ARK GRIP + GTM RTP = :mad:

BLM

Most definitely. I'll insist they do a re-install with propping up the x pipe prior to tightening the bolts and adding a silicon sealant between all the connections.

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K&N // GTM // BERK

G37sHKS

sounds like a plan, but they should do it for free, dont pay anything, maybe 10$ for silicon but no more! its there fault, they didnt pay attention when they were installing your exhaust.

BLM

I'm not bad mouthing the dealer. They just didn't have experience with this particular exhaust. I should have told them to jack up the x pipe prior to tightening the bolts. Adding silicon sealant is something a lot of shops do but usually at request. I'll make sure they do this tomorrow.



Again thank u all for your input. It may seem like a minor issue but I don't make huge $$ so it was a big investment to purchase an exhaust plus a test pipe and pay for the labor so I know the value of a dollar and I think that a dealer/shop who sold me the parts AND installed them should make good on it if there's a problem. I certainly don't expect them to fix the hissing noise. That happens with test pipes I know. But the rattling is severe so I hope they'll go through the process of a test drive and re-install free Of charge.

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K&N // GTM // BERK

BLM

Thanks this is what I thought. I knew the hiss/whistling sound was from the test pipe. That's not my problem. I can live with that. The rattling is killer and that has to be from the installation.

What do u recommend for a re-install other than loosening everything and propping up the x pipe prior to tightening the bolts +/- silicon sealant?

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K&N // GTM // BERK

daisuke149

personally, I dont think silicone is all that necessary, best is as you mentioned, loosen it all up, then starting from the test pipes, tighten each piece one by one, holding them in position (generally up a bit, higher than where it should be as it would sag down a bit)

keep the hangers tigheted and in place though, those will help align the stuff as you tighten them.

BLM

Thanks bro. I'll make sure they do this.

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K&N // GTM // BERK

christian370z

Check by the passenger side exhaust can, there is a metal shield that it might be in contact with causing the rattle. I just had to bend mine back since it was touching the can of my FI exhaust and I know the Ark muffler would be in the same location.

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-320whp / 259wftlbs-
SP Rays -- RE-11s -- SpecialtyZ Tune -- Swift Springs -- Stillen 25R Oil Cooler -- Stillen G3 Intakes -- Berk HFCs -- F.I. 12" CBE -- Stillen Sway Bars -- Es14 Spring -- INGS+1 lip -- CF Spoiler -- GTR Start Button -- VLED Parking Lights -- PWJDM V2 shift knob

BLM

I'll make sure they do this too. The rattling noise is definitely coming from the passenger side.

Much thanks!

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K&N // GTM // BERK

daisuke149

also, the hiss is something all our cars have with any combo / exhaust.

The whiste, would shouldnt be super loud. if there is a loud whistler its an exhaust leak. If you still get a slight whislte and confirm no leak, its probably the crossover x-pipe in the ARK. maybe some header wrap on that section could help quiet it down.

BLM

Thank you everyone for your input!! Again, I'm not really concerned with the hiss/whistling sound. Its the rattling that bothers me. If u listen to the sound clip there's two decelerations that show what I'm talking about. It sounds like a metal on metal rattle and it's now present at idle and on hard acceleration (and deceleration most noticeable around 2500-3000 rpm). Again, this leads me to believe there is a prominent metal on metal contact that's causing the rattling. Hopefully this can be fixed with a re-install

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K&N // GTM // BERK

christian370z

Did you check if the heat shield is contacting the rear passenger side muffler? 10 bucks says that is the culprit, I just solved that same issue with my FI exhaust.

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-320whp / 259wftlbs-
SP Rays -- RE-11s -- SpecialtyZ Tune -- Swift Springs -- Stillen 25R Oil Cooler -- Stillen G3 Intakes -- Berk HFCs -- F.I. 12" CBE -- Stillen Sway Bars -- Es14 Spring -- INGS+1 lip -- CF Spoiler -- GTR Start Button -- VLED Parking Lights -- PWJDM V2 shift knob

BLM

How do I rectify this? Bend the shield back?

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K&N // GTM // BERK

christian370z

Yep, just bend it away from the exhaust. It bends very easily and can be bent back to where it was if you go back to stock, mine was touching the exhaust can but now has an inch or two of clearance.

__________________
-320whp / 259wftlbs-
SP Rays -- RE-11s -- SpecialtyZ Tune -- Swift Springs -- Stillen 25R Oil Cooler -- Stillen G3 Intakes -- Berk HFCs -- F.I. 12" CBE -- Stillen Sway Bars -- Es14 Spring -- INGS+1 lip -- CF Spoiler -- GTR Start Button -- VLED Parking Lights -- PWJDM V2 shift knob

BalanBro

I have the ARK with Berks. Thiss hiss/whistle is normal, the metal rattling is NOT. Sounds like a clearance issue with the install.

Also, I had a rattling right after my install too. It turned out that plug for the extra O2 bung on the Berk HFC was not torqued down properly from the factory and was rattling loose. Tightened it up and the metallic rattling was gone. Don't know if yours even has that O2 bung, but it's worth a look.

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2012 Mercedes C63 AMG P31 Sedan, ROW, aFe, Eurocharged Dyno Tune. 438WHP/415WTQ
2010 SOLD: 40th Anniversary 370z

BLM

I specifically asked them to use lock-tite on that bung and torque it down. I'll check again tomorrow.

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K&N // GTM // BERK