I'm about to order the Invidia divorced WG catted downpipe w/ extra o2 bung for my '08 wrx and I'm wondering if anyone has ever used exhaust wrap on a catted downpipe. Is it really worth it? If I do it I will probably use Design Engineering wrap from the parts store and a can of high temp...

In the next few week I'm going to be putting in an Invidia V3 DP. I was considering using heat wrapping on it. I've read you only really need to wrap the front half. Thermo Tec sells it in either 15ft or 50ft. My question is 2 fold: 1) is 15ft enough to wrap the front of the DP sufficiently and...