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Dumb Question Thread!


Jambun

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It shouldnt ever fill it

Healthy engine will put out a bit of vapour mist but nothing more

If being tracked and / or a built motor with big clearances when cold, then it might breathe a bit more, but a street car motor shouldnt come close

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 QRAF said:

ok so yes it\'ll over flow just thought I\'d get these 550cc ones for $100 and just safe guard my car from running out of gas. I just assumed what wasn\'t used would just be sent back to the tank

The extra fuel won\'t go back to the tank. It\'ll all go into the cylinders. All 25% extra of it. Mine spat awesome flames on overrun when I did it :)

(I.e. don\'t do it......)

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 Koom']

[quote name='QRAF said:

ok so yes it\'ll over flow just thought I\'d get these 550cc ones for $100 and just safe guard my car from running out of gas. I just assumed what wasn\'t used would just be sent back to the tank

/quote]

The extra fuel won\'t go back to the tank. It\'ll all go into the cylinders. All 25% extra of it. Mine spat awesome flames on overrun when I did it :)

(I.e. don\'t do it......)

Im thinking ECU to injector pulse width is based on original injector sizing - will o2 sensor feedback loop correct this at all? (Rich signal sent to ECU to lean off by reducing injector pulse width?) im guessing open loop fuelling will be screwed as explained :)

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It will attempt to but as above don\'t even bother

Some cars can do it (adjust over time via closed loop) - but not soobydoos, it might get close eventually but will end up not "safer" as such, just running a bit weird and slower before

Best analogy would be if you had a 1l bottle of water, which you used to measure out 1l of water every hour. If someone went and replaced it with a 1.1l bottle and you had no real way to monitor it, you\'d just be wasting water and not picking it up for quite a while, and then you\'d end up not being accurate anyway

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