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Old 10-03-2017, 03:44 PM   #6
Red5
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Join Date: Mar 2016
Location: Nashville
Posts: 23

2008 Astra XR
Default Re: Throughts on Wrapped Header and TB?

So I went with fiberglass wrap (50 feet for $14.99 delivered from amazon.com) from aft of the cat to the mid-pipe muffler. It got everywhere and I was itching for days. Afterwards I got a tip from a local who said it should have been damp going on; in case you have never heard that either I advertise the idea here. If I had it to do again I'd get the "volcanic rock" wrap as it may shed less. Also, threading 50' of wrap around the pipe every time took about an hour and 15 minutes. I should have cut it into thirds.

It does seem to quiet the nagging resonance some more; there's zero discernable difference in power but maybe it's making the whole thing a fraction more efficient on my weekly 4 hour highway trips.
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