JB4 +mhd BEF Car feels slower than it should be

Fuel-It! · 11-27-2020, 04:40 PM

According to the log you're running a factory flash but have the JB4 set to BEF mode. If you're going to use a factory flash the JB4 menu4 has to be set to 3.

Jake1z · 11-27-2020, 04:42 PM

I downloaded the mhd bef. Should be installed. Every went alright when I flashed the car. Is there another way for me to check?

Fuel-It! · 11-27-2020, 05:10 PM

Quote:

Originally Posted by Jake1z

I downloaded the mhd bef. Should be installed. Every went alright when I flashed the car. Is there another way for me to check?

Yes in MHD when you read codes it will tell you the flash name loaded at the bottom. Did you load PUMP or RACE?

Jake1z · 11-27-2020, 05:11 PM

Just pump gas. I’ll go out side and check in a few

Jake1z · 11-27-2020, 05:19 PM

Pic attached

Fuel-It! · 11-27-2020, 06:50 PM

That's a stock flash. Load IJE0S_RACE from the JB4 BEF download site. You copy it to your phone to load it.

Jake1z · 11-27-2020, 07:10 PM

Ok in the car flashing the race map. I should be good with just running 93 octane? And I really appreciate the help. Hope this fixes my slowness haha

Jake1z · 11-27-2020, 07:39 PM

You are the man! You just restored my faith in this car. I knew something wasn't right, the car wouldnt even break the tires loose when getting on it in first gear. Just took the car down the road and it was all over the place. I did a
quick (and probably useless)log with traction control on and kept getting bogged down... Gonna buy new front cv axle so I can put the drive shaft back in. Totally different car now! thanks man!

https://datazap.me/u/jake1z/race-bef...log=0&data=1-4

Quote:

Originally Posted by Fuel-It!

That's a stock flash. Load IJE0S_RACE from the JB4 BEF download site. You copy it to your phone to load it.

Antetokounmpo · 11-27-2020, 08:13 PM

were your other 335s rwd?

Jake1z · 11-27-2020, 08:15 PM

The one I just sold a couple months ago was an automatic xi e90. My first one was a auto rwd coupe.

Fuel-It! · 11-28-2020, 04:03 PM

Quote:

Originally Posted by Jake1z

You are the man! You just restored my faith in this car. I knew something wasn't right, the car wouldnt even break the tires loose when getting on it in first gear. Just took the car down the road and it was all over the place. I did a
quick (and probably useless)log with traction control on and kept getting bogged down... Gonna buy new front cv axle so I can put the drive shaft back in. Totally different car now! thanks man!

https://datazap.me/u/jake1z/race-bef...log=0&data=1-4

Yes do some longer pulls so we can check out the tuning end but you're on the right path now I think.

Jake1z · 11-28-2020, 06:41 PM

Does the two step disappear with the bef? My two step wouldn't engage for some reason. Tried 3 times

Fuel-It! · 11-29-2020, 05:15 PM

Menu8 in dash determines the 2step RPM

Jake1z · 11-29-2020, 05:17 PM

Ya I adjusted all the way down to like 2k rpms. Wouldn't hold it. I'm gonna reflash the bef tomorrow and see what happens. I read a couple posts with people having issues after bef with the two step.

Fuel-It! · 11-29-2020, 05:50 PM

A good 2step RPM is maybe 4000rpm. Make sure you have the latest v15 JB4 firmware also. Beyond that you can always contact their tech support for help.

