i now have the U/R pulleys...i would llike to do the following as i have but dont know if any will get check engine light or hurt my car.......any thoughts, the list is as follows


plenum (dont know which one, any thoughts?)
jwt pop charger
stillen exhaust
stillen header
random tech cats(heard these arent so good though)
stillen ground wires
nismo suspension
nismo sway bars
clutchmaster flywheel and clutch and pressure plate

let me know what you think

 

Shouldnt get a light for any of the mods. I have

Underdrive pulley
kinetix plenum
home made pop charger
test pipes

Hope to get a new y pipe in the near future.