BMW E53 X5 3.0i Fuel Economy Capabilities

[johnlacson]

I average 19-20mpg (US) suburban daily driving. 18mpg has been my worst, 21 has been my best.

[Green Dragon]

Here you guys go. Here's 30 mpg. The first part is a spirited entry on the interstate. The second part I made the video continuous to prove a point. Sorry, its a bit long, but watch the whole thing. I engaged auto bahn mode at the end. I also had my Thule Roof rack on....dought!

The best I have ever gotten was 34.5 mpg on a trip for a consistent 200 miles. I had 4.10 diffs and shark injector and exhaust work. My goal is at least 40 mpg and a range of 999. I would like the most efficient e53 X5 in the world title...... the edrive F15 will have me beat. For now. I tune my cars for performance, and efficiency is a welcomed consequence.

Hand calculated mileage is very close to my obc, so I use it. +/- 0.86 I do run my own blend of fuel additives, however, this is 91 octane non-ethanol, with a few ounces of Lucus upper cyclinder lube only. Nothing special.

I'm going to be running a Euro 2 tune for the MS43 DME with headers after Christmas. The other M54 based forums have reported an nice performance bump with no cel's for catless headers and SAP (Secondary Air Pump) deletion. This set-up can pass emissions, and I will explain how in a different thread. I will be putting high flow cats eventually as a responsible compromise.

https://youtu.be/scA4atX8M18

[tecboy99]

Originally Posted by Green Dragon

Here you guys go. Here's 30 mpg. The first part is a spirited entry on the interstate. The second part I made the video continuous to prove a point. Sorry, its a bit long, but watch the whole thing. I engaged auto bahn mode at the end. I also had my Thule Roof rack on....dought!

The best I have ever gotten was 34.5 mpg on a trip for a consistent 200 miles. I had 4.10 diffs and shark injector and exhaust work. My goal is at least 40 mpg and a range of 999. I would like the most efficient e53 X5 in the world title...... the edrive F15 will have me beat. For now. I tune my cars for performance, and efficiency is a welcomed consequence.

Hand calculated mileage is very close to my obc, so I use it. +/- 0.86 I do run my own blend of fuel additives, however, this is 91 octane non-ethanol, with a few ounces of Lucus upper cyclinder lube only. Nothing special.

I'm going to be running a Euro 2 tune for the MS43 DME with headers after Christmas. The other M54 based forums have reported an nice performance bump with no cel's for catless headers and SAP (Secondary Air Pump) deletion. This set-up can pass emissions, and I will explain how in a different thread. I will be putting high flow cats eventually as a responsible compromise.

https://youtu.be/scA4atX8M18

One word...Awesome! You have me convinced. I gotta do the swap, like now...haha Keep us updated with that tune information. Would really love to follow in your footsteps. Also, what mods do you have to your cluster? I like the look.

[johnlacson]

Originally Posted by Green Dragon

Here you guys go. Here's 30 mpg. The first part is a spirited entry on the interstate. The second part I made the video continuous to prove a point. Sorry, its a bit long, but watch the whole thing. I engaged auto bahn mode at the end. I also had my Thule Roof rack on....dought!

The best I have ever gotten was 34.5 mpg on a trip for a consistent 200 miles. I had 4.10 diffs and shark injector and exhaust work. My goal is at least 40 mpg and a range of 999. I would like the most efficient e53 X5 in the world title...... the edrive F15 will have me beat.

HOLY $#!+ That's awesome!

[crystalworks]

That is awesome! Would definitely do that if I had a 3.0 6spd truck.

On a side note... sooooo many warning lights. LOL, my OCD was in full tilt watching that.

[Green Dragon]

Originally Posted by crystalworks

That is awesome! Would definitely do that if I had a 3.0 6spd truck.

On a side note... sooooo many warning lights. LOL, my OCD was in full tilt watching that.

LOL! I know! I was going to address that. They are all false or now fixed except the airbag light, which came on when while doing the passenger door handle carrier. Brake light is off now that I have the new sensor installed, cel due to sap, which is fixed. Damn it Jim! I'm full time in school and working darn near full time so those little things have gotten away from me. I keep the wife's X3 in top shape and deal with mine......

[g300d]

Great, I go to the fuel economy thread to keep my mind off these and here they are lol!

GD, so M52 or M54 headers, either will work just fine on the cylinder head side?

And can you expound on the Euro tune, and where/how to get it?

[Ricky Bobby]

Ryan - awesome video bro and thanks for posting it up, when you get the Euro 2 tune can you Shark over it? Just got my Shark installed and loving it so far, I'm hoping I pick up a few mpg with the AFE intake and my 4.8iS exhaust - Let me know how the Euro 2 tune would pass emissions and I'd definitely consider putting headers with high flow cats on my X5 to have the power increase and more efficiency.

J

[g300d]

Thanks for clearing that up GD!

Looking forward to the Euro reflash write up.

[tecboy99]

Just refreshed my DME today with Euro 2. Pretty scary, but everything worked no problem. Now, I can delete the SAP and put some headers on