AMP EFI MS3Pro - Accelerator Pump AE; Main Accel Enrich Settings Menu

6.3 Tuning fuel 6 TUNING THE MS3PRO
throttle in 1/2 second. The MAPdot is measured in kPa per second. MS3Pro can use either one, or a combination
of the two, to trigger acceleration enrichment.
6.3.5.1 Main accel enrich settings menu This menu allows for several changes that affect both AE modes.
• Use Time-based or Accel-pump Accel: This lets you select which of the two methods below will be used.
• Wall-wetting AE (EAE, X-Tau): Enables model based acceleration enrichment, discussed in section 7.
• TPSdot uses %WOT: This allows you to specify a curve that defines the upper limit of throttle position as
a function of RPM. Moving the throttle beyond this point does not allow in any additional air, and therefor
triggers no additional acceleration enrichment.
• X-Tau MAPdot Thresholds: The X-Tau acceleration enrichment, when enabled, will always trigger when the
MAP readings increase. However, you can prevent this from automatically triggering when the MAP sensor
decreases by specifying a minimum amount of MAPdot in kPa per second to trigger X-Tau.
– Start Transition - A MAP decrease at a rate slower than this will not trigger X-Tau fuel cuts.
– Finish Transition - When the MAP sensor reading drops faster than this, full X-Tau driven fuel cuts are
in effect. Between the start and finish values, the MS3Pro will ramp in this feature.
6.3.5.2 Accelerator pump AE The accelerator pump AE uses one curve each for MAPdot and TPSdot driven
acceleration enrichment. The enrichment starts as soon as the MAP or TPS reading changes, and stops when
the reading stops changing. The % number is a multiplier which multiplies by Required Fuel to scale the pulse
width up (or down; you can set negative multipliers when the MAP decreases or the throttle closes and pull fuel
at this point) for acceleration enrichment. The curve lets you add a greater amount of pulse width at faster throttle
openings or MAP rises. Zero on the curve means no enrichment is added at that point.
AMP EFI MS3Pro manual version 1.202, firmware 1.5.0, 4/21/2017 Page 114