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Yet another ve ?

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Old Jun 14, 2005 | 12:22 PM
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Default Yet another ve ?

I have tried the ltft way of getting the ve tables in line and one of the steps is to disable the maf. I did that by putting the value of zero in the cells. Car ran very bad and made it impossible to tune. Got ltft below 10plus but my ? is how much does this (ve tables) affect fuel mileage??? My mods are not that far out there for gas mileage to be 13.6 in the city. any input???
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Old Jun 14, 2005 | 01:36 PM
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Leave the MAF table stock and try unplugging it.
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Old Jun 14, 2005 | 04:58 PM
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Originally Posted by Rays C5
I have tried the ltft way of getting the ve tables in line and one of the steps is to disable the maf. I did that by putting the value of zero in the cells. Car ran very bad and made it impossible to tune. Got ltft below 10plus but my ? is how much does this (ve tables) affect fuel mileage??? My mods are not that far out there for gas mileage to be 13.6 in the city. any input???
DON'T unplug the MAF sensor on a Corvette! It will put you in 'Reduced Power Mode' instead of SD mode. Leave the MAF table alone and set the MAF Fail Frequency to 0.

Your mileage shouldn't be that bad. Exaclty what did you change in the tune for SD closed loop tuning?
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Old Jun 15, 2005 | 08:31 AM
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Thanks for catching that. It works for F-bodies.
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Old Jun 15, 2005 | 08:44 AM
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Originally Posted by 405HP_Z06
DON'T unplug the MAF sensor on a Corvette! It will put you in 'Reduced Power Mode' instead of SD mode. Leave the MAF table alone and set the MAF Fail Frequency to 0.

Your mileage shouldn't be that bad. Exaclty what did you change in the tune for SD closed loop tuning?
I believe that to be true for '01+ cars. 97-00 can unplug the MAF to get into SD mode.
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Old Jun 18, 2005 | 12:45 PM
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Originally Posted by slo-vette
I believe that to be true for '01+ cars. 97-00 can unplug the MAF to get into SD mode.
Thanks guys!!! Is that for certain on the 97-00 c5s regarding simply unplugging it??? I did that my second wave of tuning and got very close to zeroes as far as ltft but read(and never got a light or code??) you have to disable maf to force into sd. more input please...
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Old Jun 18, 2005 | 12:53 PM
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Originally Posted by Rays C5
Thanks guys!!! Is that for certain on the 97-00 c5s regarding simply unplugging it??? I did that my second wave of tuning and got very close to zeroes as far as ltft but read(and never got a light or code??) you have to disable maf to force into sd. more input please...
If you unplug the MAF sensor or set the MAF Fail Frequency to 0 than it should be disabled. If your MAF sensor was enabled, you wouldn't see much change in fuel trims by changing values in the VE table.
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Old Jun 19, 2005 | 01:13 PM
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thanks again!!!!! i'll give it another try.
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