n55 gas milage .. general thoughts

Andrewe92 · 02-06-2014, 10:36 PM

Hey guys so my n55 has 26,000 miles on it.. recently I have been wanting to squeeze a better mpg figure out of it. I seem to be getting about 21 mpg at the moment, which isn't that great considering I have been driving like a grandma lately! I have a ppk but I have my jb4 stage 2 set to map 1 as my daily map. I don't really go into "boost range" or give much throttle.. it's also worth noting that I am reading my mpg average off the idrive screen (cic) .. what can really help reach at least around 24 or 25mpg? I only have the tune! would an intake help? the b3 trans flash? what else.. I run 93 oct.

Jacblack · 02-06-2014, 10:47 PM

Alpina tcu flash will increase mpg, I saw the increase as soon as I did it to mine.

Andrewe92 · 02-06-2014, 10:49 PM

Quote:

Originally Posted by Jacblack

Alpina tcu flash will increase mpg, I saw the increase as soon as I did it to mine.

Could you throw some numbers at me in terms of mpg before and after ?

Jacblack · 02-06-2014, 10:54 PM

Well stock with the reflash I saw 30 at times. With Cobb stage one it was about 26 or so. Now I'm tryna track it with my Protune.

Andrewe92 · 02-06-2014, 10:56 PM

Quote:

Originally Posted by Jacblack

Well stock with the reflash I saw 30 at times. With Cobb stage one it was about 26 or so. Now I'm tryna track it with my Protune.

Wow 30?! That's really high , I'm guessing you are just using the number off Idrive ?

Jacblack · 02-06-2014, 10:57 PM

Yeah but even when I did the math it was pretty much spot on. It's all how you drive with the reflash you are in 6th gear at like 35 mph, keeping the rpms lower seemed to help

tc535i · 02-06-2014, 11:00 PM

Yeah, reflash shifts like crazy. Butter smooth, you only notice thru rpm/engine noise. Definitely conservative when light throttle in D with B3

Andrewe92 · 02-06-2014, 11:03 PM

Quote:

Originally Posted by tc535i

Yeah, reflash shifts like crazy. Butter smooth, you only notice thru rpm/engine noise. Definitely conservative when light throttle in D with B3

I can't wait to flash my car, anyone know much about Intakes and mpg?

evo335xi · 02-07-2014, 07:28 AM

Honestly if you are driving around town it probably won't get much better regardless of what you do. Highway cruising is completely different as far as mileage.

As soon as you give this car gas, the turbo spools. Gas mileage will correspond with how heavy your foot is we all know. If the turbo(s) is working, your mileage will suffer.

Let's not forget the impact of inflation in your tires or the season!

Delta0311 · 02-07-2014, 07:33 AM

I'm getting around 24MPG on the highway. At first I figured there was something wrong with my car because my old tuned E90 328 was getting over 30MPG on the highway.

Infamy · 02-07-2014, 07:57 AM

N54 jb4, CP, dwn pipes, RB pcv, I get 22.1mpg city 35.4mpg highway. Only fill up with Sunoco 93.

Benstuck · 02-07-2014, 11:39 AM

I just have the PE and drive mostly HWY, I average 28-29 mpg. I love it!

Andrewe92 · 02-07-2014, 11:40 AM

Quote:

Originally Posted by Infamy

N54 jb4, CP, dwn pipes, RB pcv, I get 22.1mpg city 35.4mpg highway. Only fill up with Sunoco 93.

I'm also around 22

JETmn · 02-07-2014, 12:06 PM

It varies a ton by driving conditions. In this crappy cold weather I am getting ~21mpg totally stock in the city, but can get over 30mpg if I am nice to it on the highway. If you figure it out the cost of gas isn't a very big deal. Just drive it and have fun!

.mark · 02-07-2014, 02:55 PM

I average 31mpg in my 6MT with intake and map 5 on the highway. That's calculated at the pump, mixed driving.

sy2767 · 02-07-2014, 06:43 PM

In the city where the temps here have been a constant -20c to -35c i get about 10-12 mpg driving like a granny! On the hwy last week driving 115kph i was getting 28-30 mpg. The constant frigid temps totally kill mpg with my car, it rarely reaches full operating temp

glhs379 · 02-07-2014, 07:24 PM

My n55 gets better mpg than my n54 tuned 135. Its actually really good on gas. Way better than I thought it would be.

