Updated jb4; low boost now

Bmw3thirty5 · 07-10-2013, 10:10 PM

I just updated my jb4 g5 iso to the most recent firmware which is #23. While I did this, I also changed Future Use B to 2 and Fuel Open Loop to 75 due to the 29F2 and 29E2 codes I was getting. Those were the instructions from BMS if you are getting those codes. I test drive the car and no matter what map, it was only getting 7-8PSI, I'm guessing stock boost. Any ideas?

fazman · 07-10-2013, 10:57 PM

You broke it!

Bmw3thirty5 · 07-10-2013, 10:58 PM

Quote:

Originally Posted by fazman

You broke it!

Awe shucks!

az335iat · 07-10-2013, 11:02 PM

Check what map your on.

Bmw3thirty5 · 07-10-2013, 11:03 PM

Quote:

Originally Posted by az335iat

Check what map your on.

I said no matter what map, it was getting 7-8psi.

MasterWang · 07-11-2013, 03:41 AM

I was getting 7-8 psi in every map using the latest firmware, but here is my story. I updated the firmware, drove straight to an e85 gas station and put in 40% e85. I got on the highway immediately and tried map 7 for the first time.

It hit 17+ psi, then around 5000rpm, psi dropped to 7-8 psi all the way to redline.
After that no matter which map I chose, I couldn't go above 7-8psi.

I pulled over, turned off the car, then restarted right away. Same thing.

I pulled over again, but this time let the car sit about 5-10 minutes then got back on the highway. Put it to map 5 and it started hitting normal boost again.

I'm really not sure what exactly happened and how it fixed itself, but maybe your car will be fine tomorrow morning?

enrita · 07-11-2013, 04:37 AM

is the ses light flashing ? that seems like a failsafe is triggered

Bmw3thirty5 · 07-11-2013, 06:22 AM

Quote:

Originally Posted by enrita

is the ses light flashing ? that seems like a failsafe is triggered

It did flash the first time I pulled. I restarted car and it never did it again

nvn · 07-11-2013, 06:50 AM

what mods do you have? maybe increase your failsafe to 19.

Bmw3thirty5 · 07-11-2013, 07:03 AM

Quote:

Originally Posted by nvn

what mods do you have? maybe increase your failsafe to 19.

I was on 93. I only get 15psi on 93 lol

Bmw3thirty5 · 07-11-2013, 10:01 AM

Quote:

Originally Posted by MasterWang

I was getting 7-8 psi in every map using the latest firmware, but here is my story. I updated the firmware, drove straight to an e85 gas station and put in 40% e85. I got on the highway immediately and tried map 7 for the first time.

It hit 17+ psi, then around 5000rpm, psi dropped to 7-8 psi all the way to redline.
After that no matter which map I chose, I couldn't go above 7-8psi.

I pulled over, turned off the car, then restarted right away. Same thing.

I pulled over again, but this time let the car sit about 5-10 minutes then got back on the highway. Put it to map 5 and it started hitting normal boost again.

I'm really not sure what exactly happened and how it fixed itself, but maybe your car will be fine tomorrow morning?

Same thing just happened. I drove the car this morning and the boost was hitting target. That's so weird. Maybe we should talk to Terry and see why this happened

nvn · 07-11-2013, 10:27 AM

Quote:

Originally Posted by Bmw3thirty5

I was on 93. I only get 15psi on 93 lol

Sorry I was referring to MasterWang's post. Try reloading the firmware and reset the defaults.

07-10-2013, 10:10 PM	#1
Bmw3thirty5 Private 6 Rep 84 Posts Drives: 335 Join Date: Jul 2013 Location: Ny iTrader: (0)	Updated jb4; low boost now I just updated my jb4 g5 iso to the most recent firmware which is #23. While I did this, I also changed Future Use B to 2 and Fuel Open Loop to 75 due to the 29F2 and 29E2 codes I was getting. Those were the instructions from BMS if you are getting those codes. I test drive the car and no matter what map, it was only getting 7-8PSI, I'm guessing stock boost. Any ideas?
	Appreciate 0 Tweet Quote

07-10-2013, 11:02 PM	#4
az335iat Boost For Fun 0 Rep 32 Posts Drives: 2009 335i Coupe AT Join Date: Feb 2009 Location: Phoenix, AZ iTrader: (0)	Check what map your on. __________________ 09 335i Coupe JB4 G5, Meth, DCI 08 335i Sedan 12.035 at 118.14 1.92 60 foot JB4 Meth CM5, M10 Nitto NT05R on K1's, SOLD.
	Appreciate 0 Quote

07-11-2013, 03:41 AM	#6
MasterWang Captain 137 Rep 926 Posts Drives: F06 M6 Join Date: Jan 2011 Location: Overland Park, KS iTrader: (2)	I was getting 7-8 psi in every map using the latest firmware, but here is my story. I updated the firmware, drove straight to an e85 gas station and put in 40% e85. I got on the highway immediately and tried map 7 for the first time. It hit 17+ psi, then around 5000rpm, psi dropped to 7-8 psi all the way to redline. After that no matter which map I chose, I couldn't go above 7-8psi. I pulled over, turned off the car, then restarted right away. Same thing. I pulled over again, but this time let the car sit about 5-10 minutes then got back on the highway. Put it to map 5 and it started hitting normal boost again. I'm really not sure what exactly happened and how it fixed itself, but maybe your car will be fine tomorrow morning?
	Appreciate 0 Quote

07-11-2013, 04:37 AM	#7
enrita Major General 161 Rep 7,377 Posts Drives: 335i - Big turbos Join Date: Sep 2008 Location: Italian in Sweden iTrader: (0)	is the ses light flashing ? that seems like a failsafe is triggered __________________ 07 335i AT - MOTIV 750 - MHD E85 BMS flash - BMS PI - JB4G5 - Okada Coils - NGK 5992 Plugs - Helix IC - Snow Stg. 3 - Stett CP - Custom midpipes with 100 HJS Cats - Bastuck Quad - PSS10 - QUAIFE LSD - BMS OCC - Forge DVs - AR OC - ALCON BBK - M3 Chassi - Dinan CP - Velocity M rear Toe arms - Advan RZ-DF - LUX H8 - Level 10 AT upgrade
	Appreciate 0 Quote

07-11-2013, 06:50 AM	#9
nvn Second Lieutenant 23 Rep 230 Posts Drives: 2013 335is E93 Join Date: Mar 2013 Location: San Diego, CA iTrader: (3) Garage List 2013 BMW 335is E93 [0.00]	what mods do you have? maybe increase your failsafe to 19.
	Appreciate 0 Quote

07-10-2013, 10:57 PM	#2
fazman Brigadier General 684 Rep 3,696 Posts Drives: 335 e90 Join Date: Feb 2011 Location: Los Angeles iTrader: (0)	You broke it!
	Appreciate 0 Quote