Turn off the traction control and do a brake stand, have someone spot to make sure both tires are spinning (just ease off untill the other tire hooks up, then back on the pedal again).
Does the tc stay off or does the pcm jump in and retard the timming? This is important to me
Well, I just got back from a 40 km highway run south of town to "check it out".
Bad news. :(
As usual, I always have the TC turned off. So I do a brake stand and get both tires spinning, then release and accelerate. Spun the tires all the way thru first gear up to 50 mph. Second gear up to 90 mph then I could feel the timing being pulled much the same as before.
Drove for a bit more then tried another run to check out the limiters. 3rd gear is no longer limited to 108 mph but does not go beyond 130 mph.
4th gear remains limited to 130 mph.
Just gets there a bit faster now.
This is not a drag car.....I never wanted it to be. So this may be the extent of my modding for quite a while now.
Pisses me off a little but I am happy with the improvements for spirited driving.
Guess I'll have to stick to dragging with the Firebird.