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Audi S3 8PStage 1 to Stage 4 tuning guide

The S3 8P has the EA113 2.0 TFSI with the bigger K04 turbo: Audi rated it at 265 PS and 350 Nm from 2,500 to 5,000 rpm, with quattro and a six-speed manual (Audi UK); a six-speed S tronic twin-clutch followed (Audi UK). It is the same K04 engine as the Golf R Mk6 and the TTS 8J, with a timing belt and direct injection, and it was never sold in the US, so most tuners here are European.

Years
2006–2012
Engine
2.0 TFSI EA113, K04 turbo (BHZ / CDLA)
Gearbox
6-speed manual or 6-speed S tronic (DQ250), quattro
Stock power
265 PS / 350 Nm

Updated

Lowered yellow Audi S3 8P with a front splitter, black wheels and yellow brake calipers

Power by stage

Stock is Audi's figure. Stages 1 to 4 are tuners' figures at the engine, in PS or hp as each one publishes them (1 PS is about 0.99 hp); from Stage 2+ they ask for 98 RON, the best fuel sold in Israel.

Stock265 PS
Stage 1300–315 PS Stage 2315–380 PS Stage 3400–435 PS Stage 4497–525 hp

Names with an arrow go straight to that part's product page for this car. Names in a dashed outline are other brands that make the part; exact links for them are being added.

1

Stage 1: Software only

300–315 PS

A remap takes the K04 engine to about 300–315 PS. REVO quotes 300–315 PS and 318–333 lb-ft from 265 PS (REVO); QSTuning's own software 310–315 hp (QSTuning); and APR 310 hp and 311 lb-ft, or 337 hp with its intake-specific file (APR, at QSTuning). TVS Engineering's Stage 1 is milder, at 280 hp and 400 Nm for €399 (TVS Engineering).

Typical cost: QSTuning £449, APR £609.32 (QSTuning) or TVS Engineering €399; DSG software from €299 (TVS) or £662.33 (APR).List prices, Sept 2026, before shipping, import tax and fitting.

Stage 1 tunes compared

TuneFuelClaimed powerPriceNotes
REVO Stage 1—300–315 PS—318–333 lb-ft; sold through REVO dealers
QSTuning Stage 1—310–315 hp£449Software for the K04 2.0 TFSI
APR Stage 1—310 hp£609.32337 hp with the intake-specific file
TVS Engineering Stage 1—280 hp€399400 Nm; with DSG Stage 1 €599

Parts list

Before you buyCheck the high-pressure fuel pump's cam follower before the tune: STR Performance advises replacing it every 15,000–20,000 km on a Stage 1 car (STR Performance). APR notes that raising the DSG's limits doesn't make it hold more torque.
2

Stage 2: Intake, intercooler, downpipe and fuel pump

315–380 PS

Stage 2 adds an intake, a turbo-back exhaust with a high-flow catalyst and an intercooler: REVO quotes 315–330 PS, and 330–370 PS for Stage 2+ with an upgraded high-pressure fuel pump (REVO). QSTuning's Stage 2 is 335–350 hp and its Stage 2+ 370–380 hp (QSTuning), and TVS Engineering's 330 and 370 hp, with 98 RON required from Stage 2+ (TVS Engineering).

Typical cost: Wagner intercooler £840 (QSTuning) or Forge €932 (GT2i); Milltek downpipe £448.49; Racingline intake £509.75; Autotech fuel pump €283.33 before VAT.List prices, Sept 2026, before shipping, import tax and fitting.

Stage 2 results compared

SetupFuelClaimed powerPriceNotes
REVO Stage 2—315–330 PS—Intake, turbo-back with high-flow cat, intercooler
REVO Stage 2+—330–370 PS—Adds the high-pressure fuel pump
QSTuning Stage 2 / 2+—335–350 / 370–380 hp£549 / £5992+ adds the fuel pump and plugs
TVS Engineering Stage 2 / 2+98 RON for 2+330 / 370 hp€499 / €599500 / 550 Nm

Parts list

  • Intercooler recommended Wagner CompetitionForgeRacinglineAPR

    Wagner's kit lists the S3 8P: £840 at QSTuning. Forge's is €932 at GT2i.

  • Downpipe and exhaust required Milltek large-bore downpipeScorpionRacingline

    Milltek's de-cat downpipe for the S3 8P is £448.49 and needs a Stage 2 remap.

  • Intake recommended Racingline cold air intakeREVOAPRForge

    Racingline's intake for the K04 2.0 TFSI is £509.75 at QSTuning.

  • High-pressure fuel pump optional Autotech HPFP kitAPRLoba

    For Stage 2+: Autotech's kit is €283.33 before VAT at TTE.

Before you buyMilltek sells its de-cat downpipe for off-road and motorsport use only, and a car without a catalyst won't pass Israeli inspection. With an upgraded fuel pump, STR Performance replaces the cam follower at every oil change.
3

Stage 3: Bigger turbo

400–435 PS

The next step is a bigger turbo. REVO's Stage 3 file is written for a Garrett GT3071R and makes 400–435 PS (REVO). In the stock position, TTE rates its TTE420 for the S3 8P at 420 hp, at €1,884.95 (STR Performance), and Loba says its LO400 can make 400 hp, at €2,254.95 (STR Performance).

