[vr4spd]

I know there are a ton of these threads but I searched and didn't find anything exactly like Im experiencing. Anyways I ordered the Pinout jb4 g5 ISO from a forum member here.

Attempted to install. Connected to DME double checked connections, attempted to start vehicle, car would just turn over.

Went back disconnected reconnected everything, same bs.
Car is my DD so I disconnected everything and tried to return to stock. its now 8pm dark. Pissed off trying to get my hvac stuff installed. Fire up car it finally starts. Now its stuck in limp mode. Any Ideas would greatly be appreciated. Closet BMW dealer is 140 miles away and I have a doctors appt at 3 today. Service engine light soon as well as engine malfunctions reduced power. feels like there is no boost.

[RaceTruk]

Originally Posted by vr4spd

I know there are a ton of these threads but I searched and didn't find anything exactly like Im experiencing. Anyways I ordered the Pinout jb4 g5 ISO from a forum member here.

Attempted to install. Connected to DME double checked connections, attempted to start vehicle, car would just turn over.

Went back disconnected reconnected everything, same bs.
Car is my DD so I disconnected everything and tried to return to stock. its now 8pm dark. Pissed off trying to get my hvac stuff installed. Fire up car it finally starts. Now its stuck in limp mode. Any Ideas would greatly be appreciated. Closet BMW dealer is 140 miles away and I have a doctors appt at 3 today. Service engine light soon as well as engine malfunctions reduced power. feels like there is no boost.

make sure you did not put the smaller subconnectors in the wrong spot.
all 3 smaller ones can get swapped if you force them too hard.
that is why it is recommended to do each subconnector 1 by 1.
first time i installed the smaller one from the right side of the car into the left.
deal will NOT be able to figure it out very easily.
only reason i figured it out was i saw a photo that showed which colors go where

[vr4spd]

yeah I actually noticed that when I went to put it back together I was forcing them in. I went and reviewed the pdf and figured it out. Good suggestion though. Id like to add, it did start once with the box connected but every fault light came on and the steering wheel had no connection with the JB. So something is messed up.

[RaceTruk]

Originally Posted by vr4spd

yeah I actually noticed that when I went to put it back together I was forcing them in. I went and reviewed the pdf and figured it out. Good suggestion though. Id like to add, it did start once with the box connected but every fault light came on and the steering wheel had no connection with the JB. So something is messed up.

fyi if you have XI you will get a few errors upon start up the first time (bc of battery disconnect).
if it started up then not too much can be swapped incorrectly.
sorry to hear

[e90Mark]

My problem recently was not shoving the power pin up far enough.

[vr4spd]

It def would seem like the JB4 wasn't connected some how. Anyway forget to mention is N54 e92 08.

UPDATE
\just got back from auto zone and had codes scanned
u0100
u0001
u110f
u112b
u111a
u1101
P0118
P0193
P0238

[glachhman]

I did a homemade g5 harness pinout and it worked fine, not sure where you went wrong there.

[vr4spd]

Yeah Im not either because I was very meticulous, although could be the box was junk. Not going to write that off. Either was can is returned to stock and still having trouble

[vr4spd]

So I just went through and checked all the connection s on the dme. Looks like there is no wire In the large black subconnector... Supposed to be a yellow boost wire however there are three wires that are solid yellow in the black sub any ideas?

[Mike@N54Tuning.com]

There is a reason they discontinued the professional pin out harness. It was meant for experienced shops only.

You probably placed a wire in the wrong spot or mixed up a connector. Best bet is to find someone else with a stock car to compare with or photos of stock wiring to compare with.

Mike

[vr4spd]

Yeah exactly. I ordered the Pnp harness from you guys and the hvac filters with overnight shipping however I'm Omw where I live unless some one will be so kind as to send me a pic of thier large black sub connector or a link to a diagram

[vr4spd]

Nvm fixed it through trial and error still a cel code but no more reduced power bs. MIke is there anyway to verify the box is good once I get the Pnp harness?

[Mike@N54Tuning.com]

Originally Posted by vr4spd

Nvm fixed it through trial and error still a cel code but no more reduced power bs. MIke is there anyway to verify the box is good once I get the Pnp harness?

It should be fine. Once its all installed just clear codes via JB4 and see if anything else comes up.

Mike

[RLNY]

I want to upgrade my jb4 g4 pinout to g5. Can I just by the g5 box and swap it it with the g4 box. I tried to search but cannot find an answer anywhere. I'm ready to order it to just want to know if I can do that or not

[djkevinnn]

Originally Posted by RLNY

I want to upgrade my jb4 g4 pinout to g5. Can I just by the g5 box and swap it it with the g4 box. I tried to search but cannot find an answer anywhere. I'm ready to order it to just want to know if I can do that or not

Hey man, I think that pin out was G5 iso ready

[mikex25]

You can order the box from their website for 150 bucks. Regarding your pinout harness, you might be able to send it to them and see if they can upgrade it for you.

Originally Posted by RLNY

I want to upgrade my jb4 g4 pinout to g5. Can I just by the g5 box and swap it it with the g4 box. I tried to search but cannot find an answer anywhere. I'm ready to order it to just want to know if I can do that or not