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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N57 / M57 Turbo Diesel Discussions - 335d > MPG difference while tuned?



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      03-26-2012, 07:58 PM   #1
Coolieman1220
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MPG difference while tuned?

Thinking about going JBD, would like a flash tune like cobb but unfortunately it's not offered here.

With the fuel prises rising, why not get more miles per gallon?

Under normal driving, have you guys noticed a difference in fuel economy?
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      03-26-2012, 08:27 PM   #2
335dM
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you will not get more MPG with jbd!
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      03-26-2012, 10:36 PM   #3
gruppeM3
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Quote:
Originally Posted by 335dM View Post
you will not get more MPG with jbd!
This is somewhat true. Although if you don't have a twenty pound weight strapped to your foot I'm sure you will get better mileage. I think what he^^^^meant was that it will be too difficult to keep your foot off the gas pedal once you get your car tuned
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      03-27-2012, 08:20 AM   #4
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I've gotten a significant jump in MPG's after the evolve tune. Checkout my fuely page.
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      03-27-2012, 09:05 AM   #5
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I havent noticed any loss of MPG's around the city, and perhaps a slight gain on highway driving.
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      03-27-2012, 09:18 AM   #6
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Quote:
Originally Posted by Coolieman1220 View Post
Thinking about going JBD, would like a flash tune like cobb but unfortunately it's not offered here.

With the fuel prises rising, why not get more miles per gallon?

Under normal driving, have you guys noticed a difference in fuel economy?
Even if the JBD did give you better MPG, you'd have to avoid using the JBD's increased power to do so.

A tune would have to make a very dramatic difference in fuel economy in order for you to recoup the cost of the tune in fuel savings!
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      03-27-2012, 10:47 AM   #7
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Quote:
Originally Posted by Coolieman1220 View Post
Thinking about going JBD, would like a flash tune like cobb but unfortunately it's not offered here.

With the fuel prises rising, why not get more miles per gallon?

Under normal driving, have you guys noticed a difference in fuel economy?
Bout time!

Honestly I have not noticed any difference, well maybe a marginal decrease which I would attribute to driving my car harder now that it pulls like a freight train.
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      03-28-2012, 01:01 AM   #8
greentrbo95gst
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Quote:
Originally Posted by Concentric190 View Post
I've gotten a significant jump in MPG's after the evolve tune. Checkout my fuely page.
How did you get such a high whp number with the evolve tune?
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      03-28-2012, 07:18 AM   #9
Coolieman1220
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Quote:
Originally Posted by Concentric190 View Post
I've gotten a significant jump in MPG's after the evolve tune. Checkout my fuely page.
Yeah I was reading that page the other day. So evolve is a flash tune? Idk how I feel about removing and sending my ecu. I'd really like a Cobb access port tune which is why I've been hesitant about tuning and JBD but I think I'm ready to get that freight train effect others talk about.

How much was evolve?

Even if the cost savings doesn't benefit to repay for the tune, it would only be a perk lol.
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