[rhinomesk]

Hey I just installed my jb4 and it worked for that night we installed it running up to 6 lbs overboost on map 2, the next morning I woke up and the car is in limp mode and only getting 2 lbs of boost to the manifold, we are thinking it's a chargepipe failure since it's stock (already ordered a replacement) but was wondering if anyone had any input if it's anything else
Codes
121532: boost pressure plausibility pressure upstream from throttle at motor stand
121530: Pressure upstream from throttle too high
121201 TMAP Signal Active with engine off

Any help would be appreciated! (I would post a picture of my jb4 harness and wires but I can't post pictures yet it seems)

[este]

Originally Posted by rhinomesk

Hey I just installed my jb4 and it worked for that night we installed it running up to 6 lbs overboost on map 2, the next morning I woke up and the car is in limp mode and only getting 2 lbs of boost to the manifold, we are thinking it's a chargepipe failure since it's stock (already ordered a replacement) but was wondering if anyone had any input if it's anything else
Codes
121532: boost pressure plausibility pressure upstream from throttle at motor stand
121530: Pressure upstream from throttle too high
121201 TMAP Signal Active with engine off

Any help would be appreciated! (I would post a picture of my jb4 harness and wires but I can't post pictures yet it seems)

Try visually checking charge pipe most of the time it pops off at the top.

[rhinomesk]

Originally Posted by este

Try visually checking charge pipe most of the time it pops off at the top.

Where would I be looking exactly, we inspected the bottom part of the charge pipe when replacing my downpipe, looked fine .but not sure about the top of it

[este]

Check out this install thread for pics, check right where cp connects to manifold.

https://www.e90post.com/forums/showthread.php?t=1026194

[rhinomesk]

update: got an email back from BMS, they sent me the wrong jb4 :/ little annoying for my first experience with them, took off the wiring harness and the car is running perfect, i can feel the boost back, obviously getting a CEL from the de catted DP but should be getting the correct jb4 very soon

[mike@x-ph.com]

Originally Posted by rhinomesk

update: got an email back from BMS, they sent me the wrong jb4 :/ little annoying for my first experience with them, took off the wiring harness and the car is running perfect, i can feel the boost back, obviously getting a CEL from the de catted DP but should be getting the correct jb4 very soon

Glad to know they figured out whats going on. If you have not upgraded your charge pipe, i strongly recommend you do so.