Why am I so lean when the engine is cold
#1
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Chaps,
Log and MSQ attached.
Every morning, whenever i pull away when the engine is cold I go MEGAlean.
see 82794 in the log.
MSQ seems to be doing everything it should- adding more fuel etc..
I've got my warmup settings very high as a result to try to 'compensate'. you can see it's adding 160% more fuel and still hitting AFR of 19.4 under load!
Thoughts?
Log and MSQ attached.
Every morning, whenever i pull away when the engine is cold I go MEGAlean.
see 82794 in the log.
MSQ seems to be doing everything it should- adding more fuel etc..
I've got my warmup settings very high as a result to try to 'compensate'. you can see it's adding 160% more fuel and still hitting AFR of 19.4 under load!
Thoughts?
#3
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Cheers- I know it's obvious and logical what I should do.
But, I know of noone else going that high - seems a bit mental... we're talking potentially 80% extra fuel! Causes problems when theres such a huge drop when the car hits 71 deg c (the WUE upper limit in tunerstudio) as i can't taper the warmup any further.
I'll increase it . I don't want to wash the bores too much, as cruise it's often dropping to 12:1.
It's only lean under cold accel. cold accel is already at 170% and tbh doesn't seem to kick in. Map dot threshold is as low as it can go (30kpa/s) without causing a hunting idle.
But, I know of noone else going that high - seems a bit mental... we're talking potentially 80% extra fuel! Causes problems when theres such a huge drop when the car hits 71 deg c (the WUE upper limit in tunerstudio) as i can't taper the warmup any further.
I'll increase it . I don't want to wash the bores too much, as cruise it's often dropping to 12:1.
It's only lean under cold accel. cold accel is already at 170% and tbh doesn't seem to kick in. Map dot threshold is as low as it can go (30kpa/s) without causing a hunting idle.
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