MicroSquirt.com read only forum (Jan.15,2018)

Well tonite i put a cam in a 294 and now idles kinda rough but I have notice quite a change in exhaust pressure its alot more higher. So which meaning that turbo should be spooling quicker (i think). It doesn't even run all that rich either. All i did was change the cam and did all of this. I just have to advance my cam just a couple more degrees before i take it out on the road. Someone on another forum told me to try retard the timing alot more underboost. could this be ture? I thought I would need to advance timing. Let me know thanks

Jeff

there is a lot of complexity to optimum ignition timing....let alone cam timing. The simple way to approach this is ignore the preconceived common belief that "more is better". Try different ranges, some engine configurations don't like a lot of timing.

294 is an awful lot of duration for a turbo engine. what was the old cam?