Quote:
Originally Posted by Awox
I can't think of any. I'm not really an expert on this, but I'm pretty sure you want your exhaust to stay as hot as possible till it exits the vehicle so that it does not decrease in volume and cause torque loss from lack of back pressure.
Or something like that? I dunno.
Also I'm pretty sure that if it's raining out or you go through a puddle you can prematurely wear your exhaust parts due to warping. I once was told it was there for a very good reason, but I can't quire remember.
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I rang up an exhaust professional in Australia, The guy told me that the main reason that the heat shielding is on the exhaust is for regulation purposes when the cars are manufactured and/or if there are any flammable components 150mm away from the exhaust system.
Most new exhaust systems don't need heat shielding and the only advantage of taking the heat shielding off is the insignificant weight difference, crackling noises eliminated and it basically looks better.
Thanks for the quick reply
Cheers,
Jay
P.S. Why did you keep the heat shielding on your precats?