ok muffler time

think a 3 inch exhaust is to small or keep it the same as the collector size

3-1/2" Hooker Aero Chambers worked well on my old Duster. They are a chambered straight through design. Not too loud, until you get on the happy pedal.

My car had a three inch system from the 3.5 inch collectors straight back back to the Magnaflow 14x7x3 inch side inlet with 3 inch center outlet oval muffs mounted behind the rear end at the rear bumper You can see them if you look real closely, the pipes run from the fenderwell headers straight back under the rocker panels and then under and behind the rear wheels up to the muffs The car has ladder bars and coil over rear suspension with the stock gas tank so there was no room to run the system under the car and over the rear end housing. The muffler shop ran them like you see in the picture, the side pipes hide the ladder bar and so on The car(518 C.I. pump gas wedge) ran high nines on pump gas motor only with the exhaust system hooked up and the air cleaner on I got lots of comments on how nice the car sounded and ran at the track

I have tried the 3 1/2" flowmaster race mufflers,Dynatech splitflows,Hooker Aero chambers and the 6" oval Magna flows. The Flowmasters were the most quiet out of them all but cost 1.5-2mph. I have been the fastest with the Aero chambers and they are not to bad with the noise either.

Leaving out design and cost, the largest internal volume has the lowest noise and lowest power loss.
If you have to be in the car more than 1 hour you'll throw away your Flowmasters.

Even a smaller diameter H-pipe will do some good, if you can squeeze it in. It's more about connecting pulses than flow, in my book.

R.

I have yet to talk to Hanz but HMF here in Cleveland makes custom muffs for bikes and I think they would make some for cars but for $$ savings you may want an off the shelf.

has anybody tried the collector inserts? by them selves or with exhaust?

They`re way loud...............I run bullets on the street/track AWESOME sound................

glad I asked I almost ordered a set

If your looking for quiet I would go with either magnaflows, ultra flows, or the pypes racepro? I think they are called. Prosport had them if I recall on a his 9 second dart sport, said they were quiet and performed well. Maybe he'll see this and chime in.

Me, I like loud...I went from Borla XR-1's to dynomax bullets because I wanted louder lol...Street car, I drive it for over an hour at a time, noise does not bother me. Then again, I am only 24 and starting to notice some hearing loss

lol noise doesn't really bother me but drag week is 1000 to 1200 miles and my dad wants to go along soooo

SpinTech

I have 3 1/2" pipe coming off my fenderwell headers and then into Magnaflows and then dump out in front of the rear tires. Almost like a set of side-pipes, but tucked under the rocker panel. They are loud, but not at loud as the 3" Flowmasters I had on before. Those were just plain annoying. These have a low resonance to them. Plus when I go to the track, I just leave them on. I figure the only increase in performance would be in the weight savings.