Not sure but a couple things...
First I would post this in the tuning section... second I would give some more info on the uprev you had done... did you have it dyno tunned, etune or canned tune?
If it was done by a shop I would take it back to that shop and have them re-dyno/tune the car.
If it was an e-tune or canned tune I would contact uprev directly.
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