[Kelvin1000]

Originally Posted by Quisp

Wouldnt that be a facePAW?

I had misfires and got all 6 injectors replaced but it did not solve the problem. I have been having the failing fuel pump symptoms for a long time but they went to injectors first. Didnt change the plugs when they did them and I think that could be a small part of the problem now.

Are you getting misfires in all cylinders or just some? Do you have downpipes? I am thinking maybe an o2 sensor gone bad???

[got_psi]

Kelvin, shoot me a PM.... I can help you.

[Kelvin1000]

PM sent.

Thanks a lot!!!

[RBBMWE46M3]

Originally Posted by Kelvin1000

So I was having some misfire problems in cylinder #3 but only during cold starts. The problem would manifest itself a lot on the Procede V3 REV2 and also on the JB3 1.4 but to a lesser extent. Once the car was hot, I never had any misfire issues at idle and the car never had a problem with misfires at WOT.

The dealer had changed my Fuel Pump a few weeks back and I replaced all my spark plugs and the coil plug in #3 to try to fix the problem myself. I took it in and they said they could not duplicate the problem (even though it had stored a few SES Cylinder #3 misfire codes).

I insisted that they keep the car and try the coldstart for a couple of days and the shop foreman actually got involved to fix the problem. And what was their final answer... They actually told me that the GOLF TEE mod was causing the inconsistent back pressure in the exhaust as the flap would not close during idle when the engine was cold. They say that this was the cause of the misfires at startup which would go away once the engine warmed up.

Can this explanation actually hold any truth to it??? I left the car without any tunes and removed the GOLF TEE mod (zip-tie mod for me) and started it up this morning without any codes but I need to do a few days of testing to see if the misfires come back.

If they don't I will put back the tunes and test some more but I can't believe the stupid GOLF TEE mod would actually have anything to do with the misfires.

Any thoughts???

And we wonder why BMW came out with v29.2...I take it that your dealer knows all about your mods....I think if my dealer knew I tried to add windshield washer fluid they would void my warranty

[Kelvin1000]

They haven't said anything to me and I haven't said anything to them...

[Quisp]

I am stock except for Dinan Stage 2.
At the time they said there was only a problem with 2 or 3 of the injectors but they replaced all of them at once. Not the plugs or anything else. They did forget to recalibrate the ecu so the first time i turned the car off and back on when i got it home I got alimp mode and had to tak eit back for the recalibration