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Author Topic: Tuning SD vs. MAF  (Read 2113 times)
Big Block
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Posts: 6079

Location: Belvidere, IL

« on: March 01, 2009, 11:16:27 pm »

Alright. Looking at picking up an 87 gt. hasn't been converted to maf.

I do have the stuff to convert to MAF but either way I would want to Pick up the new QH.

I have never tuned either SD or MAF before.

Is there a harder learning curve on  one vs the other?

Also. when properly tuned. Does one run better than the Other?

I know that MAF reads the incoming air and SD uses sensors to determine.

But aren't there Stand alone Processors that don't use MAF?

Just trying to decide which road to take.


4 Banger
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Posts: 19

Location: Rockledge, FL
It all goes back to drag racing...

« Reply #1 on: March 03, 2009, 05:16:19 pm »

If you want to tune for driveability and WOT performance, mass air is the way to go. I think using the QH will be the hot ticket moving forward especially since the GUFx processors are becoming the carbs of the 21st century. With companies like MassFlo selling EFI conversions using the A9L and hot rodders of all kinds converting over to these "simple" Ford EFI systems, it's here for the long run and the support is already leaps and bounds ahead of anything else in the market place...

Craig Moates rocks and so do all the guys who are developing the software to work with the QH...


95 GTS with H/C/I, stock like compression, a five speed and some giggly gas... Good for lowwwwww 8's in the 1/8 with weak 60 ft's and no spray till second...
4 Banger
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Posts: 38

Location: Seattle, WA

« Reply #2 on: March 03, 2009, 07:55:37 pm »

I run a tweecer on a DA1 in my mustang.

Input all the important data (injector slopes, breakpoint, etc.)

Set up the commanded AFR table to the values you want
With a calibrated WB, tune each RPM/load point in the VE table so the WB reads what the commanded AFR cell is for that RPM/load point. Rinse and repeate…

Get the gist?
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