JB3 G4 Update

Mike@N54Tuning.com · 11-01-2010, 01:09 PM

I've been asked by many members about what the new G4 means and how they can get it, and what modifications need to be done. I finally have some answers for you guys.

When you get the G4 upgrade you'll get the new control box, a new power wire, and some zip-ties. Basically you'll be inserting the new power wire in the DB25 connector and relocating three wire pairs to new positions. What used to be IAT, RPM, and 5v are relocated to CAN+, CAN-, and chassis ground.

Here is a schematic of what you need to do. We will also probably be offering a service where you send your harness in for the upgrade for a few bux but nothing is set or confirmed in that department.

Mike

kjrulz · 11-01-2010, 01:40 PM

good luck...

themyst · 11-01-2010, 01:45 PM

Wow, I did a JB3 pinout myself, but this looks tough. Expect the harness modification service to really take off Mike.

lawwailok · 11-01-2010, 01:47 PM

i hope there's gonna be a DIY video to help. im sure i will mess it up big time or breaking something

lyndon_h · 11-01-2010, 01:48 PM

not a good idea at all...

Mike@N54Tuning.com · 11-01-2010, 01:58 PM

Quote:

Originally Posted by themyst

Wow, I did a JB3 pinout myself, but this looks tough. Expect the harness modification service to really take off Mike.

The upgrade is about as easy as installing a downpipe fix in the JB3 PnP harness. Definitely 100 times easier than installing a pin out harness.

*It's pretty hard to mess it up.

Mike

Dom the Bomb · 11-01-2010, 02:17 PM

i rather just send it in and not worry about messing it up.

Alan l. · 11-01-2010, 02:50 PM

itsbrokeagain · 11-01-2010, 03:09 PM

looks easy enough to me.

Forcefed3 · 11-01-2010, 03:30 PM

I could defiantly do that, but I hate messing with wires. Hopefully this will be inexpensive.

AlpineG05 · 11-01-2010, 04:02 PM

I don't understand how this install worries anyone. It looks simple to me.

lyndon_h · 11-01-2010, 04:16 PM

I issued my earlier response because this is could be a customer support and customer confidence nightmare without better directions. Plus, you could be asking for trouble when you have customers cut and or splice wires. There is a reason why pnp sales are higher despite the price difference. I could do it without a hitch, but at least 30% of the people will have problems. And what is the penalty of doing it improperly? What happens if the splice is comes unattached because the user didn't secure the splice properly?

fisherbln · 11-01-2010, 04:25 PM

So does this make the harness identical to the Procede harness other than the end connector (DB25)? It sure looks like it. If it is, it would be tempting to create an adapter for the end piece to make a quick plug to switch between the two tunes without any harness changing.

Bagelfast · 11-01-2010, 04:28 PM

Looks pretty straight forward. A video with this will help the rest out.. Looks like G4 is getting closer!

scottp999 · 11-01-2010, 07:04 PM

Interesting that tapping power in that manner was "bad", and the method in the JB3 harness was marketed as superior for it's simplicity about 20 months ago.

Mike's own question was: Can it get any better? I guess he answered it with this thread, going with the other method is better?

Thread titled: JB3 Wiring Harness -- Perfection in Simplicity

Quote:

Originally Posted by Mike@N54Tuning.com

Finally notice there are no external power or ground taps. The JB3 is designed to power fully through the harness. Really, can it get any better?

Then you have the competitor telling BMS there was a good reason for external power and ground tap about 30 months ago:

"There's a reason that we don't use one of the small thin gauge wires in the subconnector for power and ground source. A reason that Terry will figure out for himself."

http://www.e90post.com/forums/showthread.php?t=150173

I will leave now and stay far away.

cn555ic · 11-01-2010, 07:12 PM

I am good with wiring, but even for a season pro like myself, I would be hesitant to do this...I would rather send it in and have it done the right way...I

stimpy · 11-01-2010, 07:17 PM

How about doing a core exchange?

I was one of the first JB3 buyers (PnP) and had to upgrade my box when going to 2.0 so I still have the old old harness.

I'd prefer to purchase the new harness/upgrade/whatever I need and then send my stuff back. Once received, you guys refund my 'core charge'.

cn555ic · 11-01-2010, 07:20 PM

Quote:

Originally Posted by stimpy

How about doing a core exchange?

