- Oct 19, 2000
Ive been testing the Dr.D exhaust for the past few weekends. This is one nice pipe, it fits perfect and is much quieter than the DSP(FMF). It is louder than stock but not louder than a 426 with a stock muffler. The only change to the stock jetting was to richen the fuel screw to 2 out. I used sunoco 94, in all of Doug's testing he used pump fuel. On the track the bottom is a little better, the mid about the same but the top pulls much harder and longer. Throttle response is excellent and it retains the stockers nice mid snappy response. I never felt the stock pipe was better in any part of the powerband over the DR D. All his hard work really shows on how well this system works. Pete and i will dyno it but regardless of the results it passes my track test with flying colors!