Stillen Headers + Berk HFCs self-install report

wstar · 03-28-2009, 08:54 PM

Final update on this. I've re-torqued everything and put in the new O2s. The header bolts were fine. The only bolts that really seemed like they needed a re-torque were the header<->cat flange bolts (I guess the gasket Berk supplies kinda burns in and gets thinner once heated). There are still a couple of points along the RPM range where I'm getting some rasp or vibration of some kind, but I've eliminated the possibility of any leaks. I think it's just the stock catback not coping so well with the new headers/cats. Other than when it hits those vibration points, it sounds awesome so far. I'm sure everything will get worlds better with the Stillen catback in place.

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03-28-2009, 08:54 PM	#11 (permalink)
wstar A True Z Fanatic Join Date: Mar 2009 Location: Houston, TX Posts: 4,024 Drives: too slow Rep Power: 3595	Final update on this. I've re-torqued everything and put in the new O2s. The header bolts were fine. The only bolts that really seemed like they needed a re-torque were the header<->cat flange bolts (I guess the gasket Berk supplies kinda burns in and gets thinner once heated). There are still a couple of points along the RPM range where I'm getting some rasp or vibration of some kind, but I've eliminated the possibility of any leaks. I think it's just the stock catback not coping so well with the new headers/cats. Other than when it hits those vibration points, it sounds awesome so far. I'm sure everything will get worlds better with the Stillen catback in place.