Trunk audio
- 2× Hifonics HFX12D4 12" subwoofers
- Taramps BASS 800 amplifier
- QPower dual 12" enclosure
Build 001
2017 Audi A3 quattro
My daily driver and the first SoToxiq build. Every part, every phase, documented as it happens, with every price on a public build sheet.
Specs
The starting point.
- Model
- Audi A3 Sedan 2.0 TFSI Premium quattro
- Year
- 2017
- Engine
- 2.0L TFSI (EA888), 220 hp factory rating
- Transmission
- 6-speed S tronic (DQ250)
- Drive
- quattro AWD
- Color
- Tango Red Metallic (stock paint)
- Status
- Phase 1 complete
Phases
What's done and what's next.
Each phase is planned as a system: parts, tune, supporting hardware and maintenance, in the order they go on the car.
Phase 1: Turbo Noises
- aFe Magnum FORCE Stage-2 Pro 5R cold air intake
- Velt Sport turbo inlet pipe
- Turbo muffler delete
- BOV spacer kit (factory diverter valve)
Installed and driven with no check-engine light.
Phase 2: Accessport, Stage 1 & Fuel System
- Baseline service before tuning
- COBB Accessport with EQT Stage 1 ECU and DSG tunes
- do88 BigPack intercooler and charge piping
- Upgraded high- and low-pressure fuel pumps with flex fuel
Costs
Every part, every price.
What I paid, what's planned next, and what each phase costs. The full build ledger is public and updated as parts are bought.
Timeline
- 2017 Built in Győr, Hungary. A 2.0 TFSI quattro sedan with a 6-speed S tronic.
- Aug 2026 The A3 joins SoToxiq. My daily driver and the first SoToxiq build.
- Sep 2026 Trunk audio, then Phase 1: Turbo Noises. Installed and driven with no check-engine light.
- Next Phase 2, starting with a full baseline service.
Follow the build
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