[iqraceworks]

Those injectors look horrible....definitely running rich. And when they are out, and you are cranking the engine over...they aren't spraying fluid, or dripping?

[kevlarblue]

Originally Posted by swellengear

Your AFRs for both banks look good, and are matching. So that doesn't tell us much. There are some timing corrections on cylinder 1, which MIGHT point towards a leaky injector. I would drive the car for a little bit(no need to drive it hard), park it up, and pull the plugs after the car has been sitting for a good few hours. Give them a smell as well, and also inspect them visually.

Here is a great guide for interpreting your data logs:
https://bmwtuning.co/bmw-n54-data-logging-with-jb4/

That was a great read and hugely helpful. I did not have 6 cylinder timing enabled on my previous log so I fixed that and did another one:

https://datazap.me/u/kevlarblue/log-...25-26-27-28-29

Ign_1 seems to be an outlier in a few places, specifically staying at 7.1 when 2-6 go to 0.0 as I let off the throttle to shift from 3 to 4 at timestamp 79.11. This seems to be a consistent trend each time the RPM starts to decrease; Ign_1 drops but doesn't go to zero like 2-6. And then at timestamp 107.9, as the throttle goes back to 100, Ign_1 is climbing slower than the rest and momentarily dips down to 6.3 while 2-6 are at 13.8.

Maybe I'm not reading it right and I am very new to looking at a log but I'm thinking I might swap out that injector and do another log to see what happens.

[kevlarblue]

Originally Posted by iqraceworks

Those injectors look horrible....definitely running rich. And when they are out, and you are cranking the engine over...they aren't spraying fluid, or dripping?

Thanks for bringing that up, I had black buildup on cylinders 2-6 but not on cylinder 1. That was my first time pulling injectors so I did not know what to expect.

That's right, I cranked on the engine 3 times for about 20 seconds each over the course of a couple hours and I never got any spray or drip from any of them. I had the fuel rail hooked up but the electrical plugs disconnected from the injectors.