I have the same issue with my top speed true dual its like a replica of the ark but with alot more flaws lol. Anyways I just re-adjusted the whole exhaust as much as I could then ended up putting a piece of high temp hose between the pipes and the crossbar there's actually a perfect groove in the middle of the crossbar to hold the hose in place. Havent had an issue since its been there for about 3 months.
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2009 Nissan 370Z 6MT
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