2C58 2C86 after Pure Stage 2 install. need 3.5 bar TMAP help

JLGM4 · 01-19-2017, 09:35 PM

Pure stage 2 install done with fuel pump. Got the 3.5 bar TMAP and the adapter but the adapter does not fit the JB4 connection whatsoever. Also what is weird, is that my new 3.5 bar fits the JB4 connection perfectly, which it shouldn't because that is what the adapter is for. Here's a picture of JB4 connection and adapter that will not connect to each other.

Throwing codes 2C58 2C86 and really just want to get this all sorted as I've been without a car for 3 weeks now waiting for this install.

Can anyone tell me why this TMAP connection is not working or if I'm doing something wrong because I'm hoping the codes are related to the TMAP chargepipe connection.

Turbod · 01-19-2017, 09:58 PM

Quote:

Originally Posted by jgottsman11

Pure stage 2 install done with fuel pump. Got the 3.5 bar TMAP and the adapter but the adapter does not fit the JB4 connection whatsoever. Also what is weird, is that my new 3.5 bar fits the JB4 connection perfectly, which it shouldn't because that is what the adapter is for. Here's a picture of JB4 connection and adapter that will not connect to each other.

Throwing codes 2C58 2C86 and really just want to get this all sorted as I've been without a car for 3 weeks now waiting for this install.

Can anyone tell me why this TMAP connection is not working or if I'm doing something wrong because I'm hoping the codes are related to the TMAP chargepipe connection.

The adapter isn't needed for all cars.

Mike@N54Tuning.com · 01-19-2017, 09:59 PM

The adapter is for typeA harnesses. If you are typeB then no adapter is needed. You do need to enter the JB4 setting for a 3.5bar sensor though.

Mike

Rob_BMW_PNW · 01-19-2017, 10:00 PM

You only need the adapter if you have a 'Harness A' JB4, if your JB4 is 'Harness B' it will plug right in without one.

JLGM4 · 01-19-2017, 10:14 PM

Quote:

Originally Posted by Mike@N54Tuning.com

The adapter is for typeA harnesses. If you are typeB then no adapter is needed. You do need to enter the JB4 setting for a 3.5bar sensor though.

Mike

Got it. That helps. I left the shop with the JB4 plugged into the new 3.5 bar TMAP and was still getting codes so I guess the problem is elsewhere. Could I possibly have to download the BEF to accomodate the new turbo? I've already adjusted JB4 settings for new TMAP.

weehe126 · 01-20-2017, 08:10 AM

What JB4 firmware are you on? 2C58 is for boost pressure deactivated. Could be caused by the wastegate controller not being plugged in, or from the 2C58 code. Which is TMAP reading below barometric pressure. Could possibly have a bad sensor. I would install the stock sensor to check.

JLGM4 · 01-20-2017, 08:12 AM

Quote:

Originally Posted by weehe126

What JB4 firmware are you on? 2C58 is for boost pressure deactivated. Could be caused by the wastegate controller not being plugged in, or from the 2C58 code. Which is TMAP reading below barometric pressure. Could possibly have a bad sensor. I would install the stock sensor to check.

Firmware is old i just realized. Need to cut my diode and update this morning and see if that fixes

weehe126 · 01-20-2017, 08:53 AM

Quote:

Originally Posted by jgottsman11

Firmware is old i just realized. Need to cut my diode and update this morning and see if that fixes

That would do it.

hz_diesel · 05-01-2017, 09:10 AM

was this solved? I am having a similar issue, my jb4 is up to date and the diode is cut

bbnks2 · 05-01-2017, 09:29 AM

Quote:

Originally Posted by hz_diesel

was this solved? I am having a similar issue, my jb4 is up to date and the diode is cut

No idea what JB4 does, but I found that even though my N20 TMAP plugged right in to my stock harness, the pins were reversed. N20 TMAP did not work with MHD until I re-pinned the stock connector:

This may not be necessary with jb4 though?

