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

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MERLINS RALLIART & EVOLUTION-X TUNING GUIDE4.02-FUEL TUNING – STOCK LO-OCTANE FUEL MAPThis is the LO-OCTANE FUEL MAP, which the ECU interpolates with the HI-OCTANEFUEL MAP, depending on knock activity.When the ECU detects detonation, with a KNOCKSUM greater than six, the “octanenumber” that the ECU has stored is reduced. If detonation continues to occur, thenthe ECU will interpolate between the hi-low-octane maps, with a calculation usingthe octane number.The ECU will then continue to operate proportionally between the high and lowoctane maps, until an absence of knock is noted in a boost condition (whenoperating above the OCTANE UPDATE THRESHOLD), at which point the octanenumber is progressively increased and operation rapidly reverts back to the HIOCTANE FUEL MAP.The table scaling normally matches the HI OCTANE map, but does not have to bethe same. The graphing function can be used with the fuel maps, this helps withspotting and smoothing any errant peaks and hollows.REV: 0.K merlin@three.com.au Page 36 of 134
MERLINS RALLIART & EVOLUTION-X TUNING GUIDEThe maps shown below are the stock LO-OCTANE fuel maps for 53610010RALLIART and 53060006 EDM EvoX. They are quite similar and both are soggy rich.If you add warm-up enrichment the ignition system is going to have a hard timepunching a spark through this lot. These could do with some tuning.This is a standard ADM RALLIART with LEAN SPOOL activated.Figure 10:FUEL TUNING - LO-OCTANE FUEL MAPS, RALLIARTThis EVO X has LEANSPOOL de-activated.Figure 11:FUEL TUNING - LO-OCTANE FUEL MAPS, EV0 XREV: 0.K merlin@three.com.au Page 37 of 134
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Merlins Ralliart and EvoX TUNING GUIDE Version K.pdf - EvoScan

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