sudden lost power and lean out at 5psi, fuel pump?
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I just installed my 460cc injectors today and couple pulls. The car suddenly lean out to 17:1 when i have 5psi of boost. Here's a log of what happened during the pull. fuel press seems to shot up to like 55. Can anyone confirm this? Thanks
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Well, your tach signal drops about 300 rpm when it happens along with your injector pulse width but goes back up right away and AFRs return to where they were. It's almost like it thinks your decellerating and the overrun is kicking in. Did it misfire at the same time or do you have any questionable grounds that may be creating a noisy signal?
By the way, how do you know your fuel pressure went up? Hood mounted gauge? |
Originally Posted by lordrigamus
(Post 603074)
Well, your tach signal drops about 300 rpm when it happens along with your injector pulse width but goes back up right away and AFRs return to where they were. It's almost like it thinks your decellerating and the overrun is kicking in. Did it misfire at the same time or do you have any questionable grounds that may be creating a noisy signal?
By the way, how do you know your fuel pressure went up? Hood mounted gauge? |
Looks like overboost shut down
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Or this /\.
The pump was holding up good until recently, now it's somewhat questionable. I have had it for a while though. I have a gauge on the fuel line but it's only good when not under load. I'm not sure it's a fuel issue, it seems like something is deliberately stopping it. Double check your settings. |
it seems like the overboost setting, sorry for being such a newb, thank you guys for your help.
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Ben is the winner!!!
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