Makes a huge difference
My 83 F250 is way more responsive. I could barely keep up with traffic going up steep grades at highway speed. Now I can pass cars on the same grade. The instructions aren't great and some parts didn't fit right. I had to grind about an inch off the inlet flange foot to get it to fit. Overall a fun project and performs great.
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.