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.
Couldn't really tell any difference on 87 octane but it did seem to come alive a bit on 93. Throttle response is definitely quicker though. I'd probably buy again just because I've heard bad things about the more expensive units on the market. Don't really think it helps gas mileage either. I do however have a CAI on the way & put exhaust on last month so we'll see how all the mods work together.