HORRIBLE MPG... What could be the causes?

cocoturkey · 02-19-2010, 02:43 PM

i'm having an average of 10.8 mpg.... my mpg was improved to 18.6mpg when I replaced my hpfp a few months ago. during the past two months, my mpg has decreased to 10.8 mpg. I did not change my driving style at all... what could be the problem?? all my other friends (who drive e92 335i too) are having 17.8mpg to 18.5mpg. a full tank of gas are only good for less than 190 miles...

i sanned my car with bt cable, but i didn't get any error code... i don't know what I should do or where to check for possible causes....

please help. Thank you!!

dlbrooks18 · 02-19-2010, 02:48 PM

what are your mods?

MrWhite1015 · 02-19-2010, 02:48 PM

forza1976 · 02-19-2010, 02:50 PM

Quote:

Originally Posted by MrWhite1015

Nice, that's funny!

MrWhite1015 · 02-19-2010, 02:52 PM

its probably the HPFP again ... just not throwing codes

lol glad you liked the lead foot

!

ridin135 · 02-19-2010, 04:15 PM

Most likely your right foot as I am getting 23mpg city, granted my car is alot lighter than yours

eclipsor · 02-19-2010, 07:11 PM

Quote:

Originally Posted by ridin135

Most likely your right foot as I am getting 23mpg city, granted my car is alot lighter than yours

cocoturkey · 02-20-2010, 10:22 PM

Quote:

Originally Posted by dlbrooks18

what are your mods?

my mods are:
ar design catelss dps
ams full catless exhaust (with customized electronic control vavle)
dci
piggyback
aa FMIC
ar design OC
19" HRE P40
KW V3
Meth Kit

p.s. i have my electronic control vavle closed during city drive to gain more low end torqe and quietness...

Eric@AMS · 02-25-2010, 12:58 PM

What is that control valve closing off?

Eric

huyner328 · 02-25-2010, 01:02 PM

You have low MPG because you have a lead right foot.

shifterboy45 · 02-25-2010, 01:32 PM

modded and concerned with good mileage.. hmmm

i think those working concepts are dyameterically opposed

pearlwhites · 02-26-2010, 09:03 AM

Winter gas also sucks...

ArmyBimmerDude · 02-26-2010, 10:24 AM

You sure you're not driving an M3? 10mpg average is terrible for a 335.

02-19-2010, 02:43 PM	#1
cocoturkey Lieutenant 24 Rep 441 Posts Drives: 08' e92 335i Join Date: Jan 2008 Location: Taipei iTrader: (0)	HORRIBLE MPG... What could be the causes? i'm having an average of 10.8 mpg.... my mpg was improved to 18.6mpg when I replaced my hpfp a few months ago. during the past two months, my mpg has decreased to 10.8 mpg. I did not change my driving style at all... what could be the problem?? all my other friends (who drive e92 335i too) are having 17.8mpg to 18.5mpg. a full tank of gas are only good for less than 190 miles... i sanned my car with bt cable, but i didn't get any error code... i don't know what I should do or where to check for possible causes.... please help. Thank you!!
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02-19-2010, 02:48 PM	#2
dlbrooks18 Brigadier General 161 Rep 3,736 Posts Drives: e90 335i Join Date: Nov 2008 Location: Los Angeles iTrader: (2)	what are your mods? __________________ 2008 E90 335
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02-19-2010, 02:48 PM	#3
MrWhite1015 Major General 166 Rep 6,020 Posts Drives: MINIVAN Join Date: Aug 2008 Location: Westchester NY iTrader: (21) Garage List 2008 335Xi Coupe [0.00]	__________________
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02-19-2010, 02:52 PM	#5
MrWhite1015 Major General 166 Rep 6,020 Posts Drives: MINIVAN Join Date: Aug 2008 Location: Westchester NY iTrader: (21) Garage List 2008 335Xi Coupe [0.00]	its probably the HPFP again ... just not throwing codes lol glad you liked the lead foot ! __________________
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02-19-2010, 04:15 PM	#6
ridin135 Colonel 131 Rep 2,408 Posts Drives: Depends on the day Join Date: Dec 2008 Location: Greenville iTrader: (7)	Most likely your right foot as I am getting 23mpg city, granted my car is alot lighter than yours
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02-25-2010, 12:58 PM	#9
Eric@AMS Captain 71 Rep 726 Posts Drives: 2007 335i Join Date: Sep 2008 Location: West Chicago, IL iTrader: (5)	What is that control valve closing off? Eric
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02-25-2010, 01:02 PM	#10
huyner328 Former N54 Fanatic 84 Rep 1,927 Posts Drives: Slow Join Date: Nov 2009 Location: NoVA iTrader: (8) Garage List 2014 Range Rover Sp ... [10.00] 2012 Fiat Abarth [10.00]	You have low MPG because you have a lead right foot. __________________ FREE MIXES! https://soundcloud.com/djbradpiff
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02-25-2010, 01:32 PM	#11
shifterboy45 Major 23 Rep 1,179 Posts Drives: 2009 335i Coupe Join Date: Feb 2009 Location: North by Northwest iTrader: (0)	modded and concerned with good mileage.. hmmm i think those working concepts are dyameterically opposed
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02-26-2010, 09:03 AM	#12
pearlwhites First Lieutenant 12 Rep 383 Posts Drives: 1M, 06 CTT, 07 A8L Join Date: Mar 2007 Location: NY iTrader: (3)	Winter gas also sucks...
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02-26-2010, 10:24 AM	#13
ArmyBimmerDude Major General 152 Rep 5,501 Posts Drives: Lola Join Date: Nov 2006 Location: Georgia iTrader: (3) Garage List 02/2007 E92 335i [0.00]	You sure you're not driving an M3? 10mpg average is terrible for a 335. __________________ 2007 E92 Montego Blue 335i
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