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shouldn't need methanol.
if he supposedly has 2 LD9s and knows how to tune them, then something may be wrong with your car.
running an air filter? could be clogged
could have a boost leak
could have exhaust leak pre-turbo
exhaust piping too small (what size do you have?)
do a compression test
then again, you have an eBay journal bearing turbo that is about the size of a genuine GT35R.
also the auto trans slipping will cause a lower reading. and if they're using a mustang dyno it will also be lower than what you might expect from a dynojet or others (by 15-20%)
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