When I had the maf after the charger, the car had a really rough idle and was very jerky on part throttle. Everything was ok when you put your foot down but otherwise it was a pig to drive. So I relocated it and ran a dv and it made the world of difference. Now I had a smooth idle and it was just like a standard car on part throttle with no jerking. Notice all current s/c kits place the maf before the charger. There's a good reason for this. I'm obd 1 btw, which is more fussy than obd 2. Are you obd 1 or 2? If you are obd 2 you may find it runs ok with the maf after the charger. I'd try both m