[urq] EFI + MAC-14 maxing ataround 5k RPM
audi at humanspeakers.com
Tue Oct 23 17:36:58 PDT 2007
> The pulse width measurement I gave was with no load.
Oh, wow. Sorry, I misread it as theoretical, not measured. That must
be your trouble then, right? Either "running out" of PW, or really
overfuelling (both as others have mentioned).
>>I’m wondering if the pulse width setting on the injection system is not right and the
>>injectors are simply maxing out at RPM. That seems like another possibility than
>>ignition. I need to check this in my MS settings. I did some math:
>>I have a Max pulsewidth of 11.9 msec that I see in the log.
>>5500 rev/min|min/60sec|sec/1000ms|=.0917rev/ms -> 10.9ms/rev @ 5500 RPM or roughly
>>Roughly @6000RPM is 10ms/rev
>>So if my max pw is 11.9 but if a rev. happens in only 11 ms then the injector pw >
>>so injector is open 100%.
> But isn't the pulse width also load dependent (ie, no load at 5k uses
> less fuel than heavy load at same rpm)? So your observations "at rest"
> revving up don't fit that hypothesis.
> Not to say you aren't right, just fooding for thoughts.
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