butler

Hi all, going to add a few modifications to my97 sti v3 in the new year and was wondering what power i would be looking at gaining. Going to go for

full decat system
Ported o/e headers
Green panel filter
Walbro fuel pump
Fuel pressure reg
Apexi power fc

I also dont know if i want to upgrade my i/c? Would my own i/c suffice or will it limit the capability of the above mods? I only drive the car to work and back and it will never see a track! I rarely give it the beans and this is why i'm unsure about changing the i/c?? Your help/advice would be great. Lee

911

Over the last few years I have done exactly what you are planning.

To you spec you can expect a very nice car @ 315 bhp, assuming a map on the Apexi by someone good.
That will be on Vmax, no addatives.

You might want to consider a 3'' not 2.5 decat as you will want more later!

The stock V3 TMIC will be fine.

The car will drive really well I assure you.

I have now gone a little beyond your spec to 370 x 350 bhp and the car is a lot coarse on the road.
Good luck
DropShots.com

butler

Will 315 make a quicker car mate? And what kind of torque Would there be? As far as mapping is concerned i will be going to Andy F .

jameswrx

iTrader: (4)

I'll go out on a limb here and say.. yes! more power will make it a quicker car

butler

What i meant was will i notice a big improvement?

911

Only a touch. Andy did my map too, ace guy.

For an Sti to go quicker you first need to do the suspension. Nothing grand, just with the right simple bits.
That then will allow you to use every bhp/lbft Andy can find for you with the Apexi.
I hillclimbed my Sti in the '315 + Whiteline' mode for 2 years and the car was really quick for its spec.
However, if you just want a Drag speed benefit, then you will feel some advantage, but not too much, but the car will be much more responsive and useable, till the suspension lets you down that is...

jameswrx

iTrader: (4)

I'd say if your car is standard and you're doing those mods you listed you will notice a fair improvement.

The full exhaust system makes a nice difference with all cats removed alone.

butler

I've got it lowered just now on tein springs. In the new year i'm going to get new rear ARB and solid drop links, would i also benifit from an anti lift kit?

Sc0oby

same as specify except i didnt have pump and regulator but have a FMI got 240hp at the 4wheel dyno