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

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MERLINS RALLIART & EVOLUTION-X TUNING GUIDE4.03-FUEL TUNING – STOCK HI OCTANE FUEL MAPTwo maps are shown here, a standard ADM RALLIART with LEAN SPOOL activatedand a stock EDM EVO X with LEAN SPOOL de-activated.Figure 12:FUEL TUNING – HI-OCTANE FUEL MAP, 2009 ADM RALLIARTFigure 13:FUEL TUNING – HI-OCTANE FUEL MAP, EDM EVO XRAINBOW2Figure 14:FUEL TUNING – stock LEAN SPOOL AFR TABLE, ADM RALLIARTREV: 0.K merlin@three.com.au Page 38 of 134
MERLINS RALLIART & EVOLUTION-X TUNING GUIDE4.04-FUEL TUNING – TUNED HI OCTANE FUEL MAPThis GST tuned HI-OCTANE FUEL map has been tuned to give typically 11.8:1 airfuel ratio mixtures, with the stock LEAN SPOOL AFR table settings and LEAN SPOOLenabled.Figure 15:FUEL TUNING – GST tuned HI-OCTANE FUEL MAP, RALLIARTThis GST+Merlin tuned HI-OCTANE FUEL map has also been tuned to give typically11.8:1 air fuel ratio mixtures, with a tuned LEAN SPOOL AFR table and LEAN SPOOLenabled. A lot of tuners will turn off LEAN SPOOL, I prefer to work with the systemand make it work to my advantage. With this tune, the affect of LEANSPOOL isreduced to typically 0.3AFR leaner than the fuel map settings.Figure 16:FUEL TUNING – Merlin tuned HI-OCTANE FUEL MAP, RALLIARTBefore applying a fuel mapping setup like this, I will first verify just how close theoverall fuel system is tracking the base fuel map. This can be done by turning offLEANSPOOL and setting the fuel map above load 100 to 11.5 and measuring theresultant AFRs with a wideband O2 meter. Once you know what AFR the systemhits with 11.5 in the fuel map, adjust the fuel map to get your desired AFR.A good wideband O2 meter is such a useful and affordable tuning tool, they shouldbe considered a must have item for everyone running a non-stock car.REV: 0.K merlin@three.com.au Page 39 of 134
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Merlins Ralliart and EvoX TUNING GUIDE Version K.pdf - EvoScan

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