Gas Mileage gone down with JB2H?

Siciliano611 · 02-27-2008, 05:03 PM

I installed the JB2H on MOnday and noticed that it seems I went through the rest of my tank of gas (probably 1/3rd of a tank) way too fast compared to normal. When I filled up earlier today in the limited time I drove (10 miles at most) I reset the MPG gauge and in that time period I am currently sitting at 16.8 MPG, granted none of this was highway....Just wanted opinions from other JB2 owners on gas mileage

mitchius · 02-27-2008, 05:05 PM

I've experienced exactly the same thing

I will be removing the "H" as soon as I get some warmer weather.

val3ntin3s · 02-27-2008, 05:29 PM

my avg mpg after installing JB2 has gone up about 1-2MPG under normal driving. I only installed it last friday and has filled up once since installation. Another thing i noticed after installing JB2 was that the temp varies now between 220-245 depending on how i'm driving.

Mr. 5 · 02-27-2008, 05:32 PM

I would say that the mpg dropping is a given after installing a JB2 or any variation of it. You're goiong to have more fun with it especially at the beginning.

Even after normal driving though, I saw a 1-2 mpg drop.
It's a trade off though just like anything else.

sambonator · 02-27-2008, 05:35 PM

I wouldn't give up the safety of JB2 running a little rich for 1-2mpg.

Besides, mine has always been around 15-16mpg avg

.

02-27-2008, 05:03 PM	#1
Siciliano611 Major 396 Rep 1,303 Posts Drives: SMB M6GC Join Date: Mar 2007 Location: ATL iTrader: (3)	Gas Mileage gone down with JB2H? I installed the JB2H on MOnday and noticed that it seems I went through the rest of my tank of gas (probably 1/3rd of a tank) way too fast compared to normal. When I filled up earlier today in the limited time I drove (10 miles at most) I reset the MPG gauge and in that time period I am currently sitting at 16.8 MPG, granted none of this was highway....Just wanted opinions from other JB2 owners on gas mileage
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02-27-2008, 05:05 PM	#2
mitchius Private First Class 3 Rep 119 Posts Drives: 335xi 6mt Join Date: Jun 2007 Location: Bucks County, Pa iTrader: (9)	I've experienced exactly the same thing I will be removing the "H" as soon as I get some warmer weather.
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02-27-2008, 05:29 PM	#3
val3ntin3s Second Lieutenant 35 Rep 263 Posts Drives: 2007 E92 335i SP Join Date: Feb 2006 Location: So cal iTrader: (0)	my avg mpg after installing JB2 has gone up about 1-2MPG under normal driving. I only installed it last friday and has filled up once since installation. Another thing i noticed after installing JB2 was that the temp varies now between 220-245 depending on how i'm driving. __________________ 2012 F10 535i \| Alpine White \| Black Dakota Leather \| Dark Wood Trim \| Anthracite Headliner \| ZPP \| ZSP \| Tech \| Rear Sunshades \| SiriusXM
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02-27-2008, 05:32 PM	#4
Mr. 5 Modder Raider 753 Rep 8,633 Posts Drives: M3 Join Date: Apr 2007 Location: Surf City, HB iTrader: (31) Garage List 2007 e90 335i [8.00]	I would say that the mpg dropping is a given after installing a JB2 or any variation of it. You're goiong to have more fun with it especially at the beginning. Even after normal driving though, I saw a 1-2 mpg drop. It's a trade off though just like anything else. __________________ e36 M3 Coupe, e36 325i Sedan e90 335i--SOLD Best 60-130-------------9.15 Seconds------------------WWW.MR5RACING.COM
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02-27-2008, 05:35 PM	#5
sambonator Samtaro! 121 Rep 2,601 Posts Drives: 2014 F32 N55 Alpinweiß Join Date: May 2007 Location: Newport Beach, CA, USA iTrader: (7)	I wouldn't give up the safety of JB2 running a little rich for 1-2mpg. Besides, mine has always been around 15-16mpg avg . __________________
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