Merlins Ralliart and EvoX TUNING GUIDE Version K.pdf - EvoScan

MERLINS RALLIART & EVOLUTION-X TUNING GUIDE3. Knock at WOT not associated with a gear change.This is generally real knock or detonation and will respond to reducing the ignitiontiming and/or using a fuel with a higher octane rating or AKI.This type of knock we tune out by adjusting the HI-OCTANE SPARK MAP.See DEALING WITH WOT KNOCK.It is best to first check that the knock is directly related to the spark map bylowering the whole spark map above Load 100 by 6° and re logging. If the knockdisappears, or is much reduced, the spark map will require tuning. If the knockremains much as it was, then the problem is not the spark map.Light-tune engines having to run on low octane fuel will benefit from reducing thetiming of the cells where knock occurs until it is eliminated. If you regularly have touse low octane fuel, look into using one of the tephra ROMs with alternatemapping. These can be setup to accommodate switching between good and poorfuel. They can also be used to switch between gasoline fuel and ethanol fuel.4. Knock at WOT that is associated with a gear change.This type of knock can be tricky to eliminate without sacrificing an otherwise goodspark map.See ELIMINATING SHIFT KNOCK.REV: 0.K merlin@three.com.au Page 52 of 134