Eurodyne Tuning Software

Hey guys,

So a little about my Audi A3, specs are below.

- JE FSR Pistons w/Tuff Skirt & Thermal Barrier Coatings

- IE Rods w/Rifle Drilling galleries

- ARP Head Studs

- ARP Main Studs

- All Calico Coated Bearings

- GTX2871R Turbo & Manifold

- Tarmac Engineering Intercooler

- VWR Intake

- Forge Motorsports Oil Catch Can

- AEM Water/Meth Injection

- Milltek Turbo Back Resonated Exhaust

- Custom Intake & Intercooler Piping

- Blitz Bov (Plumb Back)

- TTRS Fuel Pump

- LNF Injectors

- Eurodyne Software

I recently upgraded the compressor from a GTX2867r to a GTX2871R. I took the car down to Melbourne to be tuned, past 5,000rpm it started to boost creep, the tuner said that the wastegate was too small, I thought fair enough bought the car back home then researched that a lot of people are running the same setups as mine and are not having any problems.

I contacted a gent from Brisbane who was originally going to tune the car and he said the "Wastegate PID Damper" Table was set incorrectly and told me what figures to put in there. My whole tune has been completed up to 5,000rpm but the tuner from Melbourne has dropped the boost from 22psi to 7psi.

How do I increase the boost back to 22psi, so I can finish off the rest of the map road tuning? I've got six maps for boost control and this is the first car I've owned where the factory ECU controls the boost.

I've attached all the maps that are available in my software, it's a bit vague, but it's all I've got to work with! Any information would be much appreciated.

Cheers,

Tappy

I'm not familiar with the software you're using so I can't be too specific with my advice. The boost control system is likely to be controlled primarily by the tables in the boost control menu so I'd focus your efforts there. the first thing that I'd be looking at is the 'Max Wastegate Duty/ table. This reduces to 0% at 6000 rpm currently and is likely to be an overall clamp on the boost control system. I'd start by slowly increasing the values in this table and watch how it effects your boost. Do it in small 5-10% increments and test carefully.

Again without specific familiarity i'd guess that the table labelled 'Maximum VE' is a kind of boost aim table. The boost sub system uses a PID control algorithm to target a specific boost pressure so I'd imagine that the maximum VE table is going to influence the ECU's boost target.

When tuning a factory ECU often you need to experiment a little to find out how a certain table influences the engine. Unlike an aftermarket ECU, often there isn't going to be a manual or help file that specifies exactly what to change and where.