JET 1 V6
I waited till I used up 2 tanks of fuel. It does not increase MPG. The instructions are horrible, just watch you tube, it's a shame that Jet gave out such weak instructions. It is easy to do if you watch a video. In an automatic on the camaro there is a dead spot in drive it cleared that up which made me happy. Responses really well when you accelerate.
on the fence about hypertech
2012 5.7 hemi charger. Keep getting random misfire code. Unplugged hypertech cleared code put 50 miles on car no code. Called hypertech sent it in and they sent me another. Came code. Called hypertech they said they didn't know and they would replace it again or for me to return for refund. Product made power and torque if you dont mind your check engine light being on all the time.