My PFC came from SR motorsports w/ the inj settings of pri 550cc and secondary 1150cc. My secondaries are suppose to be 1200cc(purchased new, bored out from SR motorsports at the same time as PFC). Should my setting be set to 1200cc? Would this just richen up what I already have set? I am too rich as it is.

Also,
What should the inj pulse be set at? Mine are at .04% for bothe primary and secondary.

Thanks,
Steve

 

When I received my bored out 1200 secondaries from RC engineering, they included flow stats. One was sligthly higher than 1200 and the other was a little lower. I placed the richer one on the second rotor, and set the PFC injector size as the averaage of the two.

Primary injector lag correction for 550 is 0.00.
For stock 850 bored to 1200 for secondaries, lag correction is .04 to .10.

If you search this forum, you will find other discussion of this.

 

Thanks,
No flowstats w/ my injectors from Sr motorsports. Oh well.

 

Also, should my secondaries be set at 100%? Thats how it came. But according to instructions, they should be set lower. The base PFC maps are for 550/850 right? And just changing secondaries in PFC to 1200cc will not work. Then, I have been running rich forever. I never really checked this in the past. It came from SR tuned, so why should I check. HMMM
Chuck,
I was using your first maps from awhile ago(the timing split was not 15 in the p19-p20 boxes). I was using your fuel maps. i read that you dynoed 312rwhp and at 11-11.5 a/f. With this you had your PIMS set 100+%. I dynoed 317 rwhp and moved my upper rpms PIM down to 95.3% and still had a/f's off the bottom of the chart(below 10). Seems strange. So are my secondaries shooting out too much fuel? My inj duty still only went up to 83%, I think.

thanks