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Posted: 12/12/2013 10:38:44 PM EDT
[#1]
Quote HistoryQuoted:
A tuner. Folks swear on the Bible that after their tune, they easily get 32-35 MPG towing 18k lbs up Pikes Peak. ETA: Oh nevermind. You have a duramax, That only applies to Cummins. 
I can't remember exactly why, something about injection timing and pulse width, but when you hook a tuner on a truck the onboard computer spits out some stupid high mileage. And it gives ever more inflated numbers the hotter the tune. The only way to do your mileage is by hand and make sure you know your odometer offset per a GPS. |
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Posted: 12/13/2013 5:21:23 AM EDT
[#2]
I get maybe 17 hwy 
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Posted: 12/13/2013 5:22:05 AM EDT
[#3]
Quote HistoryQuoted:
This. Don't waste money on any tuner. EFI is cheaper and much better than any "canned" tuner out there. You will need to get rid of your DPF, though. I deleted mine at 36k and couldn't be happier. Quote HistoryQuoted:
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If not worried about warranty EFIlive tune 40-80HP range and it will get better MPG if you can stop mashing the giggle lever down so far. This. Don't waste money on any tuner. EFI is cheaper and much better than any "canned" tuner out there. You will need to get rid of your DPF, though. I deleted mine at 36k and couldn't be happier. More in depth than most want to go. |
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Posted: 12/13/2013 5:24:03 AM EDT
[#4]
Quote HistoryQuoted:
More in depth than most want to go. Quote HistoryQuoted:
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If not worried about warranty EFIlive tune 40-80HP range and it will get better MPG if you can stop mashing the giggle lever down so far. This. Don't waste money on any tuner. EFI is cheaper and much better than any "canned" tuner out there. You will need to get rid of your DPF, though. I deleted mine at 36k and couldn't be happier. More in depth than most want to go. Doesn't have to be in depth. With the Spade handheld you can buy the unit, buy the tune, and have the unit shipped pre-loaded with your tune(s). It limits retune options since the Spade isn't a V2, but at the end of the day it's still a better tune for about the same price as a new canned tuner. Used, that's a whole different ballgame. I picked up my Superchips for $90. |
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Posted: 12/13/2013 5:31:05 AM EDT
[#5]
Quote HistoryQuoted:
Doesn't have to be in depth. With the Spade handheld you can buy the unit, buy the tune, and have the unit shipped pre-loaded with your tune(s). It limits retune options since the Spade isn't a V2, but at the end of the day it's still a better tune for about the same price as a new canned tuner. Used, that's a whole different ballgame. I picked up my Superchips for $90. Quote HistoryQuoted:
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Quoted:
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If not worried about warranty EFIlive tune 40-80HP range and it will get better MPG if you can stop mashing the giggle lever down so far. This. Don't waste money on any tuner. EFI is cheaper and much better than any "canned" tuner out there. You will need to get rid of your DPF, though. I deleted mine at 36k and couldn't be happier. More in depth than most want to go. Doesn't have to be in depth. With the Spade handheld you can buy the unit, buy the tune, and have the unit shipped pre-loaded with your tune(s). It limits retune options since the Spade isn't a V2, but at the end of the day it's still a better tune for about the same price as a new canned tuner. Used, that's a whole different ballgame. I picked up my Superchips for $90. Sweet. Click here |
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Posted: 12/13/2013 5:31:33 AM EDT
[#6]
Quote HistoryQuoted: http://i76.photobucket.com/albums/j26/louisianarebel14/20130711_191936_zps0c00c83f.jpg I get maybe 17 hwy Have '11 and '12 chevy 2500 ccsb 4wd both get 19-20 hwy. Stock height and stock Michelins though.
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Posted: 12/13/2013 5:35:38 AM EDT
[#7]
This place is the ARFCOM of Duramax Diesel's: DieselPlace Forum
EFI Live seems to be popular for efficiency. |
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Posted: 12/13/2013 5:38:09 AM EDT
[#8]
Quote HistoryQuoted:
Have '11 and '12 chevy 2500 ccsb 4wd both get 19-20 hwy. Stock height and stock Michelins though. Quote HistoryQuoted:
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http://i76.photobucket.com/albums/j26/louisianarebel14/20130711_191936_zps0c00c83f.jpg I get maybe 17 hwy
Have '11 and '12 chevy 2500 ccsb 4wd both get 19-20 hwy. Stock height and stock Michelins though. Tires didnt help. 
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Posted: 12/13/2013 5:44:15 AM EDT
[#9]
Getting your rpms lower at cruising will help also. You can buy and overdrive unit to drop them but it will take you forever to pay yourself back. Gear vendors makes a nice unit.
