avoturboworld.com
www.facebook.com/BRZSportsCarClub