Relay question
1994 F150 XLT 5.8L 2wd
Joined: Mar 2014
Posts: 2,150
Likes: 249
From: Iowa
According to dyno tests unit505 references you regain up to 20hp, your not adding any just gaining back. As for MPG I went from 10.5 (all in town) to 11.6, have gotten 14.8 with 100% highway.