I'm loving the extra power of a test pipe but I'm over the extra noise. I've heard that Megan makes a good 3" resonated TP. Any other manufacturers? I'm looking for the quietest so, I would assume, the TP with the largest diameter.

 

What cat back are you running? This is what I have on the Evo 9:

http://www.logicperformance.com/data...roducts_id=662

This testpipe is a resonator pipe as well, it acts as a low restrictred tubular muffle kind of like the cherry bombs/bazookas that you get in pep boys or Autozone but 100000000 times much better finished.

Carlos

 

I'm running a Tanabe 2.75" downpipe and an RS*R ExMag cat-back exhaust.

 

Your exhaust is going to make more of a difference than a resonated test pipe. Yeah a resonator will help but the change in volume may be very small. I went through this with an HKS Hi-Power and couldn't stand the thing after a week.

 

How is the sound inside the car???? i'm sure its louder than a hfc but its not so annoying as a regular tp right???

 

I'm running the AMS 3" Resonated test pipe, it supposedly keeps the sound level lower...

 

Injen full 3in TBE. Very quiet in the car, at idle, and cruising

 

If you want to talk about mufflers and stuff, that will make a difference sound.

A test pipe is really just a pipe with a perforated straight through design.

The rear section makes more of a difference.

 

if its the cat-back that drives the sound then howcome when i put a tp w the invidia cat-back the sound was way 2 loud inside the car even on idle. I got rid of the tp then got a 3'' dp and a 3'' hfc same cat-back and now the sound is not loud at all. Can any1 shine some light on this because now i want louder but not like before =)

 

The difference is that you have a high flow cat in there...which deadens sound a ton.
If you threw 3 different types of resonated test pipes on there, I doubt you would find a measurable difference between them.

The situation you described is not really a "controlled" example/test as you changed out a bunch of things and found a difference in sound.

My friend just got a Tanabe Medallion Touring and the thing is silent.

 

Why not look into a 3" RRE Rally Cat.

 

I ran an RNR resonated TP. Worked great, didn't smell bad either with full 3in non resonated catback.

 

Rally Cat? The kind that sits on a fence and keeps you up at night with it's yowling?

 

I have the AMS TBE and originally had the HFC. I then switched to the resonated TP and its quite a bit quieter, especially inside the car, than the cat.

 

Why would he want that? The rally cat is nothing more that a straight pipe with cat heat shields.