Do not continue to operate an engine that shows signs of detonation, even if it is brief.ĭo not retard the timing excessively to combat detonation. At this point, increase the VE at that point of the VE table, decrease the timing (in the 12x12 Spark Advance table if you have MS-II™, otherwise by whatever means you have!), or reduce your boost levels. As you continue to increase boost, you will eventually either hear detonation (let off the gas immediately!) or you will have evidence on the plugs that it has occurred. If there are no rattles and no "salt & pepper", increase the boost by a few psi, and repeat. ( Note that those tiny specks of aluminum are bit of your pistons that are being destroyed - so you will want to pay attention to them, and fix it as soon as you can!) Detonation will show as "salt and pepper", tiny flecks of carbon and/or aluminum that indicate detonation has occurred.
Look for evidence of detonation on the porcelain nose of the spark plug that surrounds the center electrode.
Then remove and inspect your spark plugs. Let up on the throttle immediately if you hear the rattles of detonation, or if boost rises higher than you planned.
#Kpa to psi install
Install new spark plugs, then go for a "spirited" drive.
#Kpa to psi full
To start tuning the VE table, warm the engine to full operating temperature first. You can destroy your engine if you do not “sneak up” on the proper VE numbers. Do not rush yourself, and jump ahead of a proper procedure. To tune your VE table, you must proceed with caution in the upper ranges of boost and rpm.
#Kpa to psi software
Read the V5 Software Overview document HERE, or in the EFI software "Help" Contents.īe sure to successfully install the new V5 software, before installing the ECU firmware.Įnsure the Holley EFI software is not open and the ECU is not powered on/connected when installing the new software. The latest Holley EFI V5 software & firmware can be downloaded HERE. The latest software & firmware can be downloaded here:īefore updating firmware, ensure the current Global Folder is saved somewhere, since it will be erased from the ECU. Software: click "Help" tab (top toolbar) & "About Holley EFI".įirmware: click "Sync With ECU" & "Get ECU Info" (Key-on/USB connected). ‒ Tuning information can be read by clicking the F1 key, when you're viewing any screen. This automatically opens the definitions for that specific parameter. ‒ When navigating the software, click "Help ?", drag it to any parameter and click again. ‒ On the top Toolbar, click "Help" & "Contents". EFI Software Help Information/Instructions:.The dome pressure sensor should be a 554-102 pressure transducer, or a 554-108 5 bar MAP sensor (depending on yourīoost psi - LINK).
#Kpa to psi manual
(Holley EFI Wiring Manual - Section 2.1 "Pin-Outs", Pages 6, 7 & 8) However, if using the PWM+ Outputs, they should be wired on the J2B connector. The Dominator ECU can use either type of Output (PWM− or PWM+) for the boost solenoids. The HP ECU should use PWM− type of Output for the boost solenoids ( LINK). The solenoid +/− "Output Type" is selected in the Inputs/Outputs screen of the Boost ICF, then Pin-Mapped. The "Boost −" solenoid is the "Vent" solenoid, and the "Boost +" solenoid is the "Fill" solenoid. The Holley EFI electronic boost controller uses one input & two outputs for the dual boost solenoid control type. (Enter kPa at left, and select psig or psia at right.) Here's an excellent pressure conversion calculator: (Read "Gauge Pressure" toward end of page one.) Every 6.9 kPa over 101, is 1 PSI G of boost:ġ bar MAP = 100 kPa / 00.00 PSI G - 14.70 PSI A (sea level - naturally aspirated)Ģ bar MAP = 200 kPa / 14.31 PSI G - 29.01 PSI A (sea level - forced induction)ģ bar MAP = 300 kPa / 28.81 PSI G - 43.51 PSI A (sea level - forced induction)Ĥ bar MAP = 400 kPa / 43.32 PSI G - 58.02 PSI A (sea level - forced induction)ĥ bar MAP = 500 kPa / 57.82 PSI G - 72.52 PSI A (sea level - forced induction)Ħ bar MAP = 600 kPa / 72.33 PSI G - 87.02 PSI A (sea level - forced induction)ħ bar MAP = 700 kPa / 86.83 PSI G - 101.5 PSI A (sea level - forced induction)įYI: The Holley EFI software MAP kPa load scale (Y axis) will display:ġ bar-105 kPa, 2 bar-210 kPa, 3 bar-315 kPa, 3.5 bar-350 kPa, 4 bar-420 kPa, 5 bar-520 kPaĭon't confuse PSI G (boost gauge) & PSI A (absolute with atmosphere):
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