Well. I went down and met goerge from what used to be Momentum Performance, and now owns National Speed in Wilmington, NC. I bought what is verified to be the last ever produced brand new Momentum Performance Single Exhaust for the 350Z. i traded my Nismo for it and i couldnt be happier. I did the bumper tuck while i was in there. everything went smooth with the exception of on small thing. right after where my new piping bolts to my y pipe theres that cross member brace and it barely just touches that. we found something to putin between the brace and my piping, but im having one slight issue with that. when im sitting at idle and my fan kicks on, it vibrates the entire car. has anyone else had issues with their singles doing this?

Before- Nismo Duals

Brand new Momentum Single that i personally pulled out of the box and wrapping

Installed with bumper tuck-

 

Get some header wrap and continue to wrap till its a firm fit...should reduce noise...

 

it doesnt make any noise. its just because the exhaust sits on the spacer which sits on the cross brace when the car goes under any type of load it vibrates the whole car. but theres no noise involved

 

I had the momentum single. loved it. by far the best sounding single I have heard on the z yet. and yes the momentum single doesn't have the little flat section like a lot of the other single exhausts do. i had to just have someone push up on the y pipe/midpipe while you tighten it down and it helped a little.

see how the agency power has this little flat section:

 

Where you located? Still have the nismo? I need to borrow it potentially buy it if it sounds good with my PPE headers

 

i actually traded it to george from momentum/national speed for the single exhaust. sorry.

 

yea...where ever it hits wrap the exhaust...

 

I've got the momentum dual and it does the same thing. Just sold that though. Ordered the Tomei expreme ti single. Wondering if it'll touch as well.

 

from what ive seen the tomeis have the little flat spot on the mid pipe sectionso you shouldnt have an issue with it