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Message: [QUOTE="sootie, post: 1525761, member: 8162"] What air intake is on the truck and what tuning platform? Reason i ask: I did a 17 retro on a 13 and ran into the same issue. Same vgt % and everything. Would randomly have no response and smoke. Was running a No Limit stage 2 intake. H&S tunes by a reputable tuner, apparently for a 5" dia intake tube. Truck didnt respond well under 1800 rpm at all. Ran fine at WOT. Went into the tunes and put a bottom hard limit of 25% on the vgt cycle. Minimized the issue but it didn't go away. Ran a stock MAF table and the truck ran great, just lacked power. Started gradually changing the MAF scale until we were happy with performance. When we got it right, we never saw 12.16 or 25% again when we were monitoring. It was simply a MAF scaling issue. So, first check to see that your MAF is clean and in the tube the right way. Then, if you are running a larger than stock diameter intake, swap the stock intake on and see if it goes away. [/QUOTE]

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