Im getting gerars installed in my car. Stock 99 Gt Auto.
DO I HAVE TO GET A HANDLE HELD TUNER TO TUNE IT?
WHAT HAPPENS IF I DONT?
I know I can gain horsepower from it but thoese thing are expensive.
DO I HAVE TO GET A HANDLE HELD TUNER TO TUNE IT?
WHAT HAPPENS IF I DONT?
I know I can gain horsepower from it but thoese thing are expensive.