MightyFruit Trucking Posted November 12, 2014 Share Posted November 12, 2014 Yes brought this new pup home it has 445 MP 8 with Allison transmission! My question is he won't run past 65 MPH. However here in Ohio speed limit is 70 MPH. What would I need to do to turn speed up? Quote Link to comment https://www.bigmacktrucks.com/topic/37708-2015-granite-speed-question/ Share on other sites More sharing options...
wheeler73 Posted November 12, 2014 Share Posted November 12, 2014 The dealer will need to program the road and cruise speed to what you want as long as it is not over 87 mph as that's they will let you program. Quote Link to comment https://www.bigmacktrucks.com/topic/37708-2015-granite-speed-question/#findComment-266468 Share on other sites More sharing options...
MightyFruit Trucking Posted November 12, 2014 Author Share Posted November 12, 2014 Ok Great i'll call them in the Morning! Quote Link to comment https://www.bigmacktrucks.com/topic/37708-2015-granite-speed-question/#findComment-266474 Share on other sites More sharing options...
Mackdaddy2030 Posted November 19, 2014 Share Posted November 19, 2014 How do you like the set up.I would eventually like the 445 with an Allison.Does it shift smooth like a car? Quote Link to comment https://www.bigmacktrucks.com/topic/37708-2015-granite-speed-question/#findComment-267218 Share on other sites More sharing options...
bruiser Posted November 27, 2014 Share Posted November 27, 2014 I just got mine about a month and a half ago. Went from 06 Volvo 460 13 speed to 2015 gu713 445 with allison. Absolutely love it. I went to Allison dealer and had them reprogram downshifting from 6-4 to 6-6, in other words it would go right from 6th to 4th on engine brake (almost put you through the windshield), now it stays in every gear down to about 1100 rpm unless I downshift manually then it is about 300 rpm sooner. Also under load it downshifts by rpm and throttle position in other words if you are pulling a hill with your foot to the floor it will downshift sooner than if you are running at say 75%, very helpful if you are just about to the top ease up on throttle and let current gear take it up and over. Fuel milage went from 5.3 in Volvo to 5.0 in mack. Run app. 360 miles daily def consumption is 2 to 2.5 gallons daily. Seems to do a passive regen about every 2500. No active regents at 7800 miles. Quote Link to comment https://www.bigmacktrucks.com/topic/37708-2015-granite-speed-question/#findComment-268429 Share on other sites More sharing options...
rsb502 Posted November 30, 2014 Share Posted November 30, 2014 5.0! Whew ease up on the skinny pedal, a friend here has 4 new granites,3 mp8, 2 Allison 1 8LL, all get over 6mpg.the best is 6.8 with an mp8 455 Allison and 4.19 rears on 11R24.5's. He has found that your foot has is a huge factor in tire wear and mpg with the Allison trucks. Quote "Any Society that would give up a little LIBERTY to gain a little SECURITY will Deserve Neither and LOSE BOTH" -Benjamin Franklin"If your gonna be STUPID, you gotta be TOUGH" "You cant always get what you want, but if you try sometimes you get what you need" Link to comment https://www.bigmacktrucks.com/topic/37708-2015-granite-speed-question/#findComment-268684 Share on other sites More sharing options...
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