i have a 88 glx 2+2....dual exhaust....what do you guys think would be better for more horsepower....dual or single....exhaust piping width....i know dual is supposebly better for top end....right now im wondering bout horsepower cause im guna be doing a n/a to turbo conversion....thansk for the help guys


right now i have dual exhaust 2 1/4 - 2.5 piping with a 18inch racing resonator and 2 rs racing cans in the rear....

 

true duals make the most HP

I went single 3" jsut to be cheap