Ok, I'm officially disappointed with this mod, and thinking of removing it from my truck.
I was really hoping it would transform the truck into having 5 real gears. Instead, I've got 3 gears and 2 overdrives.
I towed my Boat with my dakota, loaded to the gills with gear, my wife, and my kids, to Bull Shoals Arkansas. Overdrive was off. The 4.10 gears I had installed earlier in the year do made towing easier, yet I decided to back off on most of the hills as it is still a 9 year old truck with 90000+ miles. I kept my speed between 55 and 65 on most of the Arkansas roads, RPM's in the 2500-3500 range. For most of this trip, the truck was in 3rd gear, 6500 rpms, 65 mph
A "true" 5 speed should drop to "4th" and keep rpm's about 2500 at 65 mph, right?
Tonight, while driving home from Branson, at 70mph, I'm at ~2000 rpms with the mod and 4.10 gears. Up the hills I go. Instead of dropping to 4th for a little extra power, the truck skips it and drops to 3rd and 3500rpms.
It's not giving me 5 gears, it's giving me 3 gears + 2 overdrives.
And it won't go into the "4th" or first overdrive for anything it seems, except to bridge between 3rd and 5th after going up that hill.
Anyone else experience this?