we have the r-tech hi-flo cats on both nismos but will be going with the tp's from aam this coming month i believe. they do alright haven't had any issues like eric has been having though.

 

My car goes into a funky modes like every 6 months when I am hard on the gas, ac running, then stop suddenly..its start vibrating like the fuel and timing are off, but unlike you mine stops after 3K rpm...

hmmm

I just cut the car off and back on then it stops...I think the dang ECU's are so smart, they fool themselves sometimes....lol.

 

yup.... did you just fill up... water in gas?

 

damn dont you hate it when a new mod causes problems?!

 

Hell yeah, especially when everything is doing fine before hand!

 

Get kinetix cats or crawford ones :P

Sucks to hear your problem.
OH yeah, post some pics of the Z

 

Sounds like you should have bought my Random Tech gaskets. https://my350z.com/forum/mid-atlantic-marketplace/358772-f-s-new-random-technology-gaskets.html

(JK, I know gaskets would fix anything, but good luck with finding out the problem)

 

Hahaha, well, my test pipes go back on tomorrow, so we'll see what the deal is. I'm getting paranoid. Heard a noise on my way home today, sounded like a clunking coming from my rear wheel

 

that was prob a peice of the honey comb coming out yea eric it def sounds like the cats arent flowing good enough for the engine at anytime if the honey comb inside the cat gets fawked up it limits the flow of the exhaust

 

Test pipes are back on, and everything is good

With the exception of wearing through my flex pipes the other day haha.

 

^good to hear.

 

yay!

 

Eric it is def the cats as just before mine blew out my car did about the same thing yours is doing.Oooops posted to late.

 

Yeah my car is running fine now thanks man

 

good to hear bud

 

yea right.

eric forgt to tighten down his lug nuts. BHAHAHAH

LOVE YOU.

 

Tighten them nuts!