ARK GRIP + GTM RTP = :mad:

Splinter

by rattling and clunking you mean metal to metal sound??

ARKS x pipe section needs to be lifted/jacked up during install over the cross member before tightening any bolt, otherwise it will sometimes rest on it and cause rattling/clunking. a proper reinstall might fix it.

as far as hissing or howling sounds, its the test pipes adding extra exhaust flow that the ark x pipe cant handle.

and btw, post some pics!

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2011 Gun Metallic 370Z Base w/ Sports Package 6MT
Mods: HKS Hi-Power, Test Pipes, Black Z1 Stillen G3s, Swift Springs, 20mm spacers F&R, AuCar 13.6' Android Screen, Backup Camera, G35 Homelink, Rear fog

BLM

I'll definitely tell them to do this. I read about it before. I used to get all my work done at a speed shop that went out of business but I trusted them. This dealership was fine but I wasnt really allowed to be in the service area for insurance reasons. If I had been I would have reminded them about this. Hopefully a re-install plus some sealant will reduce the hissing and clunking. And yes it's definitely metal on metal and sounds like it's coming from the rear end of the trans which is where the exhaust would be/is hitting the cross member.

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K&N // GTM // BERK

BLM

Just drove it around a little. It even rattles at idle but gets very loud in every gear around 2500 rpm. It sounds like a metal on metal grinding noise and seems to be coming from the passenger side. I can deal with the hissing and whistle noise I just can't figure out WTF it's hitting as it seems to have a good inch of clearance above the cross member.

I really don't mind the hissing and whistling sounds. I'll either get used to it or replace the test pipes with stock cats. I just need to figure out what the pipes are hitting, and why it appears to be coming from the passenger side and is loudest between 2500 and 3000, and now under load AND decel

EDIT: Soundclip
Memo.m4a

This is second gear accel up to about 3500 and back down. Note the loud rattling on decel. Helps to turn speakers up.

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K&N // GTM // BERK