kylemorg
06-01-2007, 01:44 PM
FYI -- I went to Advance auto the other day and got a 45' roll of 2" header wrap. I then proceeded to re-seal the cat back exhaust flanges on my KORE catback and wrap the exhaust from the muffler all the way up to the second cat. :)
I read on the internet that it might improve performance slightly by keeping the exhaust gasses hot. I haven't felt any difference.
I've also read that it will increase the rate of corrosion of the exhaust. However, the car is already 5 years old, the catback probably about 4 (got it used) and there is very little sign of corrosion yet. The exhaust will probably still outlast the car. :redface:
The primary reason I did it was to reduce noise. Re-sealing the flanges on the exhaust helped quiet it, but it was still annoying during log trips at 3K rpm (~78 mph on the highway for hours). The header wrap quieted the exhaust resonation quite a bit. :D
I thought about wrapping the stock exhaust manifold, too, but I'd have to remove the heat shield, etc., and it's such a small part before the first cat, and it's only the stock header anyway, so why bother?
The upshot of this is that if you want to quiet your aftermarket exhaust a bit (and are not worried about corrosion), for about $45 for header wrap and some hose clamps you could try this method.
DO NOT WRAP YOUR CAT CONVERTERS, though -- they can overheat and destroy the catalyst bricks.:eek:
Edit -- Before anyone says "where are the pics?" -- I am not going to post pics of it. It's not very impressive to see, I did not take pics when I did it, and I am NOT going to jack up the car and crawl under it again just to get some silly pictures!
I read on the internet that it might improve performance slightly by keeping the exhaust gasses hot. I haven't felt any difference.
I've also read that it will increase the rate of corrosion of the exhaust. However, the car is already 5 years old, the catback probably about 4 (got it used) and there is very little sign of corrosion yet. The exhaust will probably still outlast the car. :redface:
The primary reason I did it was to reduce noise. Re-sealing the flanges on the exhaust helped quiet it, but it was still annoying during log trips at 3K rpm (~78 mph on the highway for hours). The header wrap quieted the exhaust resonation quite a bit. :D
I thought about wrapping the stock exhaust manifold, too, but I'd have to remove the heat shield, etc., and it's such a small part before the first cat, and it's only the stock header anyway, so why bother?
The upshot of this is that if you want to quiet your aftermarket exhaust a bit (and are not worried about corrosion), for about $45 for header wrap and some hose clamps you could try this method.
DO NOT WRAP YOUR CAT CONVERTERS, though -- they can overheat and destroy the catalyst bricks.:eek:
Edit -- Before anyone says "where are the pics?" -- I am not going to post pics of it. It's not very impressive to see, I did not take pics when I did it, and I am NOT going to jack up the car and crawl under it again just to get some silly pictures!