NO GAIN IN FUEL MILAGE
Moderator: mikel
RE: 7186 LMM program
Finally got my income tax money in. Spent $500 on a MBRP 4 exhaust down pipe back. With tow mode was getting 15.94. Now getting 19.60. Both were hand calculated, for one week each did half and half. Went to work on side roads with stop signs every mile (City) On the way home got on I-40 (highway). I will be trying the other tunes to see were I should set my predater.
fuel mpg
u7186 06-07 gm diablo sport 06 gmc slt crew 4x4 duramax
i tried all 4 settings to get the best millage and found out the 120 hp gets the best on my truck. i also have a k&n cold air box and a afe 4" exhaust.
it gets 26 mpg on interstate at 75 miles an hour. shocked me
i tried all 4 settings to get the best millage and found out the 120 hp gets the best on my truck. i also have a k&n cold air box and a afe 4" exhaust.
it gets 26 mpg on interstate at 75 miles an hour. shocked me
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countrymac
- Posts: 15
- Joined: Wed Jun 18, 2008 5:24 pm
RE: fuel mpg
I noticed my biggest increase in MPG with the addition of the MBRP exhaust.. of course greedy as I am I want even better MPG so I also got Diablo (far cheaper then the Edge w/Attitude) and have tried the tow haul setting. Recently after adding a GPS I realized my mpg is not accurately calculated due to the speedometer is 2mph slower then GPS (actual).
As soon as I get the speedometer to correctly measure the speed I'll do some recalculations.
Side note: When I have the tow haul Diablo setting and I am actually towing something on the Highway only, and drive somewhat conservatily (like 65mph) my gas gage doesn't budge hardly when pulling my tag along 9500lb RV Trailer where before it dropped at a good rate. Now around the city it still drops like a rock... it is very obvious that you get FAR better mpg on the highway then the city but then again that could be just the setting... so I will try a different setting since I'm mostly driving the city without towing anything.
As soon as I get the speedometer to correctly measure the speed I'll do some recalculations.
Side note: When I have the tow haul Diablo setting and I am actually towing something on the Highway only, and drive somewhat conservatily (like 65mph) my gas gage doesn't budge hardly when pulling my tag along 9500lb RV Trailer where before it dropped at a good rate. Now around the city it still drops like a rock... it is very obvious that you get FAR better mpg on the highway then the city but then again that could be just the setting... so I will try a different setting since I'm mostly driving the city without towing anything.