Newbie Knock Question
Jun 9, 2011, 01:19 AM
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Newbie Knock Question
Hi all any help would be appreciated.
Just a few questions,
what is the acceptable knock count using evoscan v2.7.0090??
At what knock count will the ecu switch to the low octane maps???
Thanks
Bob
Just a few questions,
what is the acceptable knock count using evoscan v2.7.0090??
At what knock count will the ecu switch to the low octane maps???
Thanks
Bob
Jun 9, 2011, 05:59 AM
#2
As the ECU detects knock the octane flag gradually lowers. The octane flag starts at 100, at which point the car is running 100% on the high octane map. Above a certain knock threshold (7 if I'm not mistaken), the ECU gradually starts lowering the octane flag. When the value drops to say 80, the ECU will interpolate 80% from the high octane map and 20% from the low octane map.
For a finished tune I'd say up to 2-3 counts on occasion isn't too bad, but obviously the less knock the better.
For a finished tune I'd say up to 2-3 counts on occasion isn't too bad, but obviously the less knock the better.
Jun 10, 2011, 01:32 AM
#4
Evolved Member
See here for Merlin's brilliant tuning guide...
https://www.evolutionm.net/forums/ec...ing-guide.html
And if you haven't already waded through it, see here...
https://www.evolutionm.net/forums/ec...ead-links.html
...and the many other helpful stickies around the place!
Rich
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