ok so im trying to "winterize" my GT. So i go back to the stock tune. change the oil, and a bunch of other winter things. Anyways, i drove my car after i put back the car from a 91 tune to the stock tune which ment resesting the Predator. i drove the car around and relized that the speedo was incorrect.
So i went to the "Factory HP tune" and only modified the axle ratio to 4.09 and the tire ratio to 812 . now when im on the freeway and im doin 2200 in fifth the speedo says im doin 85mph and if i do 3000 im doing 92!!!!!!!!!!!
How can i correct this? is my predator not giving my ECU the tune? Ive got 4.10s and 285/35/18 tires in the rear wats the correct setup on the predator?
So i went to the "Factory HP tune" and only modified the axle ratio to 4.09 and the tire ratio to 812 . now when im on the freeway and im doin 2200 in fifth the speedo says im doin 85mph and if i do 3000 im doing 92!!!!!!!!!!!
How can i correct this? is my predator not giving my ECU the tune? Ive got 4.10s and 285/35/18 tires in the rear wats the correct setup on the predator?