|
just my 2 cents here.. i have found that an h-pipe, on a dyno and at the track, delivered 20 rwhp more than an x-pipe.. and gained 80 rwhp by taking flowmasters off and installing straight thru mufflers, i have the dynomax welded mufflers 2.5 inlet and outlet, they open up to 3 inch inside the muffler.. where as manaflows reduce the pipe size inside muffler, but are still good mufflers.. if you have a stock car x-pipe works great.. if your car is modified go with h-pipe and straight thru mufflers.. stay away from chambered mufflers, unless you prefer the sound over hp..
|