Quote:
Originally Posted by JLarson
Did you leave the heat shields on above the cats? They don't always play nice with aftermarket parts.
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Yea. We def left those on. Whatever the noise is, isn't a huge deal. I don't even think it was rpm dependant. Just random throughout the night and not even very frequent. One thing is for sure.... The car is actually quieter with resonated Hfc and FI 18 inch exhaust as opposed to just axle backs.