Originally Posted by NWRQC
A safe bet is to figure about 3mpg increase over stock, depending on your driving. Remember that once tuned you won't be able to go off what the EVIC displays because some of the sensor signals that it uses to calculate mpg are being altered by the tuner. I wish mine was accurate when it tells me im averaging 20+mpg, but reality kicks in once I hand calculate and see the 14-15mpg I'm actually getting
You're engine will be a lot happier once it's not breathing it's own farts and filtering them out the back end. Look into Diamond eye exhaust systems as well. I think I paid $280 shipped for my 4" TBE.
Ya I never fully trust my EVIC for the final numbers; always hand calculate, even stock. Even if I just go up 3 mpg from where I'm at now I'll be a happy camper. It all makes a difference.
$280 shipped for a TBE isn't bad at all. Do you remember where you got it from?