93 to 94 octane turbo tweak street chip 20* 1/2 gear & 18* 3/4 gear with adjustable timing and fuel. FOR STOCK INJECTORS I went to different injectors only a year old $50.00 shipped
i am not sure if you call eric at www.turbotweak.com i am sure he would know . all i know is that the car ran awesome i was able to run 18# of boost with no knock and it idled SMOOTH