I am interested in the same thing because that’s what I am going to do , I am waiting on the mechanic to do my Kooks header’s and full 3 inch Corsa exhaust, I have a base model 25 GT with the A10 and 3.55 gearsJust wanted to see if anyone did headers exhaust and intake with a 93 tune. See how you like it and if you notice a good difference!
Cheers!