CombatNinja · 02-08-2014, 08:29 AM

I've been tracking my mileage on fully.com since new and I average 22mpg in mixed driving. Personal best on a tank was close to 31 on a highway trip. N55 335 gets better mileage than the wife's 328i.

mashimarho · 02-08-2014, 11:13 AM

N55 FBO with Jb4. I get about 31 highway.

Andrewe92 · 02-08-2014, 12:24 PM

keep it coming guys!! It seems like 31mpg at highway is the most we'll see

rr006rbc · 02-08-2014, 12:37 PM

How the hell are you guys getting such high gas efficiency. I'm getting like 18mpg with no real engine mods just PPK and PE exhaust. 6 speed manual. But then again I drive like a typical BMW asshole.

glhs379 · 02-08-2014, 01:00 PM

I am in 6 all the time. With the low end of this engine its like u can go from 1 to six. I use six even in town at like 30.

02-06-2014, 10:36 PM	#1
Andrewe92 enthusiast 120 Rep 997 Posts Drives: 2011 e92 lci 335xi Join Date: Feb 2012 Location: NJ iTrader: (0) Garage List 2011 bmw 335 xdrive [10.00]	n55 gas milage .. general thoughts Hey guys so my n55 has 26,000 miles on it.. recently I have been wanting to squeeze a better mpg figure out of it. I seem to be getting about 21 mpg at the moment, which isn't that great considering I have been driving like a grandma lately! I have a ppk but I have my jb4 stage 2 set to map 1 as my daily map. I don't really go into "boost range" or give much throttle.. it's also worth noting that I am reading my mpg average off the idrive screen (cic) .. what can really help reach at least around 24 or 25mpg? I only have the tune! would an intake help? the b3 trans flash? what else.. I run 93 oct.
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02-06-2014, 10:47 PM	#2
Jacblack Captain 91 Rep 664 Posts Drives: F80 COMP Join Date: Dec 2013 Location: Maryland iTrader: (0)	Alpina tcu flash will increase mpg, I saw the increase as soon as I did it to mine.
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02-06-2014, 10:54 PM	#4
Jacblack Captain 91 Rep 664 Posts Drives: F80 COMP Join Date: Dec 2013 Location: Maryland iTrader: (0)	Well stock with the reflash I saw 30 at times. With Cobb stage one it was about 26 or so. Now I'm tryna track it with my Protune.
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02-06-2014, 10:57 PM	#6
Jacblack Captain 91 Rep 664 Posts Drives: F80 COMP Join Date: Dec 2013 Location: Maryland iTrader: (0)	Yeah but even when I did the math it was pretty much spot on. It's all how you drive with the reflash you are in 6th gear at like 35 mph, keeping the rpms lower seemed to help
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02-06-2014, 11:00 PM	#7
tc535i Lieutenant Colonel 222 Rep 1,818 Posts Drives: 2007 335i, 2001 330i, 1995 M3 Join Date: Sep 2013 Location: West Los Angeles iTrader: (1)	Yeah, reflash shifts like crazy. Butter smooth, you only notice thru rpm/engine noise. Definitely conservative when light throttle in D with B3
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02-07-2014, 07:28 AM	#9
evo335xi Lieutenant 36 Rep 451 Posts Drives: 335 Join Date: Mar 2013 Location: Ct iTrader: (1)	Honestly if you are driving around town it probably won't get much better regardless of what you do. Highway cruising is completely different as far as mileage. As soon as you give this car gas, the turbo spools. Gas mileage will correspond with how heavy your foot is we all know. If the turbo(s) is working, your mileage will suffer. Let's not forget the impact of inflation in your tires or the season!
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02-07-2014, 07:33 AM	#10
Delta0311 Banned 7485 Rep 10,119 Posts Drives: 2011 BMW 335xi E92 2016 228xi Join Date: Apr 2009 Location: NJ iTrader: (1)	I'm getting around 24MPG on the highway. At first I figured there was something wrong with my car because my old tuned E90 328 was getting over 30MPG on the highway.
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02-07-2014, 07:57 AM	#11
