Let's see your fully tuned timing maps
Apr 15, 2012, 12:50 PM
#1533
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all my logs are on my other computer ill try and dig something up, but it was taking more timing with no knock at that point. not quite sure how a cat would lean me out...although i could see it raising backpressure/egt's...
Apr 15, 2012, 12:52 PM
#1534
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the idc's are fine, but i will definitely not push them higher. ecu flash is off by a minimum of like 5%.
all my logs are on my other computer ill try and dig something up, but it was taking more timing with no knock at that point. not quite sure how a cat would lean me out...although i could see it raising backpressure/egt's...
all my logs are on my other computer ill try and dig something up, but it was taking more timing with no knock at that point. not quite sure how a cat would lean me out...although i could see it raising backpressure/egt's...
It's so smooth.
Apr 15, 2012, 05:41 PM
#1540
You're probably leaner than you think. Putting an exhaust or test pipe will make you run leaner. This is a log of mine with a similar knock pattern:
You can see the combination of aggressive timing and lean-ish condition can give you knock. Not sure what gas you're using too.
You can see the combination of aggressive timing and lean-ish condition can give you knock. Not sure what gas you're using too.
Apr 15, 2012, 06:09 PM
#1541
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You're probably leaner than you think. Putting an exhaust or test pipe will make you run leaner. This is a log of mine with a similar knock pattern:
You can see the combination of aggressive timing and lean-ish condition can give you knock. Not sure what gas you're using too.
You can see the combination of aggressive timing and lean-ish condition can give you knock. Not sure what gas you're using too.
its 93 octane, and the timing is not very aggressive. afr's were tuned to about 11.5 if i recall.
Apr 15, 2012, 06:25 PM
#1542
im sorry, but i still dont see how putting a cat on the car will effect mixture, i may be wrong, so if someone could explain the theory...because its totally not making sense in my head.
its 93 octane, and the timing is not very aggressive. afr's were tuned to about 11.5 if i recall.
its 93 octane, and the timing is not very aggressive. afr's were tuned to about 11.5 if i recall.
Apr 15, 2012, 06:58 PM
#1544
Regardless of the cause your knock seems to need a rework of the tune. So might as well just do it. Or wait to put on your wideband and do it.
Apr 15, 2012, 07:07 PM
#1545
In regards to the low octane maps I can agree with killerpenguin that its a nice safety feature but only against bad gas. As for when your tuning I set them to the same as my high octane maps to keep it consistent. When the tune is finished I adjust the low octane maps to add back in the safety feature. I only run a few degrees of timing difference.