ChromoTech Posted September 22, 2004 Share Posted September 22, 2004 Should I run my exhaust w/o a catalyst converter with my 2 1/2 in. pipe and my flowmaster 40 muffler? I have a new cat in there too so im trying to decide if i should cut it out. Im trying to get rid of that annoying high pitched exhaust note at high rpm. its kinda raspy sounding. Or i could run with the cat and get headers and run the 2 1/2 in. pipe to the muffler and run 3in. pipe out of the muffler and out the rear. (ive heard when you run smaller pipe to larger pipe it smooths or deepens the exhaust sound) sly Link to comment Share on other sites More sharing options...
Mr. Pickles Posted September 22, 2004 Share Posted September 22, 2004 Should I run my exhaust w/o a catalyst converter with my 2 1/2 in. pipe and my flowmaster 40 muffler?I have a new cat in there too so im trying to decide if i should cut it out. Im trying to get rid of that annoying high pitched exhaust note at high rpm. its kinda raspy sounding. Or i could run with the cat and get headers and run the 2 1/2 in. pipe to the muffler and run 3in. pipe out of the muffler and out the rear. (ive heard when you run smaller pipe to larger pipe it smooths or deepens the exhaust sound) sly I actually like the raspy highs that the Flowmaster 40 allows. It sounds sick, especially when you wind it up while passing on the highway. But I'd say leave the cat in if you have a new one. Might as well save the planet while we live here. But as far as I know, and based on the physics involved in moving virating air from a smaller body to a larger one (I spent 8 years heavily involved in brass instruments, particularly the tuba) yes, jumping from a smaller volume to a larger volume at a certain air pressure, you should lower the pitch attained by your exhaust, along with attaining a free-er flowing airmass. Anyways, I'd say learn to live with the sound you have. Its nice and rumbly down low, has a nice roar in the middle, and makes a sick banshee scream up high. It leaves the ricers wondering what the hell is going on under your hood. And I personally like it! Link to comment Share on other sites More sharing options...
Reido Posted September 22, 2004 Share Posted September 22, 2004 I'd leave the cat in place. I was about to help a buddy gut his cat tonight but we decided not to because they only add about 1 or 2 psi of backpressure, will probably make the exaust note raspier if anything, and too low of backpressure begins to sacrifice low end power. Oh and blah, blah, blah illegle blah, blah environment Link to comment Share on other sites More sharing options...
ChromoTech Posted September 23, 2004 Author Share Posted September 23, 2004 Maybe the headers will make it sound better(Thorley) Link to comment Share on other sites More sharing options...
Airrun2002 Posted September 23, 2004 Share Posted September 23, 2004 Theyll also give you more power. Link to comment Share on other sites More sharing options...
ChromoTech Posted September 23, 2004 Author Share Posted September 23, 2004 Or I could run 3in. pipe all the way to the muffler and convert to dual exhaust 2in. and dump it off before the rear tires. Link to comment Share on other sites More sharing options...
Airrun2002 Posted September 23, 2004 Share Posted September 23, 2004 Im gonna do dual all the way back including new headers and flowmaster mufflers i am also leaving the cat off. Link to comment Share on other sites More sharing options...
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