New Software/Firmware 4.6.7

[rayhall]

Now available is new software and firmware. This is a list of the changes http://www.vi-pec.com/page_files/FirmwareChanges.html

This is another big update. Many of the changes are to the software to make it much faster and more stable. The software now connects and then ramps up the speed to 250,000 baud in most cases.

The data logger has had big changes. It is very powerful now and if you are familiar with the Motec logging software you will see many similarities.

The big firmware change is Rev Limiter and Antilag. Below is a description of how it now works. The antilag has two setups that you can switch between. Boost control is still open loop, but more control tables have been added.

Rev limiter has been changed so the values you put in the limit table are the actual rpm the limiter will hold the engine. The old version added the Limit Control Range to the values in the table. Now the Limit Control Range come into play before the limit rpm. What his means is the engine will start to cut before you get to the limit. You need to adjust the limit table values higher then the clean rpm you will use. The revlimit is for bad engine over rev and should never be set near the gear change rpm you will use.

Another change to the limiters is the option to select Advanced mode on or off. With it set to off the most of the settings are hidden and default settings used, that give good control.

Ray.

******************************************* New Antilag *************************************

Antilag:

Antilag is the retarding of ignition on gear changes while there is a big throttle opening. There are two antilag methods.

1. Fixed throttle opening. Used on GroupN cars.

2. Solinoid kicker or air bypass valve. Used on GroupA or PRC cars.

Both these methods can have antilag armed or disarmed with an external switch.

Antilag is always used with cyclic idle or cooldown.

1. Cyclic idle is random cutting of the injectors to maintain a normal idle speed with a fixed throttle opening.

2. Cooldown is used to control idle speed while the turbocharger cools down by random cutting of the injectors. This is used with a kicker solenoid or air bypass valve.

Fixed Throttle Setup:

The cyclic idle is selected and must be set to always.

Antilag can be set to Always or the a Digital switch for arming.

How it works....

When the engine is idling the cyclic idle controls the engine speed.

If you have selected a digital input to arm the antilag, the antilag will operate on gear changes after you exceed the Antilag Enable RPM. When the engine comes back to idle the cyclic idle control operates. If you turn the switch off the cyclic idle operates, but the antilag will not operate on gear changes.

Throttle Kicker or Air Bypass:

How it works...

Digital input is selected as Antilag Arming System in the anitlag setup.

Kicker solenoid wired to an Aux output that is selected a Antilag Solenoid.

Set the cyclic idle to cool down.

Set the cool down time to the value you require to cool the turbocharger.

You drive the car to the start of the rally stage with the antillag arming switch off. When you are about to start, turn in the switch. Nothing

noticeable will happen. Launch the car from the start line the kicker solenoid will turn on. Every gear change the antilag will operate. When you get to the end of the stage and the rpm drops back to idle the cooldown idle will work for the period you set. After this, the cyclic idle turns off and so does the kicker solenoid. The car now runs normal.

[Guest |722|]

Ray,

Is there a way to use the anti-lag enable switch to directly drive the stock Idle Air Solenoid to achieve the same effect as a throttle kicker or other external bypass?

Or do most IAS/ISC not flow enough air to handle the flow required for proper anti-lag setups?

Just curious as I'll be hooking this up on a rally car and am trying to simplify things as much as possible.

[rayhall]

There are options in the antilag setup to use the idle valve for the extra air source.

Select ISC override = On, and set amount of override you want.

Ray.

[Guest |526|]

Tried the update and can't use the anti-lag/cyclical idle anymore because I was using the A/C idle up tables to open up the throttle and I don't see a way to make this work. Anti-lag trigger and ac request is on same DI. This is on a DBW Subaru.