So I've been doing some poking around because I've noticed that my car runs like crap in the cold weather.. AFR's go very lean as load rises...

So I've decided to start from scratch and see what I can do to make sure ME is really getting the info it needs (just like Snow Trooper was mentioning in his thread about tuning ME7).

During some searching on chiptuners.org I stumbled across this again (I say again because I've read that thread before and didn't think much about his comment until now.



Any input? 

I've been looking over and over @ the FR and keep thinking it could be done with MLOFS but doesn't make much sense to subtract a fixed value would it?

The problem isn't one of sign.

The problems is that MLOFS is additive, not multiplicative.

Also:

Worrying whether your scaling is off by 1% or 15% is pointless if your intake is so non-stock that the MAF readings err by +/-30% across its operating range...

In practice, the *absolute* fixed scaling error isn't that important.. its the variation that kills you.

Your MAF can be miscaled by 30%, but as long as it is of 30% CONSISTENTLY you can get the car to drive just fine.

Also, don't bother trying to get anything from Dera. He'll just play mysterious games with you. His posts are cryptic and oftentimes deliberately misleading.

req or actual AFR?