just wanted to share a little info on the 275 v4 vs 275 v3. i checked the mileage on the 275 v4 and it got 14.5 on 2 tanks in town. 275 v3 got 16.5 in town on every tank. so i swaped back to the v3 today and it feels a lot better driving in town and all the lug is gone. what are you guys thoughts about these two programs. which do you prefer?