Technical Heat shield knocking?

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Technical Heat shield knocking?

Dominion

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I had an aftermarket exhaust fitted and recently there has been a knocking sound coming from under the car. I wondered if it could be the heat shield knocking against the tank.

Anyone experience anything similar?

Cheers.
 
I've found that due to the design of my supersprint backbox it hits on the exhaust hanger when going over some bumps and corners - might be the same thing. I remember some Schumacer stilos having a knocking noise from their back boxes.
 
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Stainless steel also expanded significantly more than mild steel and many places when making after market exhausts don't allow for this ..I had to take my car back to power flow for just that reason :rolleyes:
 
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