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? so the bending makes it quieter but does it change the tone of the exhaust

i recently got a glass pack muffler and a custom bent tailpipe to the stock hangers on my 91 X. my question is if the exhaust shape will effect the sound quality produced by the muffler. i know the thickness will to a certain degree. and is mandrel bending going to sound alot better? i am going...

iamtodd, did you buy those pipes as is or did you have them custom made at a local shop. the rookie, my glass pack sounds different than when it was just dumped under the car, more backpressure and i also think its because the pipe shape, its not mandrel bent. how much of a difference in cost...

the rookie, you said you have made custom exhausts etc. does the shape of the tubing create a different sound, and what about tube thickness. also what do you think about a flowmaster 40 with 2.25 in and dual 2.25s out on a 91 X

therookie, how do you propose to lower the backpressure on an explorer without losing flow, i did and i lost lots of flow, the engine had no power from idle to 3500 RPM, is this because it has exhaust manifolds.

yes backpressure is bad if you want power out of a big block 454 at 4500 rpm. but for everyday explorer use and offroading where low end power is needed some backpressure is needed to gain the maximum amont of power at these opperating ranges. i have read articles on backpressure from major...

actually, therookie, you are wrong in your thinking all forms of backpressure is bad. if this were true then pro drag racers would not have headers on their engines. back pressure IS needed. headers also "suck" the exhaust out of the engine due to the other cylinders flow. too little back...