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Originally Posted by Draven94blackbird
What years were the tpi's controled by speed density and not mass air flow? and what do you think is better?
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gm kept going back and forth...i know my 89 was maf but my friends 91 was SD...they both have their good & bad points...i would definitly ask fasterthanyou as to which has more potential in the long run...in ls1 cars SD tuning is like the hot thing to do now...just takes a while to get each car dialed in right but once you do they generally make more power but dont adjust to outside conditions as well nor can it compensate for new mods very well...as a new tune is required for new mods.