Hello Everyone ! my car is now mostly stock. I have reverted back (from turbo) to my almost stock setup besides genie 4-2-1 headers, intake and injectors which are 230 cc. Question is dose the 94 + mx's, ECM have an adaptive A/F ''learning mode'' to compensate for running slightly rich ?? and how long dose it take for it to adapt if it dose ? The engine run's very smoothly but I would like to increase my fuel milage just a bit. I belive thease injectors are 10-20cc's higher than stock. I would like to keep thease injectors in, as they are new, also pulls stronger at higher RPM's.
Thanks for the help !
Adaptive air/fuel metering ???
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Adaptive air/fuel metering ???
Apexi Safc 2 ,Timex Boost-Temp-Oil Gauges, Stage 1 Performance clutch, 8.5 mm Magnacore plug Wires,2.5 inch exhaust, Cold Air Intake , Short Shifter , High temp rotors & Ceramic pads to slow it all down !
- mr1in6billion
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Any info/link on details to how the ecu functions in conjuction with various sensors, MAF, o2, tps, cam angle, would be very helpful as I have done many searches but havnt found much. Thanks !
Apexi Safc 2 ,Timex Boost-Temp-Oil Gauges, Stage 1 Performance clutch, 8.5 mm Magnacore plug Wires,2.5 inch exhaust, Cold Air Intake , Short Shifter , High temp rotors & Ceramic pads to slow it all down !
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Re: Adaptive air/fuel metering ???
Nobody but the mazda engineers know for sure how it works - others have tried to approximate the behavior though. Look into the megasquirt info pages especially the maps - they tell you how the fuel is controlled - in megasquirt you can also set how much power/control o2 feedback has on the fuel control. You can set it to almost nil - so you can tune it with an o2 sensor and run daily without one....
There are some clues about the programming in the manual - not much though...
http://www.mx-3.com/manuals/showimg.php ... F1-014.gif" onclick="window.open(this.href);return false;
http://www.mx-3.com/manuals/showimg.php ... F1-125.gif" onclick="window.open(this.href);return false;
http://www.mx-3.com/manuals/showimg.php ... F1-137.gif" onclick="window.open(this.href);return false;
http://www.mx-3.com/manuals/showimg.php ... F1-143.gif" onclick="window.open(this.href);return false;
There are some clues about the programming in the manual - not much though...
http://www.mx-3.com/manuals/showimg.php ... F1-014.gif" onclick="window.open(this.href);return false;
http://www.mx-3.com/manuals/showimg.php ... F1-125.gif" onclick="window.open(this.href);return false;
http://www.mx-3.com/manuals/showimg.php ... F1-137.gif" onclick="window.open(this.href);return false;
http://www.mx-3.com/manuals/showimg.php ... F1-143.gif" onclick="window.open(this.href);return false;
![Image](http://img517.imageshack.us/img517/5927/fliegetn0ss7.gif)
- RS_OBD'oh_2
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Re: Adaptive air/fuel metering ???
I don't belive that obd1 does fuel trims.
Re: Adaptive air/fuel metering ???
its adaptive to a point. the only thing i can think of is adjusting the vaf (unless you have a maf) and possibly lowering your fuel pressure a little bit (since it used to be turbo im guessing you have an adjustable rrfpr)