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

 

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.

 

You will need to retune for sure.

 

i kinda figured that, but it would be sweet if i didn't have to and just adjust the pe tables.

 

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.

 

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.