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Originally Posted by Trash
(Post 4709236)
It is likely lean. But....do you have the correct MAP sensor? i.e. a 1 Bar sensor and not a 2 Bar?
If your motor is indicating lean try solve that issue first. I don't care if you think you have reversion, put some fuel into the lean spot and see what happens. Trust the wide band until proven otherwise. Yes. 1 Bar MAP sensor. Tried a known good sensor from one of my other spare motors and have virtually identical MAP vacuum readings at idle. Also 2 different ECM’s and both display roughly the same MAP vacuum readings at idle. I don’t have the ability to tune either ECM as my understanding is that they are password protected. |
Originally Posted by tgorbett
(Post 4709240)
Trash, Yes. 1 Bar MAP sensor. Tried a known good sensor from one of my other spare motors and have virtually identical MAP vacuum readings at idle. Also 2 different ECM’s and both display roughly the same MAP vacuum readings at idle. I don’t have the ability to tune either ECM as my understanding is that they are password protected. If no password, then just need MEFI Burn |
If they did password it I would *****. You paid money for a specific program for your motor.
If they didn't reprogram it and only said they did, this would put the motor in a real lean condition |
Have you looked to see if they are password protected? Who did the tune? Bob at Mefiburn knows just about everyone's passwords, he has helped me unlock a couple
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Originally Posted by tgorbett
(Post 4709239)
Looking at the MAP sensor vacuum reading on a Rinda, should MAP vacuum and the mechanical gauge vacuum match pretty closely? |
Is there a vacuum port on your regulator ?
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Originally Posted by GPM
(Post 4709267)
Is there a vacuum port on your regulator ?
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Originally Posted by snapmorgan
(Post 4709258)
Have you looked to see if they are password protected? Who did the tune? Bob at Mefiburn knows just about everyone's passwords, he has helped me unlock a couple
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Originally Posted by tgorbett
(Post 4709285)
Yes and it is tee’d to the MAP sensor. Have tried capping the side of the tee that goes to the regulator so that only the MAP sensor sees the vacuum. No change. |
Just some thoughts. If this thing just started to run lean, maybe it's an injector failure. Check your plugs and see if you have one white one, or pull the injector plugs one at a time while the motor is running to see if it makes a change.
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