With Flowmasters welded in and a drop in K&N my wife's old 99 GT Auto made 216hp/256tq running a best of 14.5@95 with a 2.2 60'. Adding an o/r h-pipe, K&N FIPK, Accufab 75mm t-body & plenum, and a 91 octane tune, the car made 245hp/271tq and ran a best of 13.9@99 with a 2.2 60'. 29hp and 15tq and a .6 1/4 mile time reduction for a total of $750... not bad imo.
No dyno numbers for her 02 GT 5-speed yet, but BONE STOCK it ran a 14.2@99 with a 2.2 60'. With an 89 octane tune, K&N FIPK, and the Accufab stuff it's gone a best of 13.8@101 with a 2.0 60'. 13's are very possible on a stock 99-04 GT as long as you can get traction and know how drive.
No dyno numbers for her 02 GT 5-speed yet, but BONE STOCK it ran a 14.2@99 with a 2.2 60'. With an 89 octane tune, K&N FIPK, and the Accufab stuff it's gone a best of 13.8@101 with a 2.0 60'. 13's are very possible on a stock 99-04 GT as long as you can get traction and know how drive.