Quote:
Originally Posted by ECONORAM
BZP, my jury is still out on wrapping exhaust pipes. I've seen some racers do it, others not. I tried it on a set of 4-2-1 headers on my 84 Jetta, and it seemed to weaken the metal. Broke them at the weld joints. Weakening was also a complaint I read somewhere on the Internet (so it's gotta be true!).
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I did finally git to measuring the temps in the bed during a hot day drive with Dark Aero in tow. Temps only rose up to 135°F on a 2 hour drive in the middle of the afternoon. My passenger floor board (just right above the catalytic converter) usually sees about 90°F to 100°F temps.
I'm looking at DEI's Titanium (colored) lava rock based exhaust wrap instead of the standard fiberglass stuff. I've already used some on my AC line along with some pipe insulation to keep the AC vents temps as low as I can git them. I also installed a misting system with a 15 gallon water reservoir to mist on the condenser. Right now, my AC vent temps are about 50°F below ambient!
https://amzn.to/2RBAqR2