2001 ALH (VW 1.9TDi) Tuning using VAGECDSuite?

[320touring]

My £2000 ($300) Octavia comes equipped with the ability to upload revisions to the map in the ECU of the car.

This is the first car I have owned that has had such a function.

Freeware software is available online that allows you to alter the values that map the following criteria:

Driver's Wish (this controls the max fueling at given throttle pedal input %)


Boost Target (Maps the requested boost level from the turbo for a given RPM/Fuel volume)


Smoke Limiter (Controls volume of fuel based on air volume and RPM)


Torque Limiter (Sets fuel volume limits based on RPM)


In essence then, I have the ability to raise /lower fueling levels and boost levels on a fairly granular basis.

The output is available via the "View performance" function:



I'm wondering whether it would be possible to alter the fueling and boost settings to maximise economy?

Initial thoughts would be around improving the torque in the lower revrange and a leaning off of fueling at cruise RPM (circa 2000-2500rpm).

I'd appreciate your thoughts on what (if anything) could be achieved!

Thanks

[deejaaa]

is there a way to lower consumption at cruise speed and increase fuel under load?(IE, cruising at 60, rpm 2200, ascending an overpass/hill, increase rpm)
how are you getting this to the ECU? vag-com cable?

[Vekke]

this vag edc suite works great for edc15+ version cars ecus 1999-2005 diesel cars at least.

You can and you should:
- Optimize egr at the moment I have fully turned it off
- Optimize pedal response the drivers wish make it slower for eco driving
- Optimize boost for each RPM levels (correct AFR for best efficiency)
- Optimize your IQ advance for each RPM levels and each IQ levels
- You can make more power without affecting the engine efficiency
- You can make constant IQ program for testing different aero or mechanical changes.
- Make custom launch control and different kind of rev limiters

- Mechanically tune best engine CAM timing aka torsion value for best efficiency

I have done in my cars propably closer to 5000km pure ECU program road testing trying to find most efficient setups for my diesels. If you have a car that have this ecu and own a flashing cable I am able to offer you a custom program.

My current AFR setup is 14.6% better than stock. I got it 4,2% better by optimizing quicly better boost levels for each RPM points. Propably still little room to improve there, but quite nice boost with little effort.

[bnmorgan]

So, what would it take to go from just a scangage to doing the above to an 04 golf with BEW? and exactly how big an elephant am i asking to eat?

[Vekke]

First learning to use that vag edc suite about one week. Basics you learn in one day.

Then learn how and which direction to change values 1-5 weeks depending what you want to do.

Tests those different setups on road 1-5 weeks
Thats about what I have spent time plus you search all the time new ways to improve your setup.

[Ecky]

Any control of injection timing?

[Vekke]

Full control to whatever IQ timing you want and find to work best.