So I finally got my cobb and made the following changes to the stock map:

Fan temp A at 200
Fan temp B at 210

P0420 CEL hidden

I drove around for a bit to set my fuel trims and today I made the following logs to calibrate my MAF

first 2 are cruises
last one is idle followed by a 1st gear pull

My LTFT is a bit over 6% across the board

so I multiplied my MAF by 1.03 across the board.

I am stock up front, with a midpipe and catback out back

Discuss, gimme suggestions etc?


I fucked up the #1 and #3 datalogs when saving them ....

 

reserved

 

reserved.

 

reserved..

 

Congrats, it's not that difficult to do.

 

Wait, you rescaled your MAF on a stock intake?

 

yeah .... something weird happened tho .... I got a crank position CEL when I flashed to the new map .... I spent half the day trying to figure it out until I flashed back to the last one ... anyone else experience this?

 

yes, if you skew your maf too far you'll get a crank sensor code.

 

3% is too far??? Does it go away after a drive cycle?

 

What the heck is the point of rescaling the MAF on a completely stock intake? If the trims aren't near zero, so what. It's well within the design parameters that Mazda established. Fuel trims change with the weather, that's ok if the underlying calibration is ok and there are no mechanical problems.

 

The idea is to minimize it some so you can run more aggressive in open loop. But the injectors also need to be scaled, so the whole thing can become a chase your tail experience really fast.

 

so is there ANY way to scale it without throwing that CEL?

 

Leave the first two cells alone (the far left), they stay stock, scale the rest and you'll be fine.

 

oh okay ... thanks ... that's idle anyhow I guess

 

Leave the bottom-most MAF scale cell alone (as we discussed in the seminar).
Moving it can cause an ESS cell on some models.

The OE intake can be off by as much as 12%.

Like you have any clue.

 

More than you think, apparently.

So anyway, I popped in to see how the tunaing project was going. Catch anything yet?


.

 

thanks for checking in .... my cobb has an overheating issue and I sent it out for maintenance ... It also will refuse to connect live to ATR ... so I will be back when I receive it

 

Think? You demonstrated this fundamental ignorance. I don't have to think anything about it for it to be apparent.

 

It's apparent that you're doing a pretty good job of this yourself.



.

 

Well, yeah. Gutting other people's ill-founded remarks is my specialty.

 

I could have sworn that gutting yourself was your specialty above all else

 

guys ... both of you have demonstrated and contributed lots of knowledge on this forum ... and I have nothing but respect for both of you ... but seriously, why do you feel the need to **** on each other on my thread

 

Because it's fun.

 

Interesting - never seen that . But mine is an 03 so i gues it doesn't have that issue .

 

The AUDM/JDM 2003 model is the 2004 export model.
There were no significant changes from the start of production until the switchover to the 2005 MY.

Since you have some significant tuning issues with your PCM, it isn't likely that your example would be relevant.