Hmm. I am not sure what your problem is.. But maybe your exhaust is banging on your engine/gearbox mount? The Ej20 move alot i hear. I have a bent Gb mount, and under hard driving that clunks.

I also feel it in my pedals. It has to be a mount or the exhaust check it for a dent. Because mine hits the mount only when you turn left with no throttle.

Sorry but hope that might help.

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