i just ordered a dr.d slip on. reason being i need to be under 96db for next season. its supposed to be the highest power/lowest db on the market. im running an esr complete pro series now and the power band is incredible, but its loud as h3ll. all u really gain with the aftermarket is 2 horses tops. key is to jet it dead on. the numbers the manufactures send for your jets might be slightly off, all because we are at sea level and all the big aftermarket companies are in the mid-west or so. cal. if u have the dirt wheels aug. 2004 issue it has a complete shootout with all different pipes. dr. d was the winner.
Yea i know i read the whole thing but in dirtwheels is says a 5 hp increase?