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MAF tuning for turbo

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Old 10-22-2006, 03:01 PM
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Default MAF tuning for turbo

I just swapped a 6.0 in place of my 4.8 and kept the same turbo system. Can i use the same values from my MAF tables i had with the 4.8 or will it be completely different for the 6.0? Thanks
Old 10-23-2006, 05:38 AM
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I would imagein that 6.0 will be sucking more air than the 4.8 did. So i would guess you would need to retune.
Old 10-23-2006, 08:54 AM
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You will need to retune for sure.
Old 10-23-2006, 11:03 AM
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i kinda figured that, but it would be sweet if i didn't have to and just adjust the pe tables.
Old 10-23-2006, 11:51 AM
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where you using stock 4.8 values before? or did ya tune the maf table already?

i ask cuz if you were fine with stock 4.8 maf table, just download a 6.0 stock tune and use the 6.0 stock table.
Old 10-23-2006, 01:07 PM
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You'll be just fine running the stock MAF calibration table. Compare a 4.8L tune to a 6.0L tune (of the same year), and you'll see that the MAF calibration is identical.

The MAF measures incoming air, completely independent of engine size. 300g/sec of incoming air is 300g/sec, regardless of whether its on a 4.8L at 6000rpms or a 6.0L at 3/4 throttle at 4500. The important piece of the puzzle to have correct with a change of this type is your injector flow rate, as MAF calibration relies heavily on IFR to provide accurate fueling.

With a change from 4.8 to 6.0, the VE will definitely need to be scaled up a bit. Cranking VE, Afterstart enrichment, idle airflow and a number of other tables will also need to be changed. You'd be best off taking a stock 6.0L tune and startign your re-tuning with it.
Old 10-24-2006, 08:31 PM
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Originally Posted by dc_justin
You'll be just fine running the stock MAF calibration table. Compare a 4.8L tune to a 6.0L tune (of the same year), and you'll see that the MAF calibration is identical.

The MAF measures incoming air, completely independent of engine size. 300g/sec of incoming air is 300g/sec, regardless of whether its on a 4.8L at 6000rpms or a 6.0L at 3/4 throttle at 4500. The important piece of the puzzle to have correct with a change of this type is your injector flow rate, as MAF calibration relies heavily on IFR to provide accurate fueling.

With a change from 4.8 to 6.0, the VE will definitely need to be scaled up a bit. Cranking VE, Afterstart enrichment, idle airflow and a number of other tables will also need to be changed. You'd be best off taking a stock 6.0L tune and startign your re-tuning with it.
I already have a stock 6.0 tune in it, i was thinking of just pasting the values from my 4.8 turbo tune into the stock 6.0 tune and adjust the other tables accordingly for the turbo.
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