6.3 Tuning fuel 6 TUNING THE MS3PRO
Underneath the curves, you have a line graph that appears when the engine is running. It tracks the air/fuel
ratio, MAPdot, and TPSdot measurements to help you tune the acceleration enrichment.
Besides the curves, you have the following settings.
• Accel enrichment TPS <-> MAPdot blend %: This percentage determines what percentage of the accel-
eration enrichment comes from the TPS and what percentage comes from the MAP sensor. 100% is entirely
TPS driven, and 0% is entirely MAP driven. In between, the percentage will scale the MAP driven pulse width
adder down and the TPS driven pulse width adder up.
• Accel MAPdot threshold: The minimum MAPDot level needed to trigger MAP driven acceleration enrich-
ment. Increasing this number will decrease false triggering from a noisy MAP signal, but too much will mean
you miss triggering acceleration enrichment at lower amounts of tip in.
• Accel TPSdot threshold: The minimum TPS rate of change needed to trigger TPS driven acceleration
enrichment. As with MAPdot threshold, this has similar trade-offs between setting it too sensitive and not
sensitive enough.
• Cold Accel multiplier %: This is applied whenever warmup enrichment is active. The MS3Pro applies
the full amount of multiplier when coolant temperature is at -40 degrees. It tapers off in a linear fashion to
zero when you reach the point on the warmup enrichment curve where WUE equals 100% and there is no
enrichment.
• Accel Enrich Down-Scaling with RPM: The acceleration enrichment will begin tapering off in a linear
fashion once you reach the “Full Accel Below” RPM, and stop entirely once the RPM exceeds the “Zero
Accel Above” RPM.
6.3.5.3 Time Based AE This is tuned under the Time Based Accel menu.
AMP EFI MS3Pro manual version 1.202, firmware 1.5.0, 4/21/2017 Page 115
To Next Page
Loading...