Ok so I recently purchased a 2003 Grand prix white AP1 ! I've owned 5 240's .. 3 rx7's.. 1 Evo 8.. The s2000 Is awesome!!! But I'm looking for more power similar to my rx7's. So I've put together a parts list of what I'm going to do and I just want to know what power gains I'm looking at or If anyone has done the same set-up! Here we go!

41k miles on motor.

Apex i SAFC neo or Greddy e-manage ultimate
Okada Coil paks
AEM V2 Cold air(got it for $100 of my friend)
Bc stage 2 cams
4.44 gears
Mugen header(Just got this for $300 of my friend )
2.5 Straight pipe exhaust shop special! no cats or resonator(Aluminum straight as a arrow! done by rms In socal. A rotary shop)
Act 6-puck sprung
Act aluminum flywheel or possibly lightweight steel
Unorthodox pulleys
Air pump delete kit
And of course a tuner! haha

Thats about It for now. Just looking at what power I'm looing at, torque numbers. power band. mid-range.



Tires and suspension I already took care of! Megan track coilovers and 17x9 all around gram light 57s-pro. 255/40/ Azenis rt-615 all around

 

Looks like a nice build. It will sound like a 93 Civic with an e-bay exhaust around town without any cats or resonators. I'd recommend 2 resonators - it won't affect your power output.

Edit - I'd assume 25-30HP over stock, but it will be MUCH faster with the gears and clutch. I'd peg it at a low 13 second car with 12s possible with some serious driving.

 

I just chopped my blitz nur spec muffler off my rx7 and It will be going on the s2, so I will see how It sounds If It sounds too much like your average civic with exhaust which I hate with a passion then I will add some resonators..

I just picked up the clutch,flywheel and pulley kit. waiting to get It all so when I go to my tuner we can see what really made power and changed. Part by part! He's a good friend and lets me use his tools and shop for free so I'm doing this free of charge except the tuning and dyno. Its a dyno dynamics and he does sae correction. Can't waitt!!!

 

+15 peak HP

 

 

Smart man. Saving weight is always a plus too, but I agree the gears and tuning all the parts are going to be the best thing. You may see every bit of 215 at the wheels, but with lower VTEC and those gears, should make for a fun car