muffler choice for t91 street car?
muffler choice for t91 street car? what choices do i have for a no restriction muffler on a t91 street/race car that will have full exhaust out the back? Its 5in just past the k-frame and i will step down to 4in out the back. I have a very lopy cam and want the car to be as quiet as possible with out any real performance loss. Are some of the high dollar muffs like borla any quieter, or just better constructed? What are some of you big turbo guys using?
I am going to run an 18" bullet on the I section location, and a 22" magnaflow in the stock location. My DP is 4" (with a cut-out) and will break down to 3" to stay extra quiet after the cutout!
i dont think you will find a quiet 4" muffler.
the way i have mine its 4" off the turbo, then to a 4" bullet style muffler, thenn steps down to 3" and goes over the axle to a 3" catback. in race mode i have the 3" sections removed, or might put a 4" electric cutout later, then in quiet srteet mode it goes to the 3" catback
the way i have mine its 4" off the turbo, then to a 4" bullet style muffler, thenn steps down to 3" and goes over the axle to a 3" catback. in race mode i have the 3" sections removed, or might put a 4" electric cutout later, then in quiet srteet mode it goes to the 3" catback
Originally Posted by smokinHawk
i dont think you will find a quiet 4" muffler.
the way i have mine its 4" off the turbo, then to a 4" bullet style muffler, thenn steps down to 3" and goes over the axle to a 3" catback. in race mode i have the 3" sections removed, or might put a 4" electric cutout later, then in quiet srteet mode it goes to the 3" catback
the way i have mine its 4" off the turbo, then to a 4" bullet style muffler, thenn steps down to 3" and goes over the axle to a 3" catback. in race mode i have the 3" sections removed, or might put a 4" electric cutout later, then in quiet srteet mode it goes to the 3" catback
Only down fall is the extra weight of 2 rather large mufflers and the over the axle piping weight. **** it......nothing 20 psi won't over come
Trending Topics
PSJ, how far back is your exhaust run? I plan to run my 4 inch exhaust back to the axle and dump it. I dont mind a loud exhaust being its not my daily driver by any means. I just dont want Johnny Law giving me a load of crap everytime I come out eigther.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Originally Posted by wickedred
PSJ, how far back is your exhaust run? I plan to run my 4 inch exhaust back to the axle and dump it. I dont mind a loud exhaust being its not my daily driver by any means. I just dont want Johnny Law giving me a load of crap everytime I come out eigther.
We can get away with alot in Bowling Green. I am looking for as little back pressure as possible after the turbo. I am definatley going with the 4 inch to at least the axle. I thought about going over the axle all the way to the back of the car. Who knows. I have been around alot of 4 inch Mufflex cars that were loud but not unbearable in my opinion.
Originally Posted by Dragframe
damn that is still too close to the ground for my liking...
And wikedred......the longer you have the 4" pipe, the more back pressure it will create. You should just put a cut-out right after the k-member on the 4" section, and then break it down to a 3" that runs to your muffler. Or whatever you want I guess, lol!
I already have all the 4 inch pipe and 16 inch long 4 inch in/out dynomax bullet. Hell I was going to just dump the 4 in down pipe right off the turbo. You know, an entire 2ft worth of exhaust. Thats a little extreme for the street though.I may out a 4 inch cut out in there righ past the k-member. Un cap it at the track for that little extra, but it's all gonna be 4 inch anyhow.
We swapped out the 4" Dynomax bullet for the 4" Splitflow, it's still pretty loud though it sounds deeper and a little more refined. I'll take a vid when we go to the track.
Looking at pics of NA$TY-TA's setup, he is doing the same, 4" DP to a bullet and dumps before the axle, clean and simple. Is a cutout really neccesary with a 4" system like that?
i run 4" all the way out, with 2 bullets. one in the CAT area, and one right before the axle (on the GN) and its very quiet. i drive it all the time, sounds really good too. just remember the longer the tailpipe after the muffler, the queter it will be.
Originally Posted by DanZ28
Looking at pics of NA$TY-TA's setup, he is doing the same, 4" DP to a bullet and dumps before the axle, clean and simple. Is a cutout really neccesary with a 4" system like that?
I dont see a need for a cut-out..... a bullet muffler really isnt even a muffler.....
It just has some baffles in it to stop some sounds waves.....
I live with mine even though its loud..... if ya want it quieter then run it all the way out the back...... i could see then maybe a cut-out could be used....
Kyle