i just got my power fc in last night.i have 720cc injectors and a 3 bar gm map sensor.xs engineering put in some base maps for me.i put it in and it cranked after a few trys but was idling very rough.i let go through the idle setup and it got better but still wasn't very good.i pulled it back in the shop and now it won't stay running.it will crank and go to about 1200rpm and shut off.i tried adjusting both the water correction and the crank map in both directions and it did not make a diff.i ran out of time to try anything else.does anyone have suggestions on what to try next?i will be working on it again tonight and want a good starting point.the air/fuel seems to be reading lean when it ran.i did try the fuel and timing map at 1000 rpm.i adjusted it up and down and it still didn't help.

 

Whats up man I have the same thing 3bar and 720cc, and xs tuned mine also. Try this, put your starting and cranking back to the setting they were before you changed them. Then put your injector correction factor to 38.9% + .06 ms
if that don't work raise your fuel pressure a couple of psi.

 

make sure you have choosen the correct option (i think is option 5) for the map sensor.

 

i got it running again tonight.the fuel pressure was too low.i set it at 45 psi at idle and it runs now.the idle still needs work though.it is too lean at idle.i tried adjusting the inj map,but it doesn't seem to help.finally i got it to idle better by raising the injector on the ign/inj map.but when i let it cool down a bit and cranked it again it was pretty rough.why doesn't the fuel map seem to do anything?can you not adjust it there?also,on the ignition map and the injector map,what is the pressure values?p01-p20 is 1000-30000.1000-30000 what? has anyone tried getting help from either xs or apexi?they don't seem to want to give any help.i tried asking xs for help and they just said"read the manual and figure it out."i called apexi tech and they said "i really don't know."wtf?

 

If it still runs like **** at idle maybe this will work, go to monitor then to map trace. Look and see what block it is in at idle then go to inj map and change those blocks to 149. The blocks you should change are n1 n2 n3 and p1 p2 p3 p4. Change all of the ones in between also. There 12 all together. Another thing is what fuel pump do you have because I have the walboro 255lph hi press and my idle pressure is 50psi no matter how much I try to lower it because of the pump.

 

thanks,i'll try that.the pump is a venom inline 100gph and tha regulator is an sx.what about the pressure numbers?