TRT or Jose Advice on STS Muffler Placement
Need Advice on Muffler Placement with STS Need advice as to where to place the muffler on a STS system and why.1) Place the muffler before the turbo before the axle or 2) Place the muffler after the turbo bolted as close as possible to the exhaust side of the turbo.Which position would give me more power and why?What type of muffler (glasspack,spiral etc.) should I use for least amount of noise (do not like noise) and most amount of power. 
Originally Posted by Slowhawk
I'd run stock Cats and put a Bullit in the I pipe(Loudmouth style).
I Pipe Muffler Placement
Originally Posted by longrange4u
Due to how loud mine got when I removed the cats (Had to because the 2-step) I have considered this.... Thinking same thing "Bullit in the I pipe"
TRT or Jose Advice on STS Muffler Placement Billy or Jose do you have reasoning as to where to place a 12" bullit (3 in and 3 out) glasspack on a STS system.Saw and heard one bolted to the exhaust side of a STS 67 turbo with a 12 " exhaust pipe after the muffler dumped just below the rear bumper.Sounded quiet which is what I am looking for.Some people have said you can put the muffler before the turbo in the pipe before the axle and some people have said it must go after the turbo and if so how far past the turbo should it be placed.Car is stock 02 SS M6.Would appreciate your advice as to placement and type of muffler (glasspack bullit,spiral flow etc.) and expected perfomance gains or losses,if any.
TECH Addict
Joined: Nov 2001
Posts: 2,659
Likes: 1
From: Bellevue, Wa
I have dual bullets after the turbo.
Most definetly quiets it down considerably.
I don't notice any difference in spool or power with or without the mufflers.
I built my exhaust system to be modular and removable so at some point I will dyno the difference between exhaust on and off in both power and spool time.
I also plumbed the wastegate in pre muffler to muffle that horrible shhhhhhhhhh sound it makes. Car sounds soooo much better now.
Magnaflow makes a round muffler as well that is packed and they offer even better noise control than the bullets.
Most definetly quiets it down considerably.
I don't notice any difference in spool or power with or without the mufflers.
I built my exhaust system to be modular and removable so at some point I will dyno the difference between exhaust on and off in both power and spool time.
I also plumbed the wastegate in pre muffler to muffle that horrible shhhhhhhhhh sound it makes. Car sounds soooo much better now.
Magnaflow makes a round muffler as well that is packed and they offer even better noise control than the bullets.
I put a dynomax bullet in the spot shown in the picture. My turbo is modified a little bit and moved towards the drivers side of the car a little more than that pic though. It really help cut out the rasp and quited it down quite a bit.
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TECH Apprentice
Joined: Feb 2005
Posts: 319
Likes: 0
From: Glen Allen, VA
Originally Posted by Blackbird
I have dual bullets after the turbo.
Most definetly quiets it down considerably.
I also plumbed the wastegate in pre muffler to muffle that horrible shhhhhhhhhh sound it makes. Car sounds soooo much better now.
Magnaflow makes a round muffler as well that is packed and they offer even better noise control than the bullets.
Most definetly quiets it down considerably.
I also plumbed the wastegate in pre muffler to muffle that horrible shhhhhhhhhh sound it makes. Car sounds soooo much better now.
Magnaflow makes a round muffler as well that is packed and they offer even better noise control than the bullets.
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Verdad Gallardo If you still have the cats on, it will be quiet. If not, we have done a couple with the bullet mufflers in the "I" pipe. It helps some, but will still be a little louder than with the cats. I would try and use a good quality part. You wouldnt want anything to come out and get eaten by the turbo. If you want, p.m. your number. I have a car in the shop now with LT's, a bullet and turbo if you think you can tell anything over the phone. I doubt it will help you much over the phone.
TECH Addict
Joined: Nov 2001
Posts: 2,659
Likes: 1
From: Bellevue, Wa
My $.02 even with cats on which I do, it's way too loud without a muffling system.
The young guys might like it but if you want to hold a conversation in your car or not get a headache on a long drive your going to want to build an exhaust for the system.
The young guys might like it but if you want to hold a conversation in your car or not get a headache on a long drive your going to want to build an exhaust for the system.
MufflerPlacement
Originally Posted by trtturbo
If you still have the cats on, it will be quiet. If not, we have done a couple with the bullet mufflers in the "I" pipe. It helps some, but will still be a little louder than with the cats. I would try and use a good quality part. You wouldnt want anything to come out and get eaten by the turbo. If you want, p.m. your number. I have a car in the shop now with LT's, a bullet and turbo if you think you can tell anything over the phone. I doubt it will help you much over the phone.
Originally Posted by tmister
Cats are on the car.Billy are you saying I should place the muffler before the turbo rather than after the turbo when you are referring to the I pipe.Is the I pipe the one located after the Y and before the axle and if so why place it before the turbo.More power,better performance,less noise etc.?
Muffler Placement
Originally Posted by trtturbo
Right after the Y. I'll try and post a pic or two today.
The biggest reason people put it before the turbo is room. Its a little harder to use the muffler in the shorter pipe after the turbo. It would be a problem if anything got into the turbo, so that is something to consider. I have not heard of any noticable difference is performance using the bullet in the "I" pipe. You will have pleny of exhaust flow to spool the turbo up.
