Tunning is everything. If you add more air in the motor then you have to add more fuel and spark. Its a must. and I have the vafc on my 96 and it still didnt give me enough fuel. A normally aspirated street car runs around 13.5 - 14.7. meaning for every 14.7 parts air you need 1 part fuel. on a turbocharged car you need to run much richer like 11.5 - 13 depending on the amount of boost. im running 10psi and my fuel is tuned to 12. so for every 12 parts air i run one part fuel. Dont go without getting tuned its important if you plan on not blowing your engine!