JB+ Gas Milage

Ghines1279 · 06-16-2009, 07:35 PM

So I just put in my JB+ (at default setting). drove it about 20 miles last night. Then today I drove up to Miami, which i do about twice a month. The crazy thing is that i got on average for the whole trip 33 MPG. And when I had it on Cruise In 6th gear going about 65 i was getting about 36-37 mpg.I usually get like 23-26 average and cruising is about 31. I know it takes like a few days for the JB to adapt and maybe this was just a fluke, but is anyone else with a JB product getting good MPG? I searched around and all i could find was people bitching that it went down with Tunes.

golfinz · 06-16-2009, 07:50 PM

Coincidence....no way a tune, especially the JB+, would net you more mpg, unless the tune was setup specifically for that. People get less mpg because their car is faster and they love pressing the right pedal

Ghines1279 · 06-16-2009, 07:57 PM

Quote:

Originally Posted by golfinz

Coincidence....no way a tune, especially the JB+, would net you more mpg, unless the tune was setup specifically for that. People get less mpg because their car is faster and they love pressing the right pedal

I mean, i make the same trip a couple times a month and its the only thing that is different on the car. OR, maybe its the Nitrogen in my tires...

golfinz · 06-16-2009, 08:07 PM

I still check it off to coincidence...but thats cool that you got more mpg...gas prices FTL

MSPORTWORLD · 06-17-2009, 12:44 PM

Could also be the difference in winter grade vs summer grade gasoline. Summer formulation usually nets more mpgs in combination with the fact that the car doesn't need as much time to warm up.

TurboCraig · 08-31-2011, 05:29 PM

Ghines- can you check your mpg average on your display and let me know if you are getting a 99.9 mpg average? This is what mine is reading and the only change is a JB+... Weird I know..if it makes sense.

Thanks

dsm25psi · 08-31-2011, 05:36 PM

I also gained about 4mpg after jb+ install

Ghines1279 · 08-31-2011, 10:01 PM

wow, this was a while back, funny i havent been on here in ages either. when i restart my MPG average it will go to 99.9 for like 2 seconds then to whatever it is at the moment and later average out and not change at all at the end of the tank. if yours is reading 99.9 all the time, then something is wrong with your trip computer and how it calculates fuel. I dont want to sound like a smart ass, but you are driving this right? its not just in the drive way, because you have to drive for it to work. Also to add, i went with procede and im really happy, I can witch back to stock maps and performance maps in the car. I put it in stock and cruised up to miami and it was around 31 mpg through the keys, put it on the performance map and it was 37.7 for 150 miles. Pretty sweet. on the flip side, when i get "spirited" or drive in the city it drops to 17ish. I really just think our cars are made to run at higher boost, BMW really wanted to keep this car below 300.

06-16-2009, 07:35 PM	#1
Ghines1279 Second Lieutenant 7 Rep 238 Posts Drives: F30 335i Join Date: Mar 2009 Location: SAN DIEGO! iTrader: (5) Garage List 2007 e92 335i [0.00]	JB+ Gas Milage So I just put in my JB+ (at default setting). drove it about 20 miles last night. Then today I drove up to Miami, which i do about twice a month. The crazy thing is that i got on average for the whole trip 33 MPG. And when I had it on Cruise In 6th gear going about 65 i was getting about 36-37 mpg.I usually get like 23-26 average and cruising is about 31. I know it takes like a few days for the JB to adapt and maybe this was just a fluke, but is anyone else with a JB product getting good MPG? I searched around and all i could find was people bitching that it went down with Tunes.
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06-16-2009, 07:50 PM	#2
golfinz Captain 235 Rep 759 Posts Drives: Tanzanite M3 Join Date: Apr 2009 Location: usa iTrader: (3)	Coincidence....no way a tune, especially the JB+, would net you more mpg, unless the tune was setup specifically for that. People get less mpg because their car is faster and they love pressing the right pedal
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06-16-2009, 08:07 PM	#4
golfinz Captain 235 Rep 759 Posts Drives: Tanzanite M3 Join Date: Apr 2009 Location: usa iTrader: (3)	I still check it off to coincidence...but thats cool that you got more mpg...gas prices FTL
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06-17-2009, 12:44 PM	#5
MSPORTWORLD Major 232 Rep 1,481 Posts Drives: '11 M3 MW/FR - '12 M3 FO/SC Join Date: Dec 2008 Location: California iTrader: (6) Garage List 2004 Honda Hornet [0.00] 2003 Chevrolet 2500 ... [0.00] 2011 BMW S1000RR [0.00] 2011 BMW E92 M3 [0.00] 2012 BMW E92 M3 [0.00]	Could also be the difference in winter grade vs summer grade gasoline. Summer formulation usually nets more mpgs in combination with the fact that the car doesn't need as much time to warm up. __________________ IG: @msportworld MSPORTWORLD YouTube Channel 2012 M3 ED Thread 2011 M3 ED Thread
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08-31-2011, 05:29 PM	#6
TurboCraig First Lieutenant 6 Rep 343 Posts Drives: 09 E90 335i Join Date: Mar 2011 Location: Indiana iTrader: (6)	Ghines- can you check your mpg average on your display and let me know if you are getting a 99.9 mpg average? This is what mine is reading and the only change is a JB+... Weird I know..if it makes sense. Thanks
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08-31-2011, 05:36 PM	#7
dsm25psi Private First Class 6 Rep 124 Posts Drives: 335I, IS300, E30 Join Date: Sep 2010 Location: Charlotte,NC iTrader: (1)	I also gained about 4mpg after jb+ install __________________ 135i with mods. Evo 8 804hp GONE supra sold evo's sold 335i sold
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08-31-2011, 10:01 PM	#8
Ghines1279 Second Lieutenant 7 Rep 238 Posts Drives: F30 335i Join Date: Mar 2009 Location: SAN DIEGO! iTrader: (5) Garage List 2007 e92 335i [0.00]	wow, this was a while back, funny i havent been on here in ages either. when i restart my MPG average it will go to 99.9 for like 2 seconds then to whatever it is at the moment and later average out and not change at all at the end of the tank. if yours is reading 99.9 all the time, then something is wrong with your trip computer and how it calculates fuel. I dont want to sound like a smart ass, but you are driving this right? its not just in the drive way, because you have to drive for it to work. Also to add, i went with procede and im really happy, I can witch back to stock maps and performance maps in the car. I put it in stock and cruised up to miami and it was around 31 mpg through the keys, put it on the performance map and it was 37.7 for 150 miles. Pretty sweet. on the flip side, when i get "spirited" or drive in the city it drops to 17ish. I really just think our cars are made to run at higher boost, BMW really wanted to keep this car below 300.
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