• Mazda 6 MPS • UK member

[manselainen]

In fuel log actual AFR a bit leaner than desired AFR. Some work in MAF cal needed? Otherwise nice logs!

[laxplayermjd]

looks pretty good to me, id say if anything a couple very minor tweaks to your load target correction table. Couple times your load jumps up and down like its over correcting the wastegate duty cycle

[Steve @ VersaTune]

Looks good! Just a few small suggestions.

MAF looks a little lean from ~3.25v on up.

Drop BCS DC Base at 2250 to 25% and at 2500 to 22% to reduce the spike on spoolup.

Maybe tweak the Requested Load Multiplier tables to help with the spikes on shifts.

If you continue to see that knock at 5500, try dropping 1* of timing at 5500.

You can probably bump OL WOT AFRs to .780 once you are sure the MAF is spot on.

[skiptownmcat]

Sorry for the thread hi-jack but I failed my MOT test again, would I be in right in thinking that a vac leak could cause high co levels? Any suspect places for vac leaks?

[Steve @ VersaTune]

vac leak would cause lean operation. It could be a dieing O2 sensor.

[skiptownmcat]

Fuck it, I was moaning to the wife about it so she's bought me a full 3" tbe using a eurospec 200cell cat as an early xmas present, it's being fitted on Friday. If it still doesn't pass, I'll have to get the O2 sensor.

[Steve @ VersaTune]

Mine was replaced under warranty at 48000 miles. They tend to crap up from smokey K04s and soot from the factory rich AFRs.

[kevstewart]

Calibrating my maf but temp has dropped to 1 degree Celsius, will I still be fine? Suppose I could just keep an eye on it and adjust when temp rises again.... Possibly after winter!? Cold weather and snow forecast for the end of the week....

[skiptownmcat]

Airflow should not be affected by weather (I think!!), get the cal spot on.

[kevstewart]

my maf calibration is almost there, once going my LTFT settles to -0.8 but when idle or very slow it is about -3.1

as long as my LTFT is around -1 to 1 should i be happy with that?

any suggestions looking at my log?