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N55 Downpipe question?
Hi,
I've got an n54 but met a guy at the track that's having issues, and hes got a n55 135i with jb4 g5, burger dp and intake. Car is also a 7 speed DCT. Anyway he's only trapping 99 mph in the quarter mile and I'm trying to help him troubleshoot.
Is it possible on an n55 to block the wastegate actuator with the v-band clamp on the downpipe?
Thanks
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