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Old 01-09-2012, 03:10 PM   #1
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Heat shield rattles with exhaust cutout/diverter

Love the sound of open header exhaust with my NoWeeds, but am not liking the noise coming from the heat shield vibrating at certain RPMs. Tried bending shield to cut down on the resonance... helped a bit. Vibrations are starting to stress crack the shield. Am thinking of removing it, or at least cutting sections out but don't want heat transferring to the area above. Was thinking Dynnamat extreme, but have no experience with that material. Any ideas?
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Old 01-09-2012, 03:35 PM   #2
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paint it with rubberized undercoating paint?
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Old 01-09-2012, 04:02 PM   #3
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It's close to exhaust... would melt or burn.
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Old 01-09-2012, 05:30 PM   #4
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Had the same problem with my GTO. Drove me crazy! Ended up buying some header wrap. Cutting it to size folded and wedged it behind the heat shields. Worked like a charm.
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Old 01-09-2012, 08:53 PM   #5
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Good idea... got to look into that.
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Old 01-09-2012, 09:05 PM   #6
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Hmmm havent noticed on mine but i may just be deff
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Old 01-11-2012, 02:11 PM   #7
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Rattle was hardly noticeable till I pulled out rear seats... is much louder now without seat to dampen noise. Pulled out rear seat to see if a pair of track tires would fit.
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Old 01-14-2012, 10:11 PM   #8
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Well i gutted cats and now i hear some drone rattlecan stuff!
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Old 01-15-2012, 04:34 AM   #9
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So that's what that noise is! I have the qtp cuttouts and I've been hearing this for a while now. It almost sounds like a loose washer on a bolt so I've been making sure all my bolts are tight in the center consol since that's where it's coming from but they were all tight. It was driving me crazy, still is, that I couldn't find where it was coming from. And it's only when the cutouts are open and at certain RPMS. I'll have to get under there and check it out. Is it one particular spot that you found where it's happening? I'd like to stuff something in there as well. Let me know what you find and maybe take a picture of the area would be great.
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Old 01-15-2012, 12:21 PM   #10
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hey mike let me know what you use so i can install it before i install mine should be here on thursday or friday .
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Old 01-15-2012, 07:46 PM   #11
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Old 01-16-2012, 09:12 AM   #12
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I used some header wrap like CAL suggested... wedged it behind heat shield. Definately helped.
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Old 01-16-2012, 11:35 AM   #13
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what part of heatshield?
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Old 01-16-2012, 12:33 PM   #14
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Just ahead of tunnel cross brace.
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