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I've done 3 NA's. 2 had gains averaging about 10/12 rwhp. 1 had no gain at all. nothing. BUT, having great air fuel ratio, even at the cost of a 179 afc and dyno time, is awesome piece of mind imho. it's a gamble whether the afc will yield gains for you, but it's great piece of mind.
Petz #3
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