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Help with Lean Condition

Old Jan 25, 2009 | 09:31 AM
  #1  
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From: Hinesville, GA
Help with Lean Condition

I have searched and nothing comes up. I have a 2003 EVO 8, mods in the signature, however, I was driving the other day on the interstate and the car just went crazy lean. It went so lean that the AEM wideband, showed dashes. Now if I let of the gas and get back on it, goes back to normal. This condition seemed to only apply between 60 and 80. I put around town at the normal 45mph and nothing is ever wrong. The only major mod that I have done since it started this, is the PTE 880 injectors. I have them scaled to 713, +/- .1 on the fuel trims. The idle fuel trims have never lined up though. It stays at - 12% in EVOScan. Any advice or has anybody ever ran in to this...? Thanks in advance
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Old Jan 25, 2009 | 09:56 AM
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From: 2003 Evo VIII - Silver
What are the short term and long term fuel trims when you are crusing ?
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Old Jan 25, 2009 | 09:57 AM
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G20
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From: Orange County, CA
you need to change the injectors latency and fine tune the map too.
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Old Jan 26, 2009 | 07:06 AM
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yes i changed the latency table. I initially went with the values i got from the huge injector post here, but then went with AEM latency's. I am going to log my long term fuel trim and short term fuel trim again today. I did have the long term dialed in, to +/- 1%, but the short term is always at - 12% and even if i let it idle to watch it cycle, it wont. The car idles at 14.7 - 15.2 and -13 inches of vaccum. The duty cycle in evoscan at idle is like 1 %. Again Thanks for your help..
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