sean's cheap thrills, 90 1.6 with subaru td04
05-11-2016, 11:00 AM
#1323
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Not according to james.
Megasquirt Support Forum (MSEXTRA) ? Could maxed out injectors cause this? (View topic)
Megasquirt Support Forum (MSEXTRA) ? Could maxed out injectors cause this? (View topic)
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05-11-2016, 11:16 AM
#1325
Not according to james.
Megasquirt Support Forum (MSEXTRA) ? Could maxed out injectors cause this? (View topic)
Megasquirt Support Forum (MSEXTRA) ? Could maxed out injectors cause this? (View topic)
IN REAL LIFE BRO.
you want to see that screen shot again? I kept adding until it couldn't. they were well past 100 and still adding more fuel
many other ecu's do the same thing. I think its like a safety/cushion zone. so I don't see the need to cap it for no reason
But please, tell me more about how injectors work. I no haz idear breh
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05-11-2016, 11:20 AM
#1326
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Its simple. 100% means that the injector is open all the time. Any more doesn't open it more.
Go open your faucet 100%. Then open it another 20%. Did you get more water?
James is the one that wrote the code. Which controls the injector.
Go open your faucet 100%. Then open it another 20%. Did you get more water?
James is the one that wrote the code. Which controls the injector.
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05-11-2016, 11:23 AM
#1327
you're talking theory, I'm talking reality.
What happens when TS is telling you its at 100 but you increase ve cells and it keeps adding fuel?
either you weren't at 100, or your injector settings are off. except it does this on multiple injectors, using "known" settings that everyone uses.
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05-11-2016, 11:29 AM
#1333
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Duty cycle is calculated from PW. The megasquirt calculates that you need more PW than can fit in a cycle. So your injector is open 100% of the time from 100% up to 255% (the max that the megasquirt can return, because calc_duty returns an unsigned char, which has a max of 255)
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05-11-2016, 11:30 AM
#1334
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I'm not talking theory. I'm talking reality. As in what the actual code inside the microcontroller does.
This isn't some silly theory, this is what happens in the code.
This isn't some silly theory, this is what happens in the code.
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05-11-2016, 11:33 AM
#1335
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Here is a good one from Matt Cramer
Your injector goes static at 100%. It probably just delivers enough fuel to keep it running at an acceptable AFR range when going full throttle.
Originally Posted by Matt Cramer
If 1 squirt simultaneous works, it works, no reason to change it.
It appears your injectors are sized in such a way that they deliver just enough fuel to the engine at full throttle when they go static, and the VE table is actually higher than it needs to be. I'd advise larger injectors or a bump in fuel pressure to give you some reserve capacity.
It appears your injectors are sized in such a way that they deliver just enough fuel to the engine at full throttle when they go static, and the VE table is actually higher than it needs to be. I'd advise larger injectors or a bump in fuel pressure to give you some reserve capacity.
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05-11-2016, 11:33 AM
#1336
so the question then is, if 100% really equals 100%, why then can I actually increase and decrease fueling past the reported 100%
do you seriously not understand what I'm saying?
I would agree except I was able to accurately control fuel, not just have it peg at an acceptable afr.
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05-11-2016, 11:36 AM
#1338
dude........seriously
I'll replicate this on the next one I do if I don't forget.
if it's static then you shouldn't be able to increase fuel. its stuck open, it will deliver what it will deliver. you have no control of fueling at that point.
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