Bmurray350z

iTrader: (34)

I picked up some megan test pipes along with a stillen y pipe from a local recently. Installed them and the test pipe and y pipe (passenger side) are hitting under the floor pretty bad. It causes a really annoying rattle and almost sounds like someone with a hammer under the car while sitting at idle.

wanted to know if you guys had any suggestions short of getting a different set of test pipes. they did NOT hit on my friends car, however he had stock headers. my car came with some stillen headers.. but, the oem cats didn't hit at all either.

I tried prying down on the y pipe and re-tightening it but it did not help.

any ideas? may just need to get a set that utilize the cat bracket

here are some pics (ignore all the gasket maker crap prev owner had on there)

as you can see it is mainly hitting that little black brace.

nizmo_0385

iTrader: (5)

Its probably the combination if the two. Not all exhaust pieces play nice together on these cars. I had the motordyne xyz not sit right with ebay test pipes but fine with art pipes and oem cats. The same test pipes fit fine with hr y pipe. Maybe have an exhaust shop heat in the area and pry down. I did that on an ebay exhaust and all was well