Realised I posted this thread in the wrong spot so here it is again.

Hey guys. Just finished swapping a gsr, high compression build into my eg6. Sometimes on start up it has to turn over quite a few times before it actually fires and I've determined its due to a slight lack of back pressure. N/A and large exhaust piping. My question; is there such a device out there (like a butterfly valve or something) that will provide back pressure on start up and then open while running? Or is this ludicrous?

 

This topic belongs in the Hybrid Engine Swap forum, where your current thread is located. GSR is an Integra engine, not a Civic engine.