Maf scaling

[FreshDA9]

I searched and was surprised I didn't find anything in the search?

If I wanted to install a LS7 Slot Style Maf into a Camaro/Trans Am with 0411 PCM, how would i properly re-scale the Gen4 Maf to work properly in EFILive? If this is all ready a write up somewhere can someone post a link to said write up, Please?

thanks guys.

[joecar]

You would have to correct the MAF table by doing AutoMAF or Calc.VET using a wideband.

[FreshDA9]

I wouldnt have to rescale the HZ load, just tune the curve like normal?

[joecar]

If you can interpolate the Hz scale to fit the LS1 MAF table (requires some math software), then go ahead and do it, but you'll still need to correct/tune it

( the main reason being that your MAF plumbing has it's own characteristics which are different from other vehicles, and which usually will affect how the MAF behaves )

[ScarabEpic22]

Id use the f-body IAT sensor, the LS7 one has a different scaling and EFILive IIRC doesnt have the IAT scaler table to change it.

[joecar]

Erik makes a good point.

[FreshDA9]

Good to know!! thanks guys.

[ddnspider]

I had to scale the LS7 MAF on my turbo 98 TA....but it was the entire tune that had to be scaled, not just the MAF.

[steve40]

is there an automaf tutorial?

[joecar]

is there an automaf tutorial?

You do this:
- disable VE (set B0120 to zero).
- disable CL/LTFT/STFT (B3801, B4205, B4206), and SOL if you're running a COS (B3647, B3649).
- set PE safely rich (B3618), and make sure it enables suitably (B3616) .
- log wideband lambda.
- create MAF map of BEN (e.g. BEN pid = "{EXT.WO2LAM1}*{GM.EQIVRATIO}").
- apply low cell count filter and throttle transient filter.
- multiply BEN map into MAF table B5001.
- extrapolate/smooth B5001 to cover un-hit portions of table (should look look like x^4 polynomial curve).