Quote:
Originally Posted by cslntuee
How to do the "rescale"?
I cannot find the post.
Thanks.
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Quote:
Originally Posted by nikitopo
I don't think you need any MAF rescaling. The ECU when it is in closed-loop mode, it takes additional measurements from the O2 sensor and adjusts the AFRs. These measurements are much more exact than the MAF measurements. This is because ECU expects to be able to deal with overly dirty fuel filters and reduced fuel flow issues. Then it also uses these corrections in the MAF readings in open-loop mode. In a sense, the ECU will somehow re-calibrate the MAF readings itself. It might not be perfect, but it will do the job. I would expect issues in the AFR, only if the MAF sensor needs a big re-calibration.
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TRD intake unlikely to need maf scaling it was designed to work with stock tune/maf scaling.
Have a look at your LTFT Long term fuel trims if they are over about 7% then maybe worth maf scaling.
If you on OFT Stage 1 tune then Commanded AFR and AFR (measured by 02 sensor) should follow each other fairly closely under load, on overun injectors turn off .
If both of those ok then maf scaling is ok .
like this
http://datazap.me/u/steve99/e85-maf-...zoom=5580-7148
have a read of maf scaling links below.
http://www.ft86club.com/forums/showthread.php?t=64790