I just swapped a d16y7 into my 91 lx and having a problem with it running really rough and backfiring, and if I give it gas it bogs and backfires more. It starts up easy but adj. the dizzy doesn't help out enough when I turn it. No CEL comes on at all and I'm using the pm6 ecu. The only thing I can think of is the timing may be off but the engine ran fine in my friends car when he pulled it and it was never taken apart when it was out. Also I get this strange loud popping banging sound coming out of my aem cai.

 

Anyone?

 

Swap the MAP and TPS connectors and see if that remedies it. They are the same plug and are often put to the wrong connections. Just a thought.