Hello everyone,

This is my first proper Stage 1 calibration on my Golf 4 1.9 TDI ASZ 130 (EDC15P+), and I’ve been working on it for quite a while now .

My goal is still a smooth and reliable daily-driver setup, roughly around 165–170 hp, without an aggressive torque spike at low rpm and without smoke.

Since I first started working on the file, I’ve made quite a few changes and corrections after reading a lot of information and comparing different original and modified ASZ/ARL/BXR calibrations.

At the moment, my latest version includes:

* Driver’s Wish and Torque Limiter revised, while deliberately keeping the torque request quite soft below roughly 1900 rpm.
* Maximum requested IQ kept moderate rather than trying to chase a large injection quantity.
* Smoke limitation adjusted with the goal of maintaining a clean AFR and avoiding visible smoke.
* Duration maps checked and extrapolated properly instead of simply increasing the last values. I recalculated the extrapolation from the original progression and corrected some mistakes from my earlier versions.
* SOI has now also been modified. I mainly worked on the high-load / high-rpm area rather than adding advance everywhere, using other VAG calibrations as references.
* I checked the resulting EOI with the Krook calculator to make sure the injection is not ending excessively late.
* The N75 map has been corrected as well. I realised that some values from my previous version had not been copied correctly, so I rebuilt it properly.
* Boost-related maps have also been checked for consistency with each other.

I’m deliberately trying to keep the calibration conservative. I’m much more interested in having a clean, smooth and reliable map than trying to extract the maximum possible power from the engine.

For the moment, the car is still completely on the original ASZ hardware. My plan is to test this calibration first on the stock setup and make proper logs to check boost control, IQ, MAF, N75 behaviour and the general consistency of the tune.

Only once this version has been properly tested and validated will I fit my GT1749VB together with the Darkside Developments larger side-mount intercooler. After that, I’ll make a new set of logs and adapt the calibration to the new hardware rather than changing everything at once.

Before going further, I would really appreciate some experienced eyes on my current file, especially regarding:

* Duration / SOI / resulting EOI
* N75 strategy
* Torque progression at low rpm
* Smoke / IQ limitation
* General consistency between the different limiters

If you notice anything wrong, unnecessary or badly understood in my approach, please tell me. Criticism is welcome — the main reason I’m doing this myself is to understand how the EDC15 works rather than just copy somebody else’s Stage 1.

Thanks in advance to anyone who takes the time to have a look at it.

“Attached are the original file and the 65 mg binary.”

https://mega.nz/file/UEwxxbBC#k2KdJuzEZk_Cxb__xOzmW0y95qdsa75nPQWi_9Al53c