Anything about Ford EEC tuning. TwEECer and Moates questions dominate, but there's some SCT and OBD-II knowledge too.

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madramper
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Going supercharged, what needs to change

Post by madramper » Sun Feb 22, 2009 8:23 pm

I don't have much experience with mass air. Does my tune have to change when I put the blower on? If the meter measures the amount of air passing through it, then shouldn't it automatically add the fuel for the amount of air? I just want to be prepared before I put it on.

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cgrey8
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Re: Going supercharged, what needs to change

Post by cgrey8 » Sun Feb 22, 2009 8:31 pm

If the MAF measures the air, it'll match that. But what you do have to deal with is the fact that the stock tune tops out at 75-80% load. But with a boosted application, you'll go well into the 120-150% load if not higher depending on your level of boost. So you'll need to rescale your various tables to accommodate boost levels that high.
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89 Ranger Supercab, 331 w/GT40p heads, ported Explorer lower, Crane Powermax 2020 cam, FMS Explorer (GT40p) headers, aftermarket T5 'Z-Spec', GUFB, Moates QuarterHorse tuned using BE&EA

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