I took off the TP's and put the cats back on today. I'm glad I did. The exhaust note is perfect now. No rasp or rattle sounds. No fume smell. Sounds exotic I must say. A little quieter of course but the exhaust note is the same as with the TP's.

How much more noisy was it on your setup?

Did you notice a power loss going back to stock cats? any gains in TRQ with stockers

Quite a bit. I liked how loud the tone was, I just couldn't handle the loud rasp/tin sound that went along with it. I could hear it coming from under the car as well as out the back. Some people don't mind it though. And I had to keep my better half happy also if you know what I mean.

I gots F.I Non-Resonated Test Pipes. I love them, makes the car sound so unique with the FI Non-Resonated CBE. Yea I wish the rasp was gone but hay, if thats what she sounds like breathing free then so be it.

I have the Top Speed CBE. A different brand may not be as bad. I love the note it has though.

I guess I'm alot different. I love loudness, rasp, and smell of fumes. Like being at a race track. I get off on this. Guess I'll be the blacksheep.

Ive got the Invidias definitly loud alittle rasp but got use to it.Love the sound takin off, maybe power gains but havent noticed .Since Im still breakin her in keepin my revs low.She only has about 900 miles LOL...

Pros: 15whp on my Nismo Catback

Cons: Rasp at 2500rpms ~ and up top. Mild fumes.

Going back to stock cats myself, already made up my mind.

Pros: 15whp on my Nismo Catback

Cons: Rasp at 2500rpms ~ and up top. Mild fumes.

Going back to stock cats myself, already made up my mind. Anybody interested in a used set of stainless test pipes from Z1 Motorsports?

Yeah I went back to stock cats today. I really didn't want to because of the power gains but I didn't like taking off next to cars and hearing the rattling rasp. Live and learn. I'm just glad I didn't spend $200 on them. Still sounds great with the y-pipe and Top Speed CBE. Especially from 4k and up.

+1

top speed test pipes
 

I like the performance difference they made, the car feels. Smoother -less heavy. I got them from deluboz.com I payed 127 shipped, I think its worth it.

Raspy with stock exhaust.

i have MXP resonated test pipes and MXP cat back exhaust. love the sound, the rasp that it has comes on around 4k, so not annoying for daily driving.

hate the carbon that comes out, i need a tune...

my review and video... MXP Full Exhaust on Nissan 370Z | Jade Motorsports

Some of you guys took your test pipes off and put the restrictive heavy stock cats back on????? STOP!!!!!!!!! The rasp is not that bad and the only time I smell the fumes is when I stop at a light.

I am waiting on my next set - I just posted a set for sale from my buddys G