Originally posted by SleeperZ:
The ECU will learn around the S-AFC and any other "signal changing" electronics.




That's not entirely true. This stuff has been discussed ad nauseum in the 3L and forced induction forums. Most of the time these discussions are there because bigger mods require more fixes.

Anyway, the settings made at full throttle are not tuned out because there is no O2 sensor input at that time.

The settings made at part throttle and cruise do have O2 sensor input and they will be adjusted a bit.
But they DON'T tune out the adjustments from the SAFC.
The pcm will just tune the car back to a basic stoichiometric condition. IF you did something drastic like add bigger injectors, the pcm is only going to trim back so far. If you alter the airflow signal to a percentage scaled off the original, then it is a lot closer and the pcm will use the O2 signal to "fine tune" the air fuel.

Again, there is no full throttle adjustment of the SAFC.
There part throttle adjustments are just to fine tune the A/F which you would want the pcm to do anyway since for efficiency.


Now, back to the cut up maf. I don't have a problem cutting out a maf to do an experiment, but you didn't do any qualitative analysis other than say 'my butt dyno is better' and 'so is my friends'

That would still be excusable if you weren't on a forum that has had everyone, INCLUDING me, cut mafs a long time ago to see what would happen and found out that it sucks and is dangerous.
I at least used an eManage to tune in the cut maf and I didn't cut the whole sampling tube out.
If you had searched, you wouldn't be out the extra $20 right now. If you were more unlucky, you might be spending a thousand dollars replacing internal engine parts when the car went lean under full throttle.

Then to post it almost like you thought it was the greatest thing since sliced bread....I thought that was crap.
I don't think you are crap, nor the act of experimenting and learning. Just that this is already well covered and you don't need to try and reinvent the fricking wheel. Learn from other peoples mistakes and go on and make some NEW mistakes. THAT is why we have innovations and new technology....people BUILD on the knowledge that other people already put their effort into.

Sorry about the soap box speach, but after your soap box speach, I felt I had to set the record straight so you don't go off playing the Martyr like everyone is out to get you, instead of taking the constructive criticism for what it's worth.

warmonger

Former owner of '99 CSVT - Silver #222/2760 356/334 wHP/TQ at 10psi on pump gas! See My Mods '05 Volvo S40 Turbo 5 AWD with 6spd, Passion Red '06 Mazda5 Touring, 5spd,MTX, Black