Besides a cold air kit what other bolt on mods are their available keep in mind this is a van that is equipped with a wheelchair lift curb weight is 6,000+ lbs I do a lot of towing. And I tow heavy loads up to 10,000lbs I need more oompf for the hills. Has anyone ever had a van “tuned” or used an aftermarket “tuner” such as Hypertech etc I do not want to switch from 87 fuel but would like to add some torque and get this thing to shift like a truck.
Thank you