[jonho90]

I recently installed the JB4 tune on my 335i.

My engine light came on when I was going at about 6000rpm+ and it automatically turned off within the next 5-8seconds? This happened twice and I'm not sure what's going on.

I also installed an oil catch can, and to prevent the tube getting squeezed to hard when I put the engine body shell back on top of the N54 engine, I did not tighten upper nuts (closer to the windshield). I did tighten the two nuts down below though. Could this be the problem?

I recently replaced my spark plugs about 2000km ago, so I doubt it could be a misfire? but when I was going at 6000rpm+ @ 130km/h, it did vibrate quite a bit.

[straightcashhomie]

Sounds like it could be a dme failure ..

[jonho90]

Originally Posted by straightcashhomie

Sounds like it could be a dme failure ..

how would i verify that this is the case and how do i rectify the problem? replacing the DME is gonna be costly right

[straightcashhomie]

plug in the usb and read codes, it could be anything spark plugs injectors ignition coils. it all depends, the codes will help distinguish the problem

[jonho90]

Originally Posted by straightcashhomie

plug in the usb and read codes, it could be anything spark plugs injectors ignition coils. it all depends, the codes will help distinguish the problem

my boost guage is not moving either, could it be the turbos...some kinda failure?

[jonho90]

OK, I literally had to connect my laptop and speed so that the engine light came back on and I could quicky click read code.

It shows this:
30FF Boost under target - poossible boost leak

What should i do next? Take it to mechanic? I recently installed the JB4, Injen DCI, Stett CP + Tial BOV, BSH OCC

[straightcashhomie]

Originally Posted by jonho90

OK, I literally had to connect my laptop and speed so that the engine light came back on and I could quicky click read code.

It shows this:
30FF Boost under target - poossible boost leak

What should i do next? Take it to mechanic? I recently installed the JB4, Injen DCI, Stett CP + Tial BOV, BSH OCC

I would check all of my installs to make sure everything is in tightly, if you still cannot find the issue I would bring it to an Indy shop. Boost leak could just be a user install of something, good thing we didn't see DME or misfires lol.

[amill411]

Sounds like you may have installed JB4 wrong.

Did you double check everything?

[jonho90]

Originally Posted by amill411

Sounds like you may have installed JB4 wrong.

Did you double check everything?

i think it's probably either the charge pipe or DCI.

the JB4 controls works fine on my dash control so I doubt so? I don't get what you mean by installing it wrong. I wouldn't be able to read the codes if I did haha

[alexman360z]

did you ever figure out what happened to your car?