From what I've seen, a supercharger is good for about 50% more power, but costs the same as all the N/A mods you'd have to make to gain the 30hp.

Exhaust systems, intakes, ITBs all are pretty expensive for this car.

 

Yep now we know would have helped if the OP had added that info in the first place.

 

I think it will cost you a lot of money and you still will be somewhat disappointed that the gain is not more than that for that kind of money... If I were you, I'd put my money into some kind of real supercharger or turbo

 

[QUOTE=Lionheart,Jul 4 2007, 03:54 AM] I think it will cost you a lot of money and you still will be somewhat disappointed that the gain is not more than that for that kind of money... If I were you, I'd put my money into some kind of real supercharger or turbo

 

Why are you so dead set on hitting just 30hp over stock?

After reading everything you posted, I'm thinking a supercharger kit would be your best fit. In a 900 lb. car, a supercharged S2K engine should be wicked fast. Both Comptech and Vortech kits are pretty much bolt on. No changes to your internals, headgasket, fuel injectors, etc. Both kits retain the factory ECU. A simple spliced in electronic signal modifier is used to hide boost from the map senor. If you find out down the road that the base supercharger kit still isn't enough power, you can always modifiy later...add a smaller pulley for more boost, larger injectors, piggyback or standalone management, etc... Both kits are very reliable (especially in stock form).

A turbo on the hand isn't a simple bolt on (with the exception of the Greddy kit that just came out). More money, work, tunning, etc. is required to make it reliable. Most guys use a thicker head gasket to drop compression and run stand alone management like the AEM unit for safety. You will need larger injectors and several other items to make it run as it should. Also, I'm not real sure how well a turbo would operate on a track...heat, lag, spool up time.

Please check out the "Forced Induction" forum for more info on both superchargers and turbo applications. You should find tons of info there plus guys who run both on the track. I'm running a Comptech supercharger on mine and love it. If I can answer any specific supercharger questions, please feel free to PM me.

 

FINAL EDIT...

OK...I FINALLY read your second post. Please disregard the following:


Food for thought: The S2000 is decently quick as is. Trying to squeeze a 30 hp gain will be expensive. It will feel pretty good at first but before long the car won't feel that fast any more. Until you get up into the ohmygod range of acceleration or unless you get something with kick like a turbo, the car will never feel all that fast once you get used to it. And there will always be lots of other cars around that are faster. When it comes to acceleration if you want to be king of the hill in your neighborhood you need to get a different car to do it with. Or spend a BOATLOAD of money on the S including forced induction with the appropriate internal upgrades to support 12 or 14 lbs of boost.

EDIT: Of course maybe you just want the pleasure of knowing you have squeezed the last few ounces of performance out of the stock engine. And there is nothing wrong with that. It would be an accomplishment you could take pride in. Just don't do it for the adrenaline rush because that won't last too long. And there are so many other ways to get a rush from the S2000.

 

Yeah you are right, best to use the supercharger but I don't have room in the front
at all.


Ok..pls answer me with this question:
How big or bulky the comptech supercharger?
Give me an idea the length and the diameter...just approx will do.
I like the idea of bolt on since I don't have time to tweak things because of my business. The power of the supercharger although not as wide as a turbo, is pretty much what I need for the stop and go type road race track. I need 30more hp to
upset the bigger competitors. Porsche-Pantera-Gt40 are pretty darn powerful. Not gonna do me good if just shy of 200hp. I ran suzuki busa turbo 380hp and still
those monster inching hard on me.
Anyone out here with comptech supe or supercharger lives in Connecticut?

 

aem ems, good tune you could squeeze that 30whp out.

Motec is hard beast to setup and run on any car.

aem ems is a childs play compare to motec.


I like the whole headgasket - raise the compression deal + basic bolt ons.



man, that turbo tour was great. send me a turbo!

 

It's so worth it

 

well.

i did it. KN drop in/VAFC2 tuned/70mm exhaust. baselined 197/131---->227/147 after those mods.

some have called my car a freak, some thinked ive faked my dyno sheets and the dyno. but the 13.57@105.9 and the 3 4.57'd s2ks ive pulled may dispell those haters.

my car may be a freak, or it might not. blownAP made 219rwhp on the stock exhaust with I/TP/Tune. i think that some tuners are afraid to push the S2k as far as tunes go, and thats why it gets the "doesnt respond to NA mods" rap. most sadly mod the wrong part of the car, and expect gains. its simple:

70mm SINGLE makes the most power. its loud, but you gotta pay to play.
YOU have to tune for bolt ons.
Test pipe is one of the biggest bangs for the buck.
Dont mess with the factory intake, and if you do KN FIPK/Js/MUGEN make power. the rest arent worth the boxes their packaged in.

a well balanced NA car is really the eptiome of fun, to me atleast.