Installed the BD Diesel Throttle Booster today and left on fast idle for a couple of minutes while went a got my wallet for a test drive. Set selector to level 3. I took it out and this cures the lazy low speed accel. I never really noticed a lag in the truck before or after. I have a Bully Dog GT 40420 w/o tunes loaded. I use it to monitor EGT's etc. It has a throttle % gauge, I have monitored this for the last week or so. Under normal accel (light to moderate pedal pressure) it read 12-30 %. Now it is 25-60% so there you go. I would never romp the go pedal to get this response so for me to have it at light to moderate pedal it is worth it. I doubt I will ever load an ECM tune in this truck. I don't care about blowing smoke I have been there done that. I want this truck quiet and I want it clean. I might consider a TS Stryker. One of you will have to have the Edge JWA and will be selling your Stryker soon enough. I like this for 230. worth the price.