Nissan 370Z Forum - View Single Post

fryzia23 · 08-01-2011, 09:39 PM

This past week Ive installed ark exhaust on my nismo. Deffinitely looks and sounds great but on the deaccelaration between 3200-2000 rpms theres this whistling noise comming from the x-pipe that is very annoying especially at night. After installing it I found out its because of the hfcs(erz) that I have. I know that ark is working on a hfc that will eliminate the noise but it will take some time before its finished. So my question is if anybody got lucky and has a combo of hfc or test pipes with ark grip exhaust that eliminates the whistling noise?

08-01-2011, 09:39 PM	#1 (permalink)
fryzia23 Enthusiast Member Join Date: Dec 2010 Location: new jersey Posts: 452 Drives: 2011 MB 370Z NISMO Rep Power: 1246	ark grip/hfc/test pipe combo This past week Ive installed ark exhaust on my nismo. Deffinitely looks and sounds great but on the deaccelaration between 3200-2000 rpms theres this whistling noise comming from the x-pipe that is very annoying especially at night. After installing it I found out its because of the hfcs(erz) that I have. I know that ark is working on a hfc that will eliminate the noise but it will take some time before its finished. So my question is if anybody got lucky and has a combo of hfc or test pipes with ark grip exhaust that eliminates the whistling noise?