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

MERLINS RALLIART & EVOLUTION-X TUNING GUIDESECTION 11 – MISCELANEOUS ECU FUNCTIONS11.01-SPEED LIMITThe Japanese domestic market cars are factory speed limited to 184kph, with alarge speed difference to when normal operation is resumed. This is a dumb idea,as you could be unable to negotiate a corner while the engine is off without thedrive traction while the vehicle is slowing down. Re-set as required.Figure 66:LIMITS – SPEED LIMIT, EVO XThe ON value is the speed at which limiting is triggered.The OFF value is the speed at which normal ECU operation is resumed.11.02-REV LIMITSThe REV LIMIT is a hard fuel-cut. Leave it alone unless the motor is specially builtwith forged rods and pistons etc. Remember maximum torque is around 4000rpmwith standard cams, so that’s where you want up-shifts to land for max acceleration.The SATIONARY REV LIMIT is a function available on EVO 8 and EVO 9, but not onthe JDM GSR EVO 7. It may be available on some EVO 7 RS ROMs. It is only activewhen the clutch is depressed, so the ECU is looking at the clutch switch input totrigger the stationary limit.Figure 67:LIMITS – REV LIMITs, EVO XREV: 0.K merlin@three.com.au Page 98 of 134