Advanced Tuning Section:

*****IMPORTANT NOTICE*****
Do this ONLY if you know exactly what you are doing..and that you are familiar with your AVC-R

NE Points:

Definition/Usage: NE Points (a.k.a. RPM points) are used by the AVC-R to control boost at specific RPM's.

Recommended NE Points: (Assuming you're on stock twins using Sequential setup)

(4000 is not needed...for it is the transition period for 1st->2nd turbo where the boost drops)

*Feedback Speed Setting:

Definition/Usage: The numbers used in F/B Speed pretty much acts like a "delay time" in which boost is controlled. So the higher the speed is set to, the longer it would take for the AVC-R Solenoid to act and control boost. As with the lower the speed, the faster the Solenoid would act to regulate sudden boost overshoots. If your unit's having a hard time surpressing overshoots, try lowering the speed setting in increments of 1.

For BPU-level Supras I'd recommend setting it at:
3 2 2 2 2
If overshooting still occurs, then try:
2 1 1 1 1

Once lowered, the AVC-R solenoid will respond more quickly to avoid boost overshoots.

*Start Duty:

Definition/Usage: The Start Duty is pretty much increasing/decreasing your set Duty Cycle (in 1% increments) for any particular gear. Let's say your Boost is 1.2kg/cm², and Duty Cycle is at 70%. Boost seems to hold without a problem in 1st gear... 2nd gear... but when you shift into 3rd gear...your boost shot up to 1.27kg/cm...you would then go into the St Duty menu ..and under 3rd gear...lower the Duty for 3rd Gear... (ie -4%)

Now this is what your AVC-R's Duty Cycle would look like when your at 70% Duty:

Keep lowering the St. Duty in 1% increments for that gear until you get it right.

If you hit target boost correctly on each gear, then the St. Duty for that gear should be kept at +/- 0.

***NOTE***

In order for the F/B Speed and St. Duty to work, you must have your Gears properly learned, using the Gear Judge Feature.

How to Use Gear Judge? Read on!

Gear Judge:

Definition/Usage: The AVC-R pretty much learns your gears by taking the RPM in the gear you're at...and dividing it by the speed your car's currently at, (in km/hr) and thus makes a ratio # that will be applied in "judging" exactly what gear you're at.

Formula: RPM/Speed

Under "Etc/Gear Judge", Press NEXT >

You will see Gear Judge menu, Gears 1-5 displayed.

On the right side...you should see the Ratio # (255 when car is at a stop)

Now drive your car into 1st gear at a moderate speed...around 30mph will do. (The ratio is kept at a constant...so it doesn't matter how fast you go..as long as you're in the proper gear) Now highlight the ratio # box in 1st Gear...and press NEXT>

Your car has now learned your 1st gear (Around 90 for AUTO's) ...now shift to 2nd..and do the same for the rest. This will now enable features such as St. Duty, F/B Speed, etc. :)

Questions? Comments? -> E-Mail Me