LS 411 PCM Start issue - HP Tuners
02-19-2014, 07:54 PM
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LS 411 PCM Start issue - HP Tuners
Long time third gen tuner - just starting LS stuff recently.
Sort of new to LS builds - I have tuned 1 for friends build which went great.. Just finished building my own and having a start up issue I can not seem to figure out. Using 411 PCM.. Have car running and have been working the VE table (Not using MAF).. Things going well there but having a cold and warm start issue -- But worse warm it seems..
Car fires instantly then stalls.. Over and over.. I can catch it with throttle but acts like it has no fuel for first few seconds then it catches and runs good.. Not flooding at all, just seems like way to little fuel or hardly none as soon as it fires. Everytime you try to start it continues to fire instantly then stall.
I do not assume it is not crank VE as it fires instantly, I have played some with start up enrichment but no help.. I saw after start prime delay which made sense - Thinking it would continue prime pulses longer, so I moved from 0 to 2 with no change what so ever..
Any thought on this?
Thank You for any help.
Not sure it matters but 408, PRC 247 HEADS, 224/228 baby cam for now.. Single 88mm coming soon
Sort of new to LS builds - I have tuned 1 for friends build which went great.. Just finished building my own and having a start up issue I can not seem to figure out. Using 411 PCM.. Have car running and have been working the VE table (Not using MAF).. Things going well there but having a cold and warm start issue -- But worse warm it seems..
Car fires instantly then stalls.. Over and over.. I can catch it with throttle but acts like it has no fuel for first few seconds then it catches and runs good.. Not flooding at all, just seems like way to little fuel or hardly none as soon as it fires. Everytime you try to start it continues to fire instantly then stall.
I do not assume it is not crank VE as it fires instantly, I have played some with start up enrichment but no help.. I saw after start prime delay which made sense - Thinking it would continue prime pulses longer, so I moved from 0 to 2 with no change what so ever..
Any thought on this?
Thank You for any help.
Not sure it matters but 408, PRC 247 HEADS, 224/228 baby cam for now.. Single 88mm coming soon
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