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If you want a REALLY good efi- system, ther are two options. Either factory EEC IV or one of the high- end aftermarkegs like Motec M800.
After spending 6 months trying to get rid of some minor low- speed running problems with a fast xfi xim lsx coil setup. even with help from alot ot experts, it show the weakness of the system. The fast IS a good system, but it lack alot of the adjustability you find in, for instance, the motec. Fast is fairly easy to tune, motec is not.
People over here spend in average 1000 - 3000$ to get their systems running a good map from the pros on their dynos.
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