by Turbosolara » Mon Dec 29, 2003 3:39 pm
S-AFC is a piggyback computer that controls air fuel mixture. Since you have intake and exhaust , the A/F ratio will have slightly off, therefore you can use it to adjust air fuel misture to idel and have it dyno tune to get the optimum performance. I think for such of light modification, you should get 5hp gain on the wheel MAX after dyno tunning. Dyno tunning usually cost about $150-300 for SAFC tunning.
If you only have upgrade spring than i would say you need to replace the shock too, otherwise your car will just bounce like a boat. there is someone is selling short ram cold intake extension kit in this forums, search for it. you also can mod your rear anti-sway bar to TRD, or get short shifter if you have manual transmission. If you have v6, you can get TRD supercharger, if you have i4, than you can get rippspeed supercharger kit or custom make a turbo kit.
2002 Lexus IS300 5MT
1997 Prelude base, 5MT