200% Engine Load and 200 g/s MAF Readings

[TMeschke]

Hello All,

I decided to do some data logging on my 2003 Audi A4 1.8T the other day since I’ve had poor engine performance lately, and I got some rather strange results. The car has a stage 1 tune, among other small mods such as turbo-back exhaust. I did a couple small pulls up to around 6000 rpm, but only about 75% throttle. When I looked through the logs I noticed that there were times where my engine load was supposedly up to 200% and the mass flow rate reached as high as 200 g/m. On idle at operating temps the engine load is about 30%, mass flow of around 4.5-5 g/s, and 18-20 In.Hg vac. I had just replaced my MAF element with a brand new OEM units since I had suspected it could have been an issue. I also know my cam chain tension needs to get replaced again (since I replaced it with a cheap one the first time around...) but I wouldn’t expect that to be causing my issue. So my main question here is what could be the cause of reading a 200% engine load and an abnormally high MAF reading? I’m not sure how engine load is determined, so that would be a good place to start.


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[Gin+]

https://s4wiki.com/wiki/Load

I'd try a different MAF sensor.

[TMeschke]

I just put in a brand new MAF sensor though. I guess I can try putting the old unit back in, and see if it changes anything.


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[TMeschke]

Bump. Just ran some more logs and noticed that the car is running very rich as well. My partial fuel trim adaptation maxes out at -25%. Help.