Fueling Problem?
02-26-2007, 11:14 PM
#1
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Fueling Problem?
So I know that narrow band A/F gauges are unreliable but latly my has been saying that I'm running lean in boost sometimes. Most of the time it runs perfect on the gage but other times it runs lean and it also feels like it's lean (less power). No knocking yet but I'm a little concered. Any idea what it could be. Bad fuel pump, FMU, ???????
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02-26-2007, 11:18 PM
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NBs are horrible. You could be running rich, you could be running lean, no way to know.
FMUs can sometimes be a bit "flakey". My vortec seemed pretty reliable, the BEGi would sometimes take a second to catch up.
FMUs can sometimes be a bit "flakey". My vortec seemed pretty reliable, the BEGi would sometimes take a second to catch up.
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02-26-2007, 11:34 PM
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Mine is a 1.8 NA. Don't I have your old vortec? I have a 6:1 disk in it right now. Is weird. One time it went in the red then popped back to green. I would just ignore it but like I said I can feel it lack power at times.
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