Haltech E8 - Manual (Page 114)

Haltech E11/E8 Instruction Manual
Tuning Tips
• If using a VCT input signal coming through on the home ‘VCT Control Input 1’ is disabled.
• The trace view in the ‘Data Log Page’ is a good tool to use to see the cam position follow the target
position.
• In the area in the map where the load is equivalent to the engine at idle and a few bars above it, set
it across the whole RPM range, to 0 degrees cam angle. Linearise between the edge of this section
and about 20 kPa above it across the RPM range to smooth out the map. (Tip: Linearise each RPM
section individually). This will help improve economy when cruising and also gives a smooth idle.
Anti-Lag Output
Anti lag can be used in two ways Rally Mode and Launch Mode:
The purpose of the Rally Application of anti-lag is to reduce turbo lag by keeping the turbo spinning
during gear changes and off throttle situations. This is achieved by enriching fuel and retarding the timing
under these conditions, to raise exhaust flow to keep the turbo spinning quickly.
To ensure that there is enough exhaust flow during gear changes when the throttle is closed, it is often
required to setup the throttle plate, or idle control valve to flow a lot of air. To maintain a reasonable idle
speed when the throttle/idle valve is setup in this manner, Rotational Idle can be activated. Rotational
Idle keeps the RPM low, even with high airflow, by dropping injection events in a ‘rotation’ between the
cylinders.
Figure 113 - Rally Application of the Anti-Lag System Setup Page
Page: 114 Copyright © Haltech 2008
Warning: Using anti-lag on your engine can cause overheating of engine, exhaust
system and valve train. Additional stresses on engine and driveline can cause
damage and possible failure of gearbox, drive shafts, differentials, clutch and or
crankshaft. Only experienced operators should attempt to use this feature.