Could a freer flowing exhaust cause the engine to run a little leaner...

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03-20-2002, 09:34 PM

#11

Taner Halicioglu

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Actually 'WOT' is completely different between the 551A and the other (551H/M/etc) ECUs...

I woulnd't doubt there are some big differences relating to fuel trim as well...

I only have info on the 551A, which has a <b>LOT</b> less WOT monitoring than the other ECUs...

Eric - which ECU was this guy talking about, do you know?

-T

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03-20-2002, 09:41 PM

#12

DrSmile

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Easy answer as to what's the case... log the O2 sensors...

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03-20-2002, 10:43 PM

#13

DrSmile

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If the mix stays stoichiometric it shouldn't read rich at wot.

If it does it isn't stoichiometric by definition. You don't agree?

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