Performance Robbers?
#1
Performance Robbers?
Well first to start off... I traded my Legend Lime GT Convertible in for a White GT Coupe. Both cars are autos.
I went to the track today & the Coupe is running /way/ slower than the Convertible did when it was stock. I hit 14.0 numerous times in the Stock Vert and the best I could muster this time was a 14.45 and got as bad as a 15.
There are a few differences I can think of between the two cars, the Vert had 18" all season BFGoodrich tires, this one has 17" P-zeros. Vert had Shaker 500 which I think is lighter... Coupe has Shaker 1000... the Vert is heavier to begin with though.
I just want to make sure there is nothing wrong with the new car, or any common things that go wrong with these cars that hurt performance. It might just be me getting used to the car though...
Any input appreciated.
I went to the track today & the Coupe is running /way/ slower than the Convertible did when it was stock. I hit 14.0 numerous times in the Stock Vert and the best I could muster this time was a 14.45 and got as bad as a 15.
There are a few differences I can think of between the two cars, the Vert had 18" all season BFGoodrich tires, this one has 17" P-zeros. Vert had Shaker 500 which I think is lighter... Coupe has Shaker 1000... the Vert is heavier to begin with though.
I just want to make sure there is nothing wrong with the new car, or any common things that go wrong with these cars that hurt performance. It might just be me getting used to the car though...
Any input appreciated.
#4
problem solved....^^^^ if the car is not throwing codes and drives fine I doubt you have anything to worry about. Not all stangs come from the factory created equally.....I bet not one is the same though might be close......quality vs. the idiot that could care less making the car.... JMO
#5
Did you happen to get 3.31 rear end gears in your new coupe? 3.31s paired with the pirelli 17's (which are taller than the bfgs and further reduce overall effective gear ratio) would make it significantly slower due to you not having enough torque multiplication to the ground.
#7
Not sure. I ran 13.80's @ 103 all day bone stock with 3:31 gears and the 17" P-Zero tires. After a slight tune and a drop in K&N (turbo kit coming so no CAI for me) i dropped down to a 13.52 @ 105
Edit: I have a manual though.
Edit: I have a manual though.
#9
Did you happen to get 3.31 rear end gears in your new coupe? 3.31s paired with the pirelli 17's (which are taller than the bfgs and further reduce overall effective gear ratio) would make it significantly slower due to you not having enough torque multiplication to the ground.
I think you have the tire sizes backwards
235/55/17 pirelli = 27.2 inches
Vs.
235/50/18 BFG = 27.3 inches
The 18's are a .1 larger than those stock 17's so 17's would in theory accelerate quicker. That is only theory as the BFG's are way stickier and hook better out of the hole
Last edited by Z06 Killer; 09-26-2008 at 03:26 PM.