I dont know maybe my tires have better traction??? well that wouldnt explain teh same 2.5 60' i guess.....i have no clue but im stock expect clutch and im 100000% positive thats what happened and alot of my friends cant belive it eather, i have a friend with 1999 Cougar that did 15.7 at 87 MPH with intake, so i dunno my car is wierd.