Typical cost: TTE420 turbo €1,884.95 or Loba LO400 €2,254.95 (STR Performance); TVS DSG software for 600 Nm €799.List prices, Sept 2026, before shipping, import tax and fitting.

Turbo upgrades compared

TurboFuelClaimed powerPriceNotes
REVO Stage 3 (GT3071R)—400–435 PS—380–410 lb-ft; needs specific hardware
TTE420—420 hp€1,884.95Stock position; needs a remap
Loba LO400—400 hp€2,254.95Fits BHZ and CDLA engines

Parts list

  • Upgraded turbo required TTE420Loba LO400Garrett GT3071R

    Stock-position turbos keep the factory manifold and downpipe routing.

  • Fuel system required Autotech HPFP kitAPRLoba

    A bigger high-pressure pump and, for the larger turbos, injectors.

  • Clutch or DSG software required TVS DSG Stage 3SachsDodson

    TVS's DSG software for 600 Nm is €799; manual cars need a stronger clutch.

Before you buyBudget for the turbo, fuel pump, intercooler, exhaust, clutch or gearbox software and a custom tune together. A changed turbo isn't road-legal in Israel without approval.
4

Stage 4: Built engine and big turbo

497–525 hp

The top builds have forged internals. REVO's Stage 4 file, for fully built engines with an uprated valve-train, makes 400–497 PS (REVO). Peron Automotive's Stage 4 tune targets 500–525 hp on 99 RON, with a Precision 5558 or GTX30-size turbo, forged pistons and rods, upgraded injectors and fuel pumps, and TVS gearbox software for up to 600 Nm, for £850 before VAT (Peron Automotive). TVS Engineering says Stage 4 needs a forged engine (TVS Engineering).

Typical cost: Peron Stage 4 software with TVS DSG £850 before VAT; TVS Engineering Stage 4 €1,499.List prices, Sept 2026, before shipping, import tax and fitting.

Built-engine builds compared

BuildFuelClaimed powerPriceNotes
REVO Stage 4—400–497 PS—Fully built engine, uprated valve-train, 8,000 rpm
Peron Stage 4 + TVS DSG99 RON500–525 hp£850 + VATSoftware only; the hardware list is long
TVS Engineering Stage 4——€1,499Needs a forged engine

Parts list

  • Forged pistons and rods required WisecoManleyIE

    Every Stage 4 file here asks for a built bottom end.

  • Big turbo required Precision 5558Garrett GTX30

    Full-frame turbos with their own manifold.

  • Fuel and gearbox required Autotech HPFP kitTVS DSG software

    Bigger injectors and pumps, and gearbox software or a performance clutch.

Before you buyStage 4 is an engine build, not a bolt-on: choose one shop to build, tune and stand behind the whole package. 99 RON isn't sold at Israeli filling stations, so ask for a 98 RON file.

Where to buy

OBDeleven's plug-in reader and app offer one-click customisations for Volkswagen-group, BMW, Toyota, Ford and Mercedes-Benz cars. ECS Tuning is a US parts shop that stocks several of the brands in this guide and takes international orders; import tax and duties are charged on delivery. It lists US-market fitments. Check the fit for your car and the shipping cost before you order. We earn a commission on orders through these links, at no extra cost to you (how the site makes money).

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Quick answers

How much horsepower does a stock Audi S3 8P have?
265 PS from the factory.
How much hp does a Stage 1 Audi S3 8P make?
Tuners claim 300–315 PS at Stage 1, up from 265 PS stock (Stage 1 options).
How much hp does a Stage 2 Audi S3 8P make?
Tuners claim 315–380 PS with a Stage 2 file and the parts it needs (parts list).
How much hp does a Stage 3 Audi S3 8P make?
Tuners claim 400–435 PS at Stage 3: bigger turbo (Stage 3 parts).
How much hp does a Stage 4 Audi S3 8P make?
Stage 4 is the top of the ladder for this car: built engine and big turbo. The biggest builds claim 497–525 hp. Check which fuel each figure needs: Israel sells 95 and 98 octane only (Stage 4).
How much does a Stage 1 Audi S3 8P cost?
List prices: QSTuning £449, APR £609.32 (QSTuning) or TVS Engineering €399; DSG software from €299 (TVS) or £662.33 (APR).

Questions to ask the shop

  1. Is my car a BHZ or CDLA engine, manual or S tronic, and which files fit it?
  2. When were the cam follower and the timing belt last changed?
  3. Will you log knock before and after the tune, and is the file written for 98 RON?
  4. Do you clean the intake valves? Direct injection means carbon builds up on them.
  5. At what torque do you advise DSG software or a stronger clutch?
  6. Does the setup keep a catalyst, so the car passes inspection?

Compare side by side: Audi S3 8P vs Audi S3 8V · Audi S3 8P vs VW Golf R Mk6 · Audi S3 8P vs VW Golf GTI Mk5

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