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Posted: 12/13/2013 5:44:24 AM EDT
[#10]
Quote HistoryNot anymore. Diesel Place used to be full of accurate technical knowlwdge, but it went to hell quickly after Autoforums bought it a few years ago. I used to be a moderator there. The technical advice at Diesel Place today is exactly like GD is here. The top tier Duramax technical resource, bar none, is Pat McSwain's site, Duramax Diesels: http://www.duramaxdiesels.com/forum/ And ditto to the advice of a good tow tune for mileage improvement. 
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Posted: 12/13/2013 5:45:07 AM EDT
[#11]
Quote HistoryQuoted:
Not anymore. Diesel Place used to be full of accurate technical knowlwdge, but it went to hell quickly after Autoforums bought it a few years ago. I used to be a moderator there. The technical advice at Diesel Place today is exactly like GD is here. The top tier Duramax technical resource, bar none, is Pat McSwain's site, Duramax Diesels: http://www.duramaxdiesels.com/forum/ And ditto to the advice of a good tow tune for mileage improvement. Quote HistoryQuoted:
Not anymore. Diesel Place used to be full of accurate technical knowlwdge, but it went to hell quickly after Autoforums bought it a few years ago. I used to be a moderator there. The technical advice at Diesel Place today is exactly like GD is here. The top tier Duramax technical resource, bar none, is Pat McSwain's site, Duramax Diesels: http://www.duramaxdiesels.com/forum/ And ditto to the advice of a good tow tune for mileage improvement. Yep. Sad aint it?
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Posted: 12/13/2013 5:45:59 AM EDT
[#12]
Quote HistoryQuoted:
I had a 06 and a chip increased me to like 25 No it didn't. |
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Posted: 12/13/2013 5:59:58 AM EDT
[#13]
Quote HistoryQuote HistoryStarts out a hundo cheaper PPE's canned tuners come out about the same price ... Quoted:
I can't remember exactly why, something about injection timing and pulse width, but when you hook a tuner on a truck the onboard computer spits out some stupid high mileage. And it gives ever more inflated numbers the hotter the tune. The only way to do your mileage is by hand and make sure you know your odometer offset per a GPS. Yep, my truck read high 20's all the time after a hotter canned tune. |
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Posted: 12/13/2013 6:02:01 AM EDT
[#14]
Quote HistoryQuoted:
Not anymore. Diesel Place used to be full of accurate technical knowlwdge, but it went to hell quickly after Autoforums bought it a few years ago. I used to be a moderator there. The technical advice at Diesel Place today is exactly like GD is here. The top tier Duramax technical resource, bar none, is Pat McSwain's site, Duramax Diesels: http://www.duramaxdiesels.com/forum/ And ditto to the advice of a good tow tune for mileage improvement. Quote HistoryQuoted:
Not anymore. Diesel Place used to be full of accurate technical knowlwdge, but it went to hell quickly after Autoforums bought it a few years ago. I used to be a moderator there. The technical advice at Diesel Place today is exactly like GD is here. The top tier Duramax technical resource, bar none, is Pat McSwain's site, Duramax Diesels: http://www.duramaxdiesels.com/forum/ And ditto to the advice of a good tow tune for mileage improvement. Well shit. I haven't really been on there since 08 as that's when I sold my Dmax. Glad there is a new place! |
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Posted: 12/13/2013 6:03:13 AM EDT
[#15]
Quote HistoryQuoted:
Starts out a hundo cheaper PPE's canned tuners come out about the same price ... Yep, my truck read high 20's all the time after a hotter canned tune. Quote HistoryQuoted:
Starts out a hundo cheaper PPE's canned tuners come out about the same price ... Quoted:
I can't remember exactly why, something about injection timing and pulse width, but when you hook a tuner on a truck the onboard computer spits out some stupid high mileage. And it gives ever more inflated numbers the hotter the tune. The only way to do your mileage is by hand and make sure you know your odometer offset per a GPS. Yep, my truck read high 20's all the time after a hotter canned tune. No delete on that one. |
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Posted: 12/13/2013 6:04:07 AM EDT
[#16]
Good luck with a tune.
We're getting ready to do injectors, head gaskets and studs on my buddy's Duramax. |
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Posted: 12/13/2013 6:06:57 AM EDT
[#17]
Quote HistoryQuoted:
Good luck with a tune. We're getting ready to do injectors, head gaskets and studs on my buddy's Duramax. How did he blow all that up? 
