Roadster with Invidia Gemini and CNT HFC, videos and pictures

370Z JT · 11-27-2010, 04:37 PM

Hey. I get that same metallic rattle when the RPMs drop. Is that from the exhaust? or the HFC?

chops · 12-05-2010, 12:47 PM

Quote:

Originally Posted by 370Z JT

Hey. I get that same metallic rattle when the RPMs drop. Is that from the exhaust? or the HFC?

that would be the HFC's. or what some people refer to as deceleration hiss. apparently its always there, just more audible with an HFC.

quick question, my ERZ/CNT HFC makes a super annoying rattle when accelerating at full WOT. does this happen to you too? it probably happens somewhere around 4k rpm. its pretty damn annoying and im going to have to get rid of these things if it continues.

ERZperformance · 12-05-2010, 07:26 PM

Quote:

Originally Posted by chops

that would be the HFC's. or what some people refer to as deceleration hiss. apparently its always there, just more audible with an HFC.

quick question, my ERZ/CNT HFC makes a super annoying rattle when accelerating at full WOT. does this happen to you too? it probably happens somewhere around 4k rpm. its pretty damn annoying and im going to have to get rid of these things if it continues.

Did you check to make sure the 02 cap is not loose.

chops · 12-05-2010, 11:52 PM

Quote:

Originally Posted by Nissangeneration

Did you check to make sure the 02 cap is not loose.

i dont want to hijack this thread, but i actually used some loc-tite blue before i tightened the extra wideband bungs. they rattled initially after a day of driving, so i removed them and added some loc-tite, they wont be moving anymore. the problem is that the HFC itself rattles when accelerating on full load - ie. wide open throttle. if i slowly let it rev to redline it wont rattle...all bolts and sensors are tightened as well.

YouTube - IMG 0347

from 0-25 seconds, its a slow rev up until about 5-6k rpm. at 26 seconds or so im just jamming the throttle to the floor...the rattling is very noticeable!

11-27-2010, 04:37 PM	#1 (permalink)
370Z JT A True Z Fanatic Join Date: Jan 2010 Location: United States Posts: 2,905 Drives: 370Z PW 7AT Rep Power: 380	Hey. I get that same metallic rattle when the RPMs drop. Is that from the exhaust? or the HFC? __________________ Click for My Journal Top Secret \| EVO-R \| Fujimura Auto \| Shine Auto \| Seibon \| MRWorks \| Swift \| SPC \| SSR \| UpRev \| Project Kics \| NST \| Titek \| Eibach \| Nismo \| Whiteline \| Quaife \| Invidia \| Fly1 \| CF Element \| Carbon Signal

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