High maf at idle?

[C.bowles2]

Is 90 g/s too high of a MAF reading at idle? No codes. Efi live tuning. I had new tunes put in cause i wanted less turbo lag. Would that explain the high maf reading at idle?




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[mike diesel]

That is insanely high at idle. The truck probably sounds aweful and smokes like a beast.

 

[C.bowles2]

It sounds and runs fine. No abnormal smoke or anything




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[mike diesel]

My truck at 55g/s at idle with my 30% injectors was so smokey and had insane fuel knock. We dropped it down to 42g/s and it is a new truck.

 

[cstephens93]

My truck runs at about 37-38g/s at idle with an LBZ intake on it with Rob's tuning.

I had the stock LLY intake on it with his tuning as well and at idle it was about 60ish g/s at idle

 

[C.bowles2]

Hmm odd, maybe ill try flashing the old set of tunes and see if its the tuning or sensor problem. Maybe the edge is just reading the pid wrong




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[cstephens93]

That would be weird.

I think it should be around 40ish g/s

 

[GMC_2002_Dmax]

Sometimes its better to say nothing at all...........

 

[chevyburnout1]

In theory all of our trucks (minus VVT) should flow the same amount of g/s at idle depending on altitude. I would think setting the MAF tables to mimic stock as much as you can would be the way to go, then adjust fueling from there. But that's just how I do my tuning.

 

[C.bowles2]

Yea it runs good and drives awesome. Im not complaining. I just didnt know if my maf sensor was bad or something haha thanks guys




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[GMC_2002_Dmax]

In theory all of our trucks (minus VVT) should flow the same amount of g/s at idle depending on altitude. I would think setting the MAF tables to mimic stock as much as you can would be the way to go, then adjust fueling from there. But that's just how I do my tuning.

I am not here to start any arguments or to question how others do their tuning.

What is often "normal" cannot be duplicated as "normal" once you alter the air filter, intake tube, mouth piece, etc.

If the way you tune something works for you then go with it, if you alter certain tables and it effects your tuning when you play with MAF scaling then go with it.

Unless the trucks have "STOCK" parts and unless you take into account the differences in volume and flow that a stock vs. aftermarket intake changes and the bends and where the MAF sensor is located then its really just a "number".

:thumb:

 

[chevyburnout1]

I am not here to start any arguments or to question how others do their tuning.

What is often "normal" cannot be duplicated as "normal" once you alter the air filter, intake tube, mouth piece, etc.

If the way you tune something works for you then go with it, if you alter certain tables and it effects your tuning when you play with MAF scaling then go with it.

Unless the trucks have "STOCK" parts and unless you take into account the differences in volume and flow that a stock vs. aftermarket intake changes and the bends and where the MAF sensor is located then its really just a "number".

:thumb:

Oh I understand fully and am not trying to start any arguments :hug: Hell I have a 6" diameter intake where my MAF is so I know it's only a rough measurement!