85673, RE: Car bogs out at 4000-4500 Posted by GSGoinFast, Dec-31-69 06:00 PM
Originally posted by DJ420a Correct me if Im wrong, but when I had a Vortech SFMU, you didnt need an fpr. Is that different with an FMU? If not, I'd be starting there.
the fmu is basically a piggy back to the stock fpr. what fpr do you have? is it a stocker or something else?