So I'm getting ready to complete my exhaust finally ... I have warp speed y pipe with high flow cat ... Think bout doing 2.5 in mandrel bent b pipe (or should I just do 2.25in for backpressure?) and now I'm trying to decide on a muffler. I want to keep sound to a minimum so I used the search feature and came across posts where people were choosing dynomax super turbo muffler because it was the quietest performance muffler ... Also saw people using oem mufflers from the 4thgen and 5thgen.

So I go to dynomax website to see if I can hear the super turbo muffler in action when I came across they're new line called the vt... This muffler is supposed to cancel out drone and only make exhaust sound when the car should? My question is has anyone seen/heard/installed this vt muffler on a 4thgen? Also what would be my best choice muffler wise for least sound and best performance?

 

I'll answer the diameter question.

Your fine going big.
Even 3" tubing is fine.

No need to worry about back pressure.
Our VQ's love to breath and exhale.

 

The only issue I heard about these is that the door will make a vibration clacking noise at idle. Not sure if they fixed that issue or not

Matt

 

i have one - it's great