This latest mod is worth every penny. It has change the characteristic of how the rig putts putts around. It has made it more responsive. It basically gave the rig power on demand...
the spring booster is just a electronic booster. it adds voltage to the current voltage from your gas pedal to the ecu. Making the ecu think your at 50% throttle instead of 35%throttle... By adding voltage it makes the car much more responsive.
I have driven close to 500miles on this thing before wanting to post the review. I have tried driving close to 80 freeway miles on the race setting. And driven the rest in the sport setting. With my current set of mods... The sport mod is definitely enough to make this heavy rig moving...
Before the sprint booster the Rig would struggle maintaining 76mph and in any incline would quickly drop the mph down to 68mph.
On the race mode 80 to 85mph was a breeze but the shifts are very direct and the torque converter stays locked longer. And with only 35% throttle input the rig is already at WOT.
While on sport mode; the rig is just a joy to drive around town. You can actually do jack rabbit starts at a red light with very little throttle input. Cruising on the freeway at 80mph is alot more easier and isnt as labor intensive as mashing the gas all the way down to get any kind of acceleration. In sport mode only a little more than quarter of throttle pedal will do ...
Unlike a few owners... I decided to run the switch with mine. I figure I want more of a dull throttle pedal when wheeling. So Off will only be reserved for wheeling...
Over all this is one of the mods Ive very very pleased I purchased.
ps. I mounted my module away from the heater pipes right next to the gas pedal.
pps. I'm no longer looking at 4.88 final drive ... I think with the spring booster and 4.56 final drive would make this rig have enough get up and go ...
Heres where I mounted my switch...
heres how I secured my module and extra wiring ...