AMP EFI MS3Pro - EAE Sucked-From-Walls CLT Correction; Tuning EAE

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7.5 Accel Enrich 7 ADDITIONAL ITEMS: BEYOND BASIC FUEL AND IGNITION CONTROL

This curve modiﬁes the EAE Adhere-to-walls curve. It allows the amount of correction speciﬁed by the EAE

Adhere-to-walls curve to be increased or decreased based on coolant temperature. The default curve is ﬂat.

7.5.2.6 EAE Sucked-from-walls CLT correction

This curve modiﬁes the EAE Sucked-from-walls curve. It allows the amount of correction speciﬁed by the EAE

Sucked-from-walls curve to be increased or decreased based on coolant temperature. Increased temperature will

make the fuel evaporate faster.

7.5.2.7 Tuning EAE Since EAE’s main purpose is to ensure that the proper amount of fuel speciﬁed by the VE

table (and other enrichments) actually gets into the engine, it is essential that the VE table as close as possible to

correct before tuning EAE. Since EAE must track the amount of fuel collected on the port walls in order to function,

it is also necessary for EAE to be enabled at all times and the tables to be tuned everywhere, including cells you

rarely hit. This includes the high RPM, low load cells where you typically are running in an overrun fuel cut.

The following procedure should be followed to tune EAE:

1. Tune VE, Warmup enrichments, and all other fuel-related features.

2. Turn off normal Acceleration enrichment by setting the TPSdot and MAPdot thresholds to extremely high

numbers.

3. Make sure that the VE table covers all the way down to Cranking RPM and to extremely low kPa values.

4. Enable EAE in the Acceleration Enrichment dialog box.

5. With the engine at a steady RPM in a high gear, step on the throttle SLOWLY, and note the response feel

and the AFR.

6. At the same RPM, lift off the throttle, and note the response feel and the AFR.

7. Tune the EAE Adhere-to-walls curve and EAE Sucked-from-walls curve until AFR and response are smooth

and stable.

8. Make sure that the throttle movements used are small and slow, allowing the AFR to reach steady-state

before moving the throttle again. Make sure that the whole load range is covered, and that every load seen

during engine operation is covered by each of the curves.

9. Choose a few other RPM ranges, and slowly step on and release the throttle. Tune the EAE Adhere-to-walls

RPM correction and EAE Sucked-from-walls RPM correction curves until the response and AFR are correct

at the RPMs chosen. Typically, you should start at the idle and high cruise RPMs should be chosen. High

cruise RPMs, for example are when speed is maintained but the gear selection is reduced by one or two

gears.

10. Shut off the engine, and allow it to cool completely.

11. Start the engine; as the coolant temperature increases, adjust the EAE Adhere-to-walls CLT correction and

EAE Sucked-from-walls CLT correction curves so that response and AFR are stable.

AMP EFI MS3Pro manual version 1.202, ﬁrmware 1.5.0, 4/21/2017 Page 197