i own a 1998 ford explorer sport with the 4.0L OHV engine. i am trying to get a rough estimate ( as close as possible ) of what my size explorer is. i dynoed my X and it came up as 144 RWHP. but i went to the track today and raced it in the quarter mile so i can use the corral.net dyno program to figure out if my dyno run was correct. ( which i don't believe it is ) well the sticker in the door read 4400LBS, so i threw that in with my trap speed, figured a few extra lbs for the 1/8 of a tank of gas, and my 1/4 mile time and it said that i was pushing 196 BHP ( is that RWHP???? ). well i tried it at 4200 LBS and it came up with 176 BHP. if anyoen can help, i would greatly appreciate it. thanks