Workshop Stage 1 · custom file
Audi a1 04C906026AK Stage 1, CAT and OPF
Send the original dump
Three steps. You keep the original read. We return the Stage 1 file after payment.
Read the ECU
Take a full original dump with your tool. Keep that file. Do not send a Stage 1 read.
Send it here
WhatsApp the dump with this SW/HW. We confirm the job and the Stage 1 estimate below.
Pay and receive
After payment we send the tuned file back on WhatsApp or email. No public download link.
File identity
| Software number | 04C906026AK |
|---|---|
| Hardware number | 04C907309AE |
| ECU family | MED17521 |
| Brand | Audi |
| Model | a1 |
| Page intent | Custom remap — upload your original |
| In the library | original |
| Original file | Yes |
| Software numbers | 04C906026AK |
| ECU families | MED17521 |
Read and write methods
Flash tools recorded for this ECU family — OBD: Alientech KESS3, Autotuner, Magic Motorsport Flex, PCMFlash; bench: Alientech KESS3, Alientech K-TAG, Autotuner, Magic Motorsport Flex; boot: Alientech K-TAG, Autotuner, Magic Motorsport Flex.
OBD
- Alientech KESS3
- Autotuner
- Magic Motorsport Flex
- PCMFlash
Bench
- Alientech KESS3
- Alientech K-TAG
- Autotuner
- Magic Motorsport Flex
Boot
- Alientech K-TAG
- Autotuner
- Magic Motorsport Flex
Bosch MED17 Tricore petrol.
Catalogue for this ECU family. Confirm the protocol in your tool for this exact car before you connect.
Petrol solutions
Stage 1 plus catalytic converter off. OPF / GPF off is listed when that petrol particulate filter is fitted — not every year of this engine has one.
Stage 1
More HP and Nm on the stock hardware. The catalytic converter stays fitted unless you also order CAT off.
Catalytic converter off
Three-way catalyst monitoring disabled in the map when the cat is removed, or for off-road / competition use. These petrol engines have a catalytic converter.
OPF / GPF off
Otto / gasoline particulate filter disabled when that filter is fitted. Later Euro 6d cars may have OPF; earlier years of the same engine often have CAT only. Confirmed from the original dump.
EGR off
EGR switched off where this petrol engine uses it.
Offered on this remap
How the remap works
You upload the original Audi a1 dump on this page (WhatsApp). We return Stage 1, catalytic converter off, and OPF / GPF off when that filter is fitted after payment. You receive the tuned file on WhatsApp or email — not a public download. Original virgin dumps belong on ecuflashfiles.com.
Stage 1 estimate
No HP/Nm quote is on this page yet. Send the original dump and we confirm figures before you pay.
Related
FAQ
What is software number 04C906026AK?
04C906026AK is listed on MED17521.
What type of ECU is MED17521?
MED17521 is the ECU family recorded for this file on the Audi a1. The page only names vehicles that appear in the library — it does not guess other applications.
Which tools work on OBD, bench and boot?
Flash tools recorded for this ECU family — OBD: Alientech KESS3, Autotuner, Magic Motorsport Flex, PCMFlash; bench: Alientech KESS3, Alientech K-TAG, Autotuner, Magic Motorsport Flex; boot: Alientech K-TAG, Autotuner, Magic Motorsport Flex. Bosch MED17 Tricore petrol. These are catalogue lists for the ECU family, not a test of this exact car. Confirm the protocol in your tool before you connect.
Do you remap the Audi a1?
Yes. Upload the original Audi a1 ECU file. Solutions offered: Stage 1, Catalytic converter off, OPF / GPF off, EGR off. This is a petrol engine: catalytic converter off is offered, and OPF / GPF off when that filter is fitted — not DPF.
Where do I get the original file?
Instant original downloads, when they exist, are sold on ecuflashfiles.com. This site only returns a custom remap after you upload your original dump.
Can DPF off, EGR off, OPF, SCR or Stage 1 be used on the road?
In some regions, DPF off, EGR off, OPF / GPF off, SCR / AdBlue, and even Stage 1 may be used only on off-road and competition cars. Road use can be restricted or prohibited. Confirm the law where the vehicle is registered and used before you flash.
Files are released only after payment and a permission check. Do not flash unverified dumps. In some regions, DPF off, EGR off, OPF / GPF off, SCR / AdBlue, and even Stage 1 may be used only on off-road and competition cars. Road use can be restricted or prohibited. Confirm the law where the vehicle is registered and used before you flash.