Bullydog GT Mileage Improvement???
 

Hi this is a question to all the people with the newer Cummins who have the Bullydog and have not done the deletes. I have a customer that is driving 50K a year pulling a 7,500 empty trailer and getting 10MPG. Would him buying the tuner be worth it? WHAT ARE THE REAL IMPROVEMENTS YALL HAVE COME UP WITH?!? I cant seem to get any results online or find anyone that I can ask who already has one!

I used the Edge Evo HT before i did the deletes, noticed a lil more power and fuel mileage was up about .5 of a gallon.. was 16 then was getting 16.5...

I wouldn't run bully dog on a lawn mower or even a guys truck I hated. just my opinion:tu:

lol. I used a bully dog on a 2005 5.9 and liked it. I have no experience but would do a cost analysis to see how many miles it would take to pay off the cost. If they claim to only gain 1 - 2 miles I would be a little weary. Driving a little more conservative can make a big difference when tests are done. Not knocking any of these products but would be a little weary.

I have a 2012 cummins with the bully dog gt. I unfortunately have not been able to do a proper test for fuel mileage seein as i put it in just before winter and we've been fighting minus 30-40f temperatures. I was able to do performance tests though and they dramatically increased and I'm very pleased so based on this I could only imagine that fuels mileage would increase when pulling a trailer. Before I did the gt I was getting 19.4 to 19.7 mpg on paper at 75-80 mph also on 35 inch tires. So I feel that as long as my mileage has not dropped and performance has only gone up ill be very happy with the chip

reread op, never mind