Nissan 370Z Forum - View Single Post

SophiaZ · 02-07-2010, 09:44 PM

I have the Stillen HFC's and they took away back pressure and that left me with a hiss. I've seen on the Fast Intentions site for their HFC's and that said they free up back pressure. Can anyone say that their's don't have that hiss? I'm going to get the F.I. exhaust but want to make sure that both the exhaust and HFC's would be better than my set up now. Any help would be appreciated.

02-07-2010, 09:44 PM	#1 (permalink)
SophiaZ A True Z Fanatic Join Date: Dec 2009 Location: South Jersey Posts: 1,463 Drives: 2020 50th anniv 7AT Rep Power: 6732	Who makes the best HFC's without rasp? I have the Stillen HFC's and they took away back pressure and that left me with a hiss. I've seen on the Fast Intentions site for their HFC's and that said they free up back pressure. Can anyone say that their's don't have that hiss? I'm going to get the F.I. exhaust but want to make sure that both the exhaust and HFC's would be better than my set up now. Any help would be appreciated.