Moparts Tech Archive
Mufflers Q'sWho makes the quietest 3-1/2" mufflers?
I know that "3-1/2 exhaust" and "quiet" is an oxy-moron, but this time around I'd like to be able to talk to my passenger instead of shouting to them while I'm driving my Duster. The 3" Straightline muffs made great power and sounded great outside, but the interior sound level at cruise was a little more than I wanted. Any other options out there?
I've got a complete TTI exhaust system on my Coronet. It's 2-1/8" ceramic coated headers to a 3" h-pipe with dynomax 3" Super Turbo Mufflers to chrome tips at the rear. For being a 528" hemi, it sure is quiet. I can easily talk with a passenger while cruising.
hey Dave, you got those muffs you have on the car now from where again? They sounded awfully good, and I'm debating on using them for my charger
moparguy, I bought them from Scott Brown at www.racemufflers.com
thats a good question,being able to hear yourself think is not over rated.
I think the location of the exhaust exit has a big impact on what the sound level is inside the car. Dave, did you have tail pipes all the way to the rear bumper before?
Dave, I ran the 3 1/2 Hooker Aero Chamber Mufflers on my 496 motor in my cuda. I had them come out just like your car is. They did have a good sound to them, but not to loud. Don't expect to talk to the drive-threw person when getting somthing to eat with the motor on. But they are quiet for the street.
I had 3 1/2" flowmasters on my Duster that exited the same place as yours. They sounded great, but were plenty loud! Problem was could not get it on a lift w/out dropping the exhaust.
Just as 3 1/2" mufflers and "quiet" is an oxy-moron. So is, tin interiors and "quiet".
I am trying to install this 3" TTI exhaust system w/ 2 chamber Flowmaster mufflers. When talking w/ TTI they said that I needed slip connectors because of the shorter mufflers. I am working on a lift and the system seems to be the right length without the extra tubing. The big problem is that the driveshaft is hitting the mufflers. If I install the slip connectors in front of the mufflers, the mufflers hit the rear end. The left side seems to barely fit w/ the rear hanging (2 post lift) but the right side will not go together. I cannot install the muffler because of the driveshaft. Two days and I am very frustrated ie the earlier post of killing someone. Any help is truly appreciated.
Here are a couple of pics if it helps.
i see!! can you e-mail tti the pics? they need to make this right, hell you paid for the best system in the world!! make them fix it. btt
I have the exact some system on my challenger. I bolted it all up loose then took a pry bar pried the muffler over then tightened the bolts up. it's still close but seems to work.
I can't help with your problem but your pictures convinced me to go with the 2 1/2 inch system when I eventually put a TTI system on my car. Man that's tight!!!
When you get it fugured out post a pic again. That looks really nice! I plan on 3inch from my manifolds to the tips.
Mike D. do you have the slip connectors in your system? I can't seem to find a place for them and am wondering if they will change a dimension that will give me more clearance. Thanks and I will post more pics as I go. The 3" are huge and probably not quite necessary but the sound will be great. I would have taken to shop, but want to support the companies that support us. Bought the kit from Olsen Dodge. Thanks for the discount John. Mike
I got the 3" on my cuda with dynomax.When I put it on I started from the back to the front.Hang it loose get it were you want it then tighten the bolt up.I had to trim about 2" off one of the collector.I am useing headman headers.Nice looking ride you have there.Do you have any shock on yet? Your drive shaft may be hanging down because you have it up on the lift.I will say it close to my drive shaft.
I have the same system on mine using the TTI Headers also. I had the same issue. You have to keep everything loose and have a second set of hands to pry it away from the driveshaft and keep the brackets straight and then tighten them. Mine even came loose once and the driveshaft hit one of the mufflers. Went through the whole process again and it has stayed there since then.
I plan on calling TTI this A.M. Will keep you guys updated. Anyone else w/ 2 chamber Flowmasters and one of these kits? Still looking for where the slip connectors go. Mike
Well, I spoke to Sam at TTI this morning. Very pleasant guy and also helpful. He said that the slip connectors are supposed to go before the mufflers. He also said that they have had a couple of Cuda's that for some reason they had to cut two inches off of an exhaust system. On those two cars they even went as far as to try the prototypes which were also too long. He said to be sure the tailpipes were centered over the axle and it may be easier to start from the back and work forward ensuring correct tip location. As far as R/L collectors, it is only w/ the 1 7/8" headers. The flowmaster mufflers are 4" shorter than the dynomax and that is why the slip connectors are required, but again in my case and as he has seen they aren't needed now. As far as the driveshaft, he did say it was tight and in the Challenger on the website they had to cut and reweld the inlet on the muffler because the Flowmaster is also narrower than the dynomax and this puts a little strain in the system. I plan on putting it back on the lift Friday and having a local muffler guy look at it to get his recommendations and possibly bend one pipe a little. I suggested to Sam that they include better instructions with the kit and he agreed that they would be helpful to the bolt on crowd. I'll try to keep this near the top or repost next weekend. Mike.
Well, I didn't get a chance to work on it this weekend, too busy with the other cuda welding on lower 1/4's. When I do get it back on the rack I'll post an update for those who were watching. Mike
Does your lift [where you took the photos] pickup under the frame or the wheels? The reason I ask is that if it picks up by the frame, remember that your rear diff. is several inches lower that it would be any other time, so the closeness of the mufflers to the drive shaft wouldn't be a problem.