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

MERLINS RALLIART & EVOLUTION-X TUNING GUIDE13.05-VIRTUAL DYNO – CORRECTIONS & OPTIONSNow the Tire Ht. and Occ.Weight corrections need to be included – you didremember to note the tire size and quiz the car owner on his weight and any heavyitems in the car, like subs and amps etc etc.Add the correct weight (in lbs) and watch the power jump up. If you need toconvert from kilos to pounds, multiply the kilograms by 2.2 for a weight in pounds.The tire height calculator works fine if the car has non-standard wheel height. Clickthe blue tab and the TireSizeCalculator will appear. Use the pull-down table toenter the correct dimensionsAnother nice feature is the ability to add environmental corrections with the SAEtab. With SAE ticked, the barometric pressure and ambient air temperaturecorrections can be entered. Imperial only though here.The cars gear ratios, final drive ratio, co-efficient of drag (CD) and vehicle weightare all stored in the cars.xml file that comes with the Virtual Dyno package. Thesecan be edited if any errors are found and new vehicles can be added by tuners ifthey need to. Gear and differential ratios and weights can be found on the web formost cars, you might have to take a guess on the CD but the result will still bequite good.REV: 0.K merlin@three.com.au Page 113 of 134