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JafferStroks JafferStroks is offline
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Default MAJOR MISFIRE with 19Tturbos just installed?? - 08-19-2021, 12:13 AM

Hi guys,

So, my car was running great with the stock turbos and full bolt-ons and made 442HP at the wheels.

The oil level sensor hasn't worked for ages and kicked up a 2E7C BSD communication fault. After some research I found someone point out that this fault was either due to the the alternator, battery harness on top of the battery, water pump, oil level sensor on the sump or the DME. Ive changed everything except the DME and the oil level sensor still doesn't work.omegle xender

A while ago the car wouldn't start and kicked up an A119 Power supply, el steering lock error and wouldn't start. After some dicking around on pro tool I got it to start. and it was fine. This error lead me to believe maybe I need a new CAS.

After this happened I did a bit if research about upgrading to an MSD81 DME and replacing the CAS at the same time. When the engine was out I decided to take out the injectors to get the part numbers off them to send to the coder when I get the MSD81 DME, could I have done something wrong taking the injectors out that are causing the errors and throwing thecar into limp mode?
I decided to get some 19T turbos, whilst I was at it I got a spool performance bucketless lpfp, 3.5 bar map sensor, helix pump, micron filter inlets, outlet, Eldor coil packs H&R antiroll bars, bilstein B16s, m3 from lower arms etc.

So the plan was a month downtime and on the road in a BEAST.

Unfortunately, this was not the case. As soon as I come on boost I get a host of errors ranging from 29DC Cylinder injection cutout, 29CD Combustion misfires, cylinder 1, 29D1 Combustion misfires, cylinder 5, 29CCCombustion misfire, several cylinders??

My tuner is confused and I'm annoyed about spending all this money on my daily driver only to find it painfully useless.

Does anyone have any ideas?

Last edited by JafferStroks; 08-22-2021 at 05:16 AM..
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JuniorB JuniorB is offline
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Car: 2007 e60 5 series
Default 09-10-2021, 09:39 AM

You didn’t have to pull injectors for the info, it’s already on the dme. The dme info just transfers the info onto the msd81. Make sure you got your injectors that you sent with the dme, and not other bad ones. The other issue to look for, is that you need new seals and couplers when you pull them, and make sure they go back into there respected cylinder.
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zach1328 zach1328 is offline
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Car: 535i
Default 09-10-2021, 09:12 PM

Sounds like you found the flaws in changing too many things at once. Really hard to say what's causing the issues.

What's your spark plug setup? Logs? Tuning? Other mods? Actual 19T turbos like RB, Vargas, etc (name brand) or sketchy Ebay 19t's? Lot's of missing info that would be helpful.

Could be old/worn spark plugs causing misfires. Plugs might simply need gapping. If you're not on 1-step or 2-step colder plugs that's a major problem. Maybe an issue with injectors after messing with those.

Not to hate on overdrives, but I don't like those personally. Just not proven enough. Could be killing your HPFP already. Your LPFP might be running out of fueling and crashing the HPFP. Maybe you had a traction control event if that's on (I got 29DC a few times during TC events).

Too much missing info to make a reasonable guess


2007 335i - JB4 + MHD BEF, RB Twos Plus, PI + Stage 3 LPFP, 100% E85, BMS DCI, VRSF **, VRSF 7.5" FMIC, VRSF CP w/ TiAL BOV, MMP inlets, VRSF aluminum outlets, XHP Stage 3, TC Kline SA, M3 F/R control arms
2008 535i
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