N54 Stock DME Flex Fuel

Tuningservice.no

Specialist
Nov 2, 2016
60
24
0
40
Well i'd have the tuner send you a startup map. Install and wire everything. Make sure everything is working like it's supposed to, then go get it tuned.

Nothing is more annoying having to troubleshoot something when you are about to tune.
 
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NoGuru

Captain
Jan 9, 2018
1,212
593
0
Just North of Detroit
Ride
BMW 335is
Ok - I need some guidance from the hive mind regarding flex fuel install, and a little context along with my question:

1. I’m almost finished with my N54 build (forged internals, sleeves, insert, built head, cams, ARP everything), single top mount.
2. I will run PI, stage 3 pump, boost box, and flex fuel sensor. I also plan to have Motiv dyno tune the car after break in.
3. Should I wait to have Motiv install the flex fuel module when they dyno tune the car - after the break in?

Just looking for a little guidance....
Does not matter which way you go as long as you have the Flex fuel map installed when you install the sensor.
 

Jeffman

Major
Jan 7, 2017
1,629
1
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This is what I did:
1. First purchase the FlexFuel module from the Google Play store.
2. Purchase or have a FlexFuel map ready to load. So here is where you’d flash your V1.0 map from your tuner prior to tuning.
3. Flash the FlexFuel map, but don’t start the engine after flashing.
4. Disconnect the battery.
5. Wire in the Motiv FlexFuel module into the DME and hook it up to the ethanol content sensor.
6. Reconnect the battery and start the engine.
 

v.i.335is

Private
Jan 12, 2017
37
19
0
Been out of the loop for a little while..
Is the FF option in mhd still going through the beta?
Cause I'm seeing people saying that they have the latest update which is 1.70 and I'm still on 1.66. Is it still in testing, or am I missing something. Cause I'm not seeing it as an update when I open the app.

Excuse my blonde moment
 

TheAllOriginal

Private
Dec 15, 2016
48
13
0
Baltimore, MD
Been out of the loop for a little while..
Is the FF option in mhd still going through the beta?
Cause I'm seeing people saying that they have the latest update which is 1.70 and I'm still on 1.66. Is it still in testing, or am I missing something. Cause I'm not seeing it as an update when I open the app.

Excuse my blonde moment
It has moved from a closed beta to an open beta. Its on its final phase of testing before being fully released, dunno when that is though.
 
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martymil

Major General
Sep 6, 2017
3,331
1,912
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Down Under
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S65 1m
Im about to buy this setup to tune for flex fuel but before I do have you guys tested it with the ikmos ecu ?

Have you guys updated the pr coil checkbox settings for this ecu aswell as it wasnt set correctly and my tuner had to write them in manualy
 

NoGuru

Captain
Jan 9, 2018
1,212
593
0
Just North of Detroit
Ride
BMW 335is
What were the codes?
Looks like basic misfires? IMG_2437.JPG
 

tan_rich

Specialist
Feb 6, 2018
89
18
0
Ride
335is
Is cold start supposed to be deactivated with flex fuel? I don’t have it ticked in the MHD settings but my car hasn’t cold started the past 3 times after over night and 8 hour + periods. Running MHD STG2+ OTS
 
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