11-27-2020, 04:40 PM	#23
Fuel-It! Banned 550 Rep 949 Posts Drives: M4, M5, M2C, X4M, 440i, etc... Join Date: Mar 2019 Location: Phoenix AZ iTrader: (0)	According to the log you're running a factory flash but have the JB4 set to BEF mode. If you're going to use a factory flash the JB4 menu4 has to be set to 3. Attached Images
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11-27-2020, 04:42 PM	#24
Jake1z Private First Class 5 Rep 107 Posts Drives: 2008 335xi e92 Join Date: Oct 2013 Location: 732 NJ iTrader: (1)	I downloaded the mhd bef. Should be installed. Every went alright when I flashed the car. Is there another way for me to check? __________________ Black 09 335xi coupe 6MT Down pipes, Charge Pipe, DCI, JB4, 2 Step, BEF, 3.5 Bar,
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11-27-2020, 05:11 PM	#26
Jake1z Private First Class 5 Rep 107 Posts Drives: 2008 335xi e92 Join Date: Oct 2013 Location: 732 NJ iTrader: (1)	Just pump gas. I’ll go out side and check in a few
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11-27-2020, 05:19 PM	#27
Jake1z Private First Class 5 Rep 107 Posts Drives: 2008 335xi e92 Join Date: Oct 2013 Location: 732 NJ iTrader: (1)	Pic attached Attached Images __________________ Black 09 335xi coupe 6MT Down pipes, Charge Pipe, DCI, JB4, 2 Step, BEF, 3.5 Bar,
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11-27-2020, 06:50 PM	#28
Fuel-It! Banned 550 Rep 949 Posts Drives: M4, M5, M2C, X4M, 440i, etc... Join Date: Mar 2019 Location: Phoenix AZ iTrader: (0)	That's a stock flash. Load IJE0S_RACE from the JB4 BEF download site. You copy it to your phone to load it.
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11-27-2020, 07:10 PM	#29
Jake1z Private First Class 5 Rep 107 Posts Drives: 2008 335xi e92 Join Date: Oct 2013 Location: 732 NJ iTrader: (1)	Ok in the car flashing the race map. I should be good with just running 93 octane? And I really appreciate the help. Hope this fixes my slowness haha __________________ Black 09 335xi coupe 6MT Down pipes, Charge Pipe, DCI, JB4, 2 Step, BEF, 3.5 Bar,
	Appreciate 0 Quote

11-27-2020, 08:13 PM	#31
Antetokounmpo Brigadier General 1550 Rep 3,475 Posts Drives: E90 6MT FBO; '18 F150 Platinum Join Date: Jul 2013 Location: WI iTrader: (3) Garage List 2018 Ford F-150 Pla ... [0.00] 2008 BMW 335xi [0.00]	were your other 335s rwd? __________________ 2008 335xi 6MT \| VRSF Catless DP \| VRSF 7" FMIC \| VRSF CP \| TIAL BOV \| DCI \| MHD 2+ BC Racing BR \| Stoptech 600 \| Firehawk Indy 500 255 Square \| Atric Altimax 225 Sq. 2018 F-150 Platinum 701A \| FX4 \| 3.5 EcoBeast
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11-27-2020, 08:15 PM	#32
Jake1z Private First Class 5 Rep 107 Posts Drives: 2008 335xi e92 Join Date: Oct 2013 Location: 732 NJ iTrader: (1)	The one I just sold a couple months ago was an automatic xi e90. My first one was a auto rwd coupe. __________________ Black 09 335xi coupe 6MT Down pipes, Charge Pipe, DCI, JB4, 2 Step, BEF, 3.5 Bar,
	Appreciate 0 Quote

11-28-2020, 06:41 PM	#34
Jake1z Private First Class 5 Rep 107 Posts Drives: 2008 335xi e92 Join Date: Oct 2013 Location: 732 NJ iTrader: (1)	Does the two step disappear with the bef? My two step wouldn't engage for some reason. Tried 3 times __________________ Black 09 335xi coupe 6MT Down pipes, Charge Pipe, DCI, JB4, 2 Step, BEF, 3.5 Bar,
	Appreciate 0 Quote

11-29-2020, 05:15 PM	#35
Fuel-It! Banned 550 Rep 949 Posts Drives: M4, M5, M2C, X4M, 440i, etc... Join Date: Mar 2019 Location: Phoenix AZ iTrader: (0)	Menu8 in dash determines the 2step RPM
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11-29-2020, 05:17 PM	#36
Jake1z Private First Class 5 Rep 107 Posts Drives: 2008 335xi e92 Join Date: Oct 2013 Location: 732 NJ iTrader: (1)	Ya I adjusted all the way down to like 2k rpms. Wouldn't hold it. I'm gonna reflash the bef tomorrow and see what happens. I read a couple posts with people having issues after bef with the two step. __________________ Black 09 335xi coupe 6MT Down pipes, Charge Pipe, DCI, JB4, 2 Step, BEF, 3.5 Bar,
	Appreciate 0 Quote

11-29-2020, 05:50 PM	#37
Fuel-It! Banned 550 Rep 949 Posts Drives: M4, M5, M2C, X4M, 440i, etc... Join Date: Mar 2019 Location: Phoenix AZ iTrader: (0)	A good 2step RPM is maybe 4000rpm. Make sure you have the latest v15 JB4 firmware also. Beyond that you can always contact their tech support for help.
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