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I suggest you try to avoid driving hard with any where near 30% ltft. Try swapping the intake and see if it improves. If it does, you can run some logs and post in the log thread for some opinions. If all is good, you can try maf scaling on the aftermarket intake.
Look for posts by steve99 and check his signature for a bunch of links and info maf scaling, logging, and tuning in general.
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