2008 mustang 4.6 auto k&n typhoon intake, bbk 62mm throttle body, factory manifolds, xpipe, no cats. Has been tuned. Belongs to a buddy of mine that just bought it built this way. he had a 3.73 gear put in and I was setting up the gear change in his speedo. This vehicle just will not accelerate till about 4000 from a dead stop. It is just like traction engages, have turned switch on dash off then read on here how to disable in computer. Even if you sit and get the tires spinning as soon as you take off the engine pulls back till no spin.The timing seems slow to ramp up and the point of 28 degrees is where the car takes off. I have gotten frustrated and I know I am overlooking something stupid. Help before I pull what little hair I have out mustang saturday.hplstang.hpltraction control test.hptmustang stock tune.hpt