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Posted: 12/13/2013 6:08:06 AM EDT
[#18]
Quote HistoryQuoted:
How did he blow all that up? Quote HistoryQuoted:
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Good luck with a tune. We're getting ready to do injectors, head gaskets and studs on my buddy's Duramax. How did he blow all that up? Easy, he bought an LLY
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Posted: 12/13/2013 6:09:16 AM EDT
[#19]
Quote HistoryQuoted: Tires didnt help. http://i76.photobucket.com/albums/j26/louisianarebel14/20130929_114952_zps8ac84ebd.jpg Quote HistoryQuoted: Quoted: Quoted: http://i76.photobucket.com/albums/j26/louisianarebel14/20130711_191936_zps0c00c83f.jpg I get maybe 17 hwy Have '11 and '12 chevy 2500 ccsb 4wd both get 19-20 hwy. Stock height and stock Michelins though. Tires didnt help. http://i76.photobucket.com/albums/j26/louisianarebel14/20130929_114952_zps8ac84ebd.jpg No but they look really good. |
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Posted: 12/13/2013 6:09:55 AM EDT
[#20]
Get an internet connection. Everybody with a diesel and access to the internet gets 25-30 mpg!
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Posted: 12/13/2013 6:11:53 AM EDT
[#21]
Quote HistoryQuoted:
Getting your rpms lower at cruising will help also. You can buy and overdrive unit to drop them but it will take you forever to pay yourself back. Gear vendors makes a nice unit. If, or when I guess, I do the transmission in my truck, it's getting a six-speed Allison. |
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Posted: 12/13/2013 10:17:34 AM EDT
[#22]
Quote HistoryQuoted:
If, or when I guess, I do the transmission in my truck, it's getting a six-speed Allison. Quote HistoryQuoted:
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Getting your rpms lower at cruising will help also. You can buy and overdrive unit to drop them but it will take you forever to pay yourself back. Gear vendors makes a nice unit. If, or when I guess, I do the transmission in my truck, it's getting a six-speed Allison. Don't you have a Ford Excursion? Have fun with that swap
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Posted: 12/13/2013 10:54:15 AM EDT
[#23]
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Don't you have a Ford Excursion? Have fun with that swap Quote HistoryQuoted:
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Getting your rpms lower at cruising will help also. You can buy and overdrive unit to drop them but it will take you forever to pay yourself back. Gear vendors makes a nice unit. If, or when I guess, I do the transmission in my truck, it's getting a six-speed Allison. Don't you have a Ford Excursion? Have fun with that swap Hell no. '03 Dmax. It must be really broke because it only gets about 15-17 mpg. 
Hand-calculated with a 3% positive offset on the odometer.
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Posted: 12/13/2013 10:59:05 AM EDT
[#24]
Quote HistoryQuoted:
Hell no. '03 Dmax. It must be really broke because it only gets about 15-17 mpg.
Hand-calculated with a 3% positive offset on the odometer. Quote HistoryQuoted:
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Quoted:
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Getting your rpms lower at cruising will help also. You can buy and overdrive unit to drop them but it will take you forever to pay yourself back. Gear vendors makes a nice unit. If, or when I guess, I do the transmission in my truck, it's getting a six-speed Allison. Don't you have a Ford Excursion? Have fun with that swap Hell no. '03 Dmax. It must be really broke because it only gets about 15-17 mpg.
Hand-calculated with a 3% positive offset on the odometer. Oh, okay--that makes more sense now. Otherwise I'd think you were crazy. Will you try to do the standalone conversion and run a separate TCM to talk to your BCM/ECM, or the goofy 5 to 6 spd conversion that Merchant has on your existing one? I blame your single stage turbo for lack of mileage. |
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Posted: 12/13/2013 3:35:38 PM EDT
[#25]
Quote HistoryQuoted:
Oh, okay--that makes more sense now. Otherwise I'd think you were crazy. Will you try to do the standalone conversion and run a separate TCM to talk to your BCM/ECM, or the goofy 5 to 6 spd conversion that Merchant has on your existing one? I blame your single stage turbo for lack of mileage. Quote HistoryQuoted:
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Getting your rpms lower at cruising will help also. You can buy and overdrive unit to drop them but it will take you forever to pay yourself back. Gear vendors makes a nice unit. If, or when I guess, I do the transmission in my truck, it's getting a six-speed Allison. Don't you have a Ford Excursion? Have fun with that swap Hell no. '03 Dmax. It must be really broke because it only gets about 15-17 mpg.
Hand-calculated with a 3% positive offset on the odometer. Oh, okay--that makes more sense now. Otherwise I'd think you were crazy. Will you try to do the standalone conversion and run a separate TCM to talk to your BCM/ECM, or the goofy 5 to 6 spd conversion that Merchant has on your existing one? I blame your single stage turbo for lack of mileage. Haven't gotten there yet. There's some other stuff on the plate first, anyway. It does take some fuel to spin this thing. Does pretty good on the highway, but unless its babied around town it's no bueno. |
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