just like the new cars .no matter what fuel you put in the tank E85 or 87 pump gas it knows what to do with it without getting a laptop to adjust the map.
I think we are talking time vs degree of fire. You fire late, no time to burn all the fuel if rich is the mix. Make sense theory wise?
That statement right there says all the stupid that anybody needs to know of your understanding of fueling!!!!
You go find me 1 pro street bike running open loop factory ecu's and Winning!!!!!
Closed loop 02:
It is my understanding that the 02 is heated (4-5 wire) or is slow to heat up and then sends a signal (1 wire) and has a limited voltage range of between 0.1v to 0.9v or less than a volt. There is a DTT system that occurs as the 02 reaches a 2/3rd magnetic flipflop is the fucking drop, hello? Are we on the same page yet? Fuck that closed and open explanation. It's a fucking timer and clicks off like a fucking clock 60hz... the fuck! So there is no closing/opening shit going on. It's numbers vs. heat sensors for fueling. The colder the number, the richer the charge. Then shit heats up as the input heats to a normal condition, i.e., the radi temp sensor levels out and didn't the ECU keep clicking off a 14.7 steady as she goes? Read your AFR meter morning start anshit. You find me a pro street bike fucking with a stock ECU, and one wire is touched, I'll show you limp... unless you can change the ign curve.
So there is no turning off of some some open to closed looping. I write the numbers on the map, the AFR is spitting out that number. That's open loop. If I want my 02 set to a richer target, then I change my map to this target. If I can program a 14.7, then the map and the math says I can DTT to 13a and change. Unless the 02 is a self DTTing tool, or said another way, if your same (.01 - .9v range of) 02 input is being used, then it is going to fuck things up.
That says I remove a sensor, 'limp' occurs. If I use a wide band 02, a black box that sets the AFR, are we more or less back to a pc? And the wide band is just a delayed x-ray machine showing the spent lung. Romes wins the argument. The bike's ECU uses binary speak. The holley uses binary, pc, any black box. You're not seeing it, bad. The bike is set two ways only.
02: Full or limp.
APS: Full or limp.
PC: Open loop...APS still connected.
02 connected if factory ECU: No can tune.
02 Limp: Now can tune... w/holley ign maps... Can no longer change fueling reaching different altitudes... missing sensor being out of the loop. Therefore, you run rich as the air expands or is less compressed as would be at sea level.
Since some 02 WAS in the loop, are we on the same page yet?
Proceed with the pc tune, Rooksteer. Say the AFR on the chart is above the 13a range of the pc's straight [ideal target] line. That's lean; if the line is above the 13a line. So you could find the X to Y at that area, richen the cells by dragging the mouse over a few blocks and click to richen. It's been awhile, but are we correct we tackle it this way?
Tormenting the motorcycling community one post at a time