I was one of the first JB3 buyers (PnP) and had to upgrade my box when going to 2.0 so I still have the old old harness.

I'd prefer to purchase the new harness/upgrade/whatever I need and then send my stuff back. Once received, you guys refund my 'core charge'.

I am sure they will offer a harnass update fee of somekind to help people not too comfortable with this update.

Jeff@TopGearSolutions · 11-01-2010, 07:24 PM

LOL... I foresee many more threads on my car wont start.

Clap135 · 11-01-2010, 07:27 PM

Quote:

Originally Posted by JPSlick

LOL... I foresee many more threads on my car wont start.

lmao

themyst · 11-01-2010, 07:32 PM

Like many others stated Mike, this DIY is a piece of cake for me. My reply was more directed towards the average Joe customer who will NOT be comfortable taking on such a task.

Heck, a ton of customers have issue installing the PnP as it is, imagine asking them to do the DIY.

cn555ic · 11-01-2010, 07:33 PM

They will charge a fee I bet for sure...

11-01-2010, 01:09 PM	#1
Mike@N54Tuning.com Joint Chiefs of Staff 4918 Rep 115,980 Posts Drives: 2007 335i, 2015 M3 Join Date: Dec 2008 Location: N54tuning.com iTrader: (89)	JB3 G4 Update - DIY Harness! I've been asked by many members about what the new G4 means and how they can get it, and what modifications need to be done. I finally have some answers for you guys. When you get the G4 upgrade you'll get the new control box, a new power wire, and some zip-ties. Basically you'll be inserting the new power wire in the DB25 connector and relocating three wire pairs to new positions. What used to be IAT, RPM, and 5v are relocated to CAN+, CAN-, and chassis ground. Here is a schematic of what you need to do. We will also probably be offering a service where you send your harness in for the upgrade for a few bux but nothing is set or confirmed in that department. Mike Attached Images Last edited by Mike@N54Tuning.com; 02-10-2011 at 09:45 PM..
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11-01-2010, 01:40 PM	#2
kjrulz Mastermind 71 Rep 1,360 Posts Drives: girls krazy Join Date: Jan 2009 Location: your mother iTrader: (5)	good luck...
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11-01-2010, 01:45 PM	#3
themyst Major General 177 Rep 6,631 Posts Drives: '16 MK7 GTI Join Date: Feb 2009 Location: NYC iTrader: (8)	Wow, I did a JB3 pinout myself, but this looks tough. Expect the harness modification service to really take off Mike. __________________ E90 LCI N54 6AT
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11-01-2010, 01:47 PM	#4
lawwailok Lieutenant Colonel 146 Rep 1,922 Posts Drives: E90 335i, E70 X5 Join Date: Aug 2009 Location: Sacramento, CA iTrader: (18) Garage List 2007 E90 335i [8.00] 2009 E70 xDrive30i [0.00]	i hope there's gonna be a DIY video to help. im sure i will mess it up big time or breaking something __________________ -eric E90 335i TiAg STOCK see my garage for mod list.. E70 X5 SGM try to stay stock :/
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11-01-2010, 01:48 PM	#5
lyndon_h Lieutenant Colonel 40 Rep 1,917 Posts Drives: e90 Join Date: Jan 2007 Location: Madagascar iTrader: (2)	not a good idea at all...
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11-01-2010, 02:17 PM	#7
Dom the Bomb Lieutenant 18 Rep 465 Posts Drives: 2007 335i Join Date: Mar 2010 Location: Corpus Christi, Texas iTrader: (18)	i rather just send it in and not worry about messing it up. __________________ UR Catted Dp's - BMS DCI - JB3 2.0 - Helix FMIC - Vent Boost Gauge - CF Grill-DO Meth Kit 2-Carbon8 Power Dome Hood-Amuse Front Bumper-M3 Side Skirts-LC818 Smoke Chrome Wheels On The Way Last edited by Dom the Bomb; 11-01-2010 at 02:55 PM..
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11-01-2010, 02:50 PM	#8
Alan l. Major General 5450 Rep 8,815 Posts Drives: 2020 F95 X5M Competition Join Date: Jun 2009 Location: United States iTrader: (9)	__________________
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11-01-2010, 03:09 PM	#9
itsbrokeagain 310 Rep 15,745 Posts Drives: 1999 528iT, E53 X5, E46 325xi Join Date: Mar 2007 Location: Strong Island iTrader: (7)	looks easy enough to me.
