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Old Aug 12, 2008 | 09:36 PM
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Default maf sensor

Added Granatelli MAF sensor added to my c% and error code p0171 does anyone know what that is?
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Old Aug 12, 2008 | 10:11 PM
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Originally Posted by fmbusby
Added Granatelli MAF sensor added to my c% and error code p0171 does anyone know what that is?
P0171 is Bank 1 (drivers side) O2 sensor lean condition (Fuel trims greater than 25%). Did you have a comparable P0174 (Bank 2) ? Check for an air/Vacume leak between the MAF and the throttle body.

Current or History? Did you clear the code and have it return?

Good Luck
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Old Aug 12, 2008 | 10:56 PM
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^^^^^^

Ditto
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Old Aug 13, 2008 | 12:46 AM
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Do a seach on here and read up on the aftermarket MAF's--especially the Granatelli--Your bank 1 is lean meaning that it was over 25% lean--probably the right side was just slightly less and under 25% so no code-
Hate to say it but without doing some extensive data-logging and re-callibrating of that MAF the best place for it is in the circular file !!!
At best on a basically stock engine with the usual mods,even with tuning you'll only get 3-4 HP with the Granatelli--Not worth the effort and all the potential issues it creates--$$$ best spent on something else--A stock MAF whether it came screened or unscreened is good for 500HP--so why bother messing with it----
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