b.r.i.a.n.

230 whp on a dynojet is pretty easy to achieve in an ap2. all you need are the right bolt on's and a tune.

Slowcrash_101

No I have not, my experience is limited to overhauling the bottom end on my motor, new sleeves, pistons, rings, connecting rods, and a reground crank. 9,500rpm with a 102mm stroke is nuts, that's 32.3 meters per second piston speed compared to a F20C which has about 25 mps piston speed at 8900rpm. You would have the same piston speed as an F20C at 8,600 rpm at about 7,300 rpm with that much stroke. Given the volumetric efficiency of the head I don't think you would be making a heck of a lot of power at 9,500 rpm with a 102 mm stroke, plus you would definitely need to upgrade the valvetrain. Of course I've never done anything like that so I don't know.

Out of curiosity how would proper cams eliminate the need for adjustable gears?

Uwan

I can't really answer your question bro but I know there are at least 2 companies that are in the process of producing new aftermarket cams for the S. I can't wait to see the results and I wish both guys the best of luck. Once these cams come out I'm getting new cams one way or another. Either 1) the new cams will be a hit and destroy everything that's currently on the market. Or 2) they'll at least lower the demand and price for BC stage 2's and I can pick a set up for pennies lol.

s2000Junky

You’re going to spend a fortune on splitting hairs NA. The best bang for the buck is to swap out the cat for a TP so you can effectively lower vtec to 3500-4k rpm and gain a substantial amount of power in the mid range where there is power to be found in this engine. (If you retain the CAT you will only see gains from about 5k rpm.) You can effectively do this with a simple Apexi Neo/vafc and raise the fuel pressure with an adjustable regulator to add more fuel in that area where it will be needed. You will get 90% of the power gains from this as you would from a full EMS, but at less then half the cost. If your rich and want to eek out every fraction of a hp then do that, otherwise go for value and simplicity.

Uwan

Ding Ding lol

Aurex

Not really a power adder....more like a multiplier....

Get a set of gears too.

DrivenAP2

It's been a little beaten to death. A test pipe and tune is the best thing you could do.

You could do all the math of the bolt on's.
T1r-70mm EM seems to be best producing exhaust 14Hp (source: Evasivemotorsports)
PWJDM seems to be the best producing intake 12.5hp (source SOS web site)
J's seems to be the best producing header 7 hp (source S2ki header thread).
You would have to tune for all of them.
So that's 33.5hp bolted on. A test pipe, and lower vtec engagement should be good for 10hp to the wheels.
S2000's typically make 200-206 stock hp. On the high end you're looking at 245 hp.
Maybe, as none of this is proven. I doubt the combination would prove that effective.

Thats also the cost of a superchager lol
1099 intake
1300 exhaust
1600 header
80 testpipe 70mm)
1500 tuner (or ability to tune)

or maybe an URGE head would net you 240 to the wheels. That's only 2000, but you will still need to tune.

plizzat

Is it true that headers hurt peak hp on the f20c? I purchased my car with dc sport's installed.

riceball777

The best way to make NA power is to drop a v8 in. In my eyes there's no real other way to go about it if u want a fast NA s2000. It's that or turbo your s2000 or just stay slow with a NA 4 cylinder.

theprophet36

Agreed