Want to see your logs, fast guys N/A.

[mustang_guy]

exactly. the maf lb/min is only accurate if the tune is accurate and it sounds like many are not.

This reminds me of most of the subaru tuners people were using. I find myself trusting 1-3 tuners in every single car group ive ever been in. Cars cost too much to just trust a tuner based dyno numbers.

I try to notice on the forums what tuner was being used when an engine blows. Obviously its not always the tuner but if it happens often the tuner becomes under suspicion for me at least. Too many people act like they know what they are doing. Truth be told, few are worth the money. Thats been what ive seen in 3 decades at least.

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[dubster99]

no because fuel trims. i'd very very surprised if you were actually moving 60 lbs/min without boost.

So by looking at fuel trims vs maf you can tell if the tune is off? /noob

I wouldn't think a Lund tune would be that far off.

 

[Higgs Boson]

So by looking at fuel trims vs maf you can tell if the tune is off? /noob

I wouldn't think a Lund tune would be that far off.

you can log fuel trims against the maf table but it's not really trims vs flow as I think you might be thinking.

 

[zaquhree]

I see mid 80's for maf lb per min

 

[markmurfie]

you can log fuel trims against the maf table but it's not really trims vs flow as I think you might be thinking.

What's your flow/trims ratio? LOL

 

[Higgs Boson]

I see mid 80's for maf lb per min

what are your fuel trims at wot?

one thing that may be throwing this off if trims are low is that the SD tables are untuned and the MAF is misreporting airflow due to partial (and incorrect) fueling from the SD tables.

 

[dubster99]

What's your flow/trims ratio? LOL

Everybody has to learn somewhere. He said that looking at fuel trims would give an idea if the MAF was off, that's all I'm asking...what to look for in the logs.

 

[Higgs Boson]

Everybody has to learn somewhere. He said that looking at fuel trims would give an idea if the MAF was off, that's all I'm asking...what to look for in the logs.

he wasn't making fun of you, he was just doing a "can you imagine" post....sort of an inside tuning nerds observation.

 

[dubster99]

he wasn't making fun of you, he was just doing a "can you imagine" post....sort of an inside tuning nerds observation.

Got it. My bad fellas.

 

[zaquhree]

LTFT are .98-.99 at WOT and STFT are .90-.98 at WOT depending on the day and fuel

 

[Higgs Boson]

LTFT are .98-.99 at WOT and STFT are .90-.98 at WOT depending on the day and fuel

It would be interesting to see in maf only mode, by disabling the sd tables.

 

[GSLSE20B]

I see mid 80's for maf lb per min

At 20% drivetrain loss that would be about right for your car

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