Infamy underground 69 Rep 333 Posts Drives: alpine white 335 E92 Join Date: Aug 2013 Location: central Jersey iTrader: (1) Garage List 2010 BMW 335i [9.66]	N54 jb4, CP, dwn pipes, RB pcv, I get 22.1mpg city 35.4mpg highway. Only fill up with Sunoco 93. __________________
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02-07-2014, 11:39 AM	#12
Benstuck Lieutenant 73 Rep 510 Posts Drives: 335i N55 E92 Join Date: Jun 2012 Location: Chicago iTrader: (0)	I just have the PE and drive mostly HWY, I average 28-29 mpg. I love it!
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02-07-2014, 12:06 PM	#14
JETmn Lieutenant Colonel 247 Rep 1,595 Posts Drives: 2011 335i xDrive Msport Join Date: Apr 2013 Location: Orlando iTrader: (0) Garage List 2011 335Xi [0.00]	It varies a ton by driving conditions. In this crappy cold weather I am getting ~21mpg totally stock in the city, but can get over 30mpg if I am nice to it on the highway. If you figure it out the cost of gas isn't a very big deal. Just drive it and have fun!
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02-07-2014, 02:55 PM	#15
.mark Private 5 Rep 76 Posts Drives: '11 335i M Sport Join Date: Sep 2013 Location: VA/NC iTrader: (3)	I average 31mpg in my 6MT with intake and map 5 on the highway. That's calculated at the pump, mixed driving.
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02-07-2014, 06:43 PM	#16
sy2767 Major 149 Rep 1,133 Posts Drives: 2013 x5 Join Date: May 2010 Location: manitoba iTrader: (1)	In the city where the temps here have been a constant -20c to -35c i get about 10-12 mpg driving like a granny! On the hwy last week driving 115kph i was getting 28-30 mpg. The constant frigid temps totally kill mpg with my car, it rarely reaches full operating temp
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02-07-2014, 07:24 PM	#17
glhs379 Private 0 Rep 95 Posts Drives: 2013 335i Join Date: Apr 2013 Location: NE Pa. iTrader: (1)	My n55 gets better mpg than my n54 tuned 135. Its actually really good on gas. Way better than I thought it would be.
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02-08-2014, 08:29 AM	#18
CombatNinja Banned 50 Rep 1,556 Posts Drives: e91 328i, e90 328i, e90 335i Join Date: Feb 2011 Location: United States iTrader: (0)	I've been tracking my mileage on fully.com since new and I average 22mpg in mixed driving. Personal best on a tank was close to 31 on a highway trip. N55 335 gets better mileage than the wife's 328i.
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02-08-2014, 11:13 AM	#19
mashimarho BimmerPost Supporting Vendor 2144 Rep 13,877 Posts Drives: E92 M3 & F80 M3 & G82 M4 Join Date: Mar 2010 Location: Lynnwood, WA iTrader: (45) Garage List 2021 BMW G82 M4 [0.00] 2011 BMW E92 M3 [0.00] 2015 BMW F80 M3 [0.00] 2012 BMW 335i xDrive [9.78]	N55 FBO with Jb4. I get about 31 highway. __________________ Mashimarho.com /// Instagram /// Facebook /// Youtube /// sales@mashimarho.com /// (425) 582-7939
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02-08-2014, 12:24 PM	#20
Andrewe92 enthusiast 120 Rep 997 Posts Drives: 2011 e92 lci 335xi Join Date: Feb 2012 Location: NJ iTrader: (0) Garage List 2011 bmw 335 xdrive [10.00]	keep it coming guys!! It seems like 31mpg at highway is the most we'll see
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02-08-2014, 12:37 PM	#21
rr006rbc Colonel 1205 Rep 2,818 Posts Drives: '23 M440i GC Join Date: Mar 2013 Location: California iTrader: (38)	How the hell are you guys getting such high gas efficiency. I'm getting like 18mpg with no real engine mods just PPK and PE exhaust. 6 speed manual. But then again I drive like a typical BMW asshole.
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02-08-2014, 01:00 PM	#22
glhs379 Private 0 Rep 95 Posts Drives: 2013 335i Join Date: Apr 2013 Location: NE Pa. iTrader: (1)	I am in 6 all the time. With the low end of this engine its like u can go from 1 to six. I use six even in town at like 30.
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