Here is the thread I wrote on it:
http://www.e90post.com/forums/showthread.php?t=1368216

hz_diesel · 05-01-2017, 10:16 AM

Quote:

Originally Posted by bbnks2

No idea what JB4 does, but I found that even though my N20 TMAP plugged right in to my stock harness, the pins were reversed. N20 TMAP did not work with MHD until I re-pinned the stock connector:

This may not be necessary with jb4 though?

Here is the thread I wrote on it:
http://www.e90post.com/forums/showthread.php?t=1368216

Hey, appreciate the response. I believe you scenario is for harness A, I don't think harness B fits reversed but I could be wrong. Harness A requires an adapter where Harness B does not.

bbnks2 · 05-01-2017, 10:41 AM

Quote:

Originally Posted by hz_diesel

Hey, appreciate the response. I believe you scenario is for harness A, I don't think harness B fits reversed but I could be wrong. Harness A requires an adapter where Harness B does not.

I am indeed harness type A.

If your plugs fit together fine without the adapter then aren't you harness type A? you said it fit without the harness?

hz_diesel · 05-01-2017, 10:45 AM

Quote:

Originally Posted by bbnks2

I am indeed harness type A.

If your plugs fit together fine without the adapter then aren't you harness type A? you said it fit without the harness?

I am not the OP. I just joined this convo today, I said I have a similar issue as in I am also getting the 2C58 code but I am 100% harness B

01-19-2017, 09:35 PM	#1
JLGM4 First Lieutenant 57 Rep 399 Posts Drives: 2016 M4 Join Date: Jan 2014 Location: San Antonio TX iTrader: (0)	2C58 2C86 after Pure Stage 2 install. need 3.5 bar TMAP help Pure stage 2 install done with fuel pump. Got the 3.5 bar TMAP and the adapter but the adapter does not fit the JB4 connection whatsoever. Also what is weird, is that my new 3.5 bar fits the JB4 connection perfectly, which it shouldn't because that is what the adapter is for. Here's a picture of JB4 connection and adapter that will not connect to each other. Throwing codes 2C58 2C86 and really just want to get this all sorted as I've been without a car for 3 weeks now waiting for this install. Can anyone tell me why this TMAP connection is not working or if I'm doing something wrong because I'm hoping the codes are related to the TMAP chargepipe connection.
	Appreciate 0 Tweet Quote

01-19-2017, 09:59 PM	#3
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)	The adapter is for typeA harnesses. If you are typeB then no adapter is needed. You do need to enter the JB4 setting for a 3.5bar sensor though. Mike
	Appreciate 0 Quote

01-19-2017, 10:00 PM	#4
Rob_BMW_PNW Captain 127 Rep 609 Posts Drives: 135i 2011 Join Date: Jan 2016 Location: PNW iTrader: (3)	You only need the adapter if you have a 'Harness A' JB4, if your JB4 is 'Harness B' it will plug right in without one. __________________ 2011 135i N55 Pure Stage 2 Turbo, Stage 2 LPFP, N54tuning.com Catless DP, Cobb Drop in, AEM Meth Kit, MHD, BMS OCC, Tuned by WedgePerformance PI, LSD, and Dif lockdown coming soon
	Appreciate 0 Quote

01-20-2017, 08:10 AM	#6
weehe126 Brigadier General 1161 Rep 3,189 Posts Drives: 2017 340i Join Date: Apr 2014 Location: San Antonio iTrader: (2)	What JB4 firmware are you on? 2C58 is for boost pressure deactivated. Could be caused by the wastegate controller not being plugged in, or from the 2C58 code. Which is TMAP reading below barometric pressure. Could possibly have a bad sensor. I would install the stock sensor to check.
	Appreciate 0 Quote

05-01-2017, 09:10 AM	#9
hz_diesel Lieutenant Colonel 192 Rep 1,703 Posts Drives: 2012 E92 335ix Join Date: Jun 2015 Location: New England iTrader: (7)	was this solved? I am having a similar issue, my jb4 is up to date and the diode is cut
	Appreciate 0 Quote