External wastegate if turbo, probably open trumpets if not. Mine backfires flames out of the trumpets and mines not a rotary!
That's an Mx5 n'est pas?
What cams are you running to get it spitting back through the TBs?!
Exhaust cam as an intake cam but I think it's the fucked valves that lets combustion blow past
@Hefty started
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External wastegate if turbo, probably open trumpets if not. Mine backfires flames out of the trumpets and mines not a rotary!