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11-01-2010, 03:30 PM	#10
Forcefed3 Banned 127 Rep 4,732 Posts Drives: 2008 335i Join Date: May 2010 Location: South iTrader: (2) Garage List 2008 335i [1.00]	I could defiantly do that, but I hate messing with wires. Hopefully this will be inexpensive.
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11-01-2010, 04:02 PM	#11
AlpineG05 hi 129 Rep 1,140 Posts Drives: Alpine White G05 Join Date: Feb 2008 Location: Bakersfield, Cali iTrader: (1)	I don't understand how this install worries anyone. It looks simple to me. __________________ 2022 M Sport G05 Jb4, CTS catless dp, M performance exhaust, bms intake, IND goodies, Maxton kit
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11-01-2010, 04:16 PM	#12
lyndon_h Lieutenant Colonel 40 Rep 1,917 Posts Drives: e90 Join Date: Jan 2007 Location: Madagascar iTrader: (2)	I issued my earlier response because this is could be a customer support and customer confidence nightmare without better directions. Plus, you could be asking for trouble when you have customers cut and or splice wires. There is a reason why pnp sales are higher despite the price difference. I could do it without a hitch, but at least 30% of the people will have problems. And what is the penalty of doing it improperly? What happens if the splice is comes unattached because the user didn't secure the splice properly?
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11-01-2010, 04:25 PM	#13
fisherbln Captain 12 Rep 859 Posts Drives: 2007 335i Coupe Join Date: Sep 2009 Location: USA iTrader: (2)	So does this make the harness identical to the Procede harness other than the end connector (DB25)? It sure looks like it. If it is, it would be tempting to create an adapter for the end piece to make a quick plug to switch between the two tunes without any harness changing. __________________ 2007 335i SG Coupe 2009 128i AW
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11-01-2010, 04:28 PM	#14
Bagelfast Lieutenant Colonel 125 Rep 1,546 Posts Drives: BMW Join Date: Sep 2008 Location: USA iTrader: (0)	Looks pretty straight forward. A video with this will help the rest out.. Looks like G4 is getting closer!
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11-01-2010, 07:12 PM	#16
cn555ic 441 Rep 18,331 Posts Drives: 335i Join Date: Jun 2007 Location: US iTrader: (6)	I am good with wiring, but even for a season pro like myself, I would be hesitant to do this...I would rather send it in and have it done the right way...I
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11-01-2010, 07:17 PM	#17
stimpy Colonel 167 Rep 2,210 Posts Drives: E92 335i Join Date: Feb 2008 Location: Phoenix AZ iTrader: (7)	How about doing a core exchange? I was one of the first JB3 buyers (PnP) and had to upgrade my box when going to 2.0 so I still have the old old harness. I'd prefer to purchase the new harness/upgrade/whatever I need and then send my stuff back. Once received, you guys refund my 'core charge'.
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11-01-2010, 07:24 PM	#19
Jeff@TopGearSolutions 3441 Rep 79,211 Posts Drives: C6 Z06, 09 335i, 10 335xi Join Date: Dec 2008 Location: www.TopGearSolutions.com iTrader: (37)	LOL... I foresee many more threads on my car wont start.
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11-01-2010, 07:32 PM	#21
themyst Major General 177 Rep 6,631 Posts Drives: '16 MK7 GTI Join Date: Feb 2009 Location: NYC iTrader: (8)	Like many others stated Mike, this DIY is a piece of cake for me. My reply was more directed towards the average Joe customer who will NOT be comfortable taking on such a task. Heck, a ton of customers have issue installing the PnP as it is, imagine asking them to do the DIY. __________________ E90 LCI N54 6AT
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11-01-2010, 07:33 PM	#22
cn555ic 441 Rep 18,331 Posts Drives: 335i Join Date: Jun 2007 Location: US iTrader: (6)	They will charge a fee I bet for sure...
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