My truck has always had a miss at about 3300rpm's(with 16cm housing), and up in park/neutral. Back when I put my 12cm housing back on a few weeks ago it would rev clear to 3500 no popping, and when it got there it just sounded like it was floating the valves then... Im sure the 12cm was pushing more boost than this one in park. So would not having enough airflow in park cause it to miss/smoke like it does?? That is the ONLY thing I could see making the difference. Why would this be? Just curious, and thought this was interesting.

Eric

 

have you messed with timing lately?

 

Nope. Put the 16cm back on, and its right back to popping at 3200-3300 rpm's. Weird, huh?

Eric