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GTS
Audi A4 / VW Passat 1.8T Stage 1/2 Tune (AWM)
3 reviews
USD $349.99
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GTS calibrations are developed for vehicles with all factory emissions equipment intact and functional. Features that remove or raise factory speed and rev limits are intended for closed-course use only. These calibrations are not CARB-certified, and the customer is responsible for compliance with all applicable laws, including the emissions and inspection requirements of their jurisdiction.
The GTS difference: a real tune built for your exact car, not one calibration with three names on a dropdown. We’ve got the injectors and turbo kits to back it up, and the in-house support to actually run it. Tuning VW, Audi & Porsche since 2010.
Why we're different ›
STAGE 1: 215 HP / 250 LB-FT
STAGE 2: 235 HP / 280 LB-FT
Fits
The longitudinal 1.8T 20v with engine code AWM (170 hp, wideband) in the Audi A4 B5 and the VW Passat B5.5, 2001-2005. Pick your stage in the dropdown. The calibration is written for your car and your hardware. Not sure which code you have? Find your engine code in two minutes. The earlier B5 A4 and Passat have their own listings for the AEB and the ATW or AUG, and the A4 B6 with the AMB is on the AMB listing.
What the tune does
Written for 93 octane / 98 RON and adapts to 91 / 95. Stage 1 runs 18 psi on the stock K03 and makes 215 hp and 250 lb-ft with no parts on the car. Stage 2 runs 22 psi and goes to 235 hp and 280 lb-ft once an upgraded exhaust and a 4-bar fuel pressure regulator are on. Stage 2+ is the Stage 2 calibration for a K04-015 turbo on the stock MAF and injectors. All of them: lag removed, speed limiter removed, rev limit raised to 7000, and better mileage when you are not in it. Tested on the street and the track to be smooth yet powerful.
Stages on this listing
| Stage | Power | Boost | Needs | Price |
|---|---|---|---|---|
| Stage 1 | 215 hp / 250 lb-ft | 18 psi | stock car, no parts | $349.99 |
| Stage 2 | 235 hp / 280 lb-ft | 22 psi | upgraded exhaust, 4-bar FPR | $399.99 |
| Stage 2+ | built for the K04-015 | custom | K04-015 turbo, stock MAF and injectors, upgraded exhaust, 4-bar FPR | $449.99 |
| Stage 3 K04 | custom, built for your turbo | set for your turbo | K04 or hybrid, 3 inch MAF housing, 550cc or 630cc injectors, front mount intercooler | $550.00 |
| Stage 4 Big Turbo | custom, built for your turbo | custom | GT28 to PT6262 class turbo, 630cc or bigger injectors, forged rods | $649.99 |
Start at Stage 1 if the car is stock and move up when the hardware changes. The AWM came wideband from the factory, so Stage 3 and Stage 4 need no wideband conversion.
What you need on the car
- Stage 1: nothing. Stage 1 runs on a completely stock car. A turbo-back exhaust, an upgraded diverter valve and an upgraded intercooler are all recommended, and none of them are needed.
- Stage 2: an upgraded exhaust and a 4-bar fuel pressure regulator. The same diverter valve and intercooler are recommended.
- Stage 2+: the Stage 2 parts plus a K04-015 turbo. The stock MAF and injectors stay.
- Hybrids and bigger turbos: a K04 hybrid needs the bigger MAF housing and injectors on Stage 3, and a big turbo goes to Stage 4.
After you order
- Order. Pick your stage, then choose Remote Tuning. A GTS cable ships with your order for a one-time $40 and it is yours to keep for every tune after this one.
- Read. Plug the cable into the OBD port and a Windows laptop, Windows 10 or later. An Intel Mac on Boot Camp works too. Our software identifies your ECU and saves your original calibration before anything is written.
- Flash. We build the calibration for your car, your hardware and your fuel. You get a message the moment it is ready, and you flash it yourself in your driveway in about ten minutes.
- Log. Drive, log, send. If anything wants adjusting we adjust it and you flash again. Revisions usually come back the same day, and within 72 hours at the outside.
Prefer to mail the ECU in? Mail-in is free within the USA and Canada. We flash it on the bench and send it back in two to three days. Local? An OBD flash at the shop takes 10 to 15 minutes. How remote tuning works, start to finish.
Options explained
- Stage: pick from the table above. Stage 1 for a stock car, Stage 2 once the exhaust and 4-bar regulator are on, Stage 2+ for a K04-015.
- Launch control: Soft (no pops) is included free. Hard 2-step / antilag is an add-on, for off-road and competition use. Pick None if you do not want it.
- No-lift shift: included free with every GTS tune.
- Pops and bangs: exhaust crackle on lift-off.
- Hard cut: a hard fuel cut at the rev limit instead of the factory soft limiter.
- IMMO delete: removes the immobilizer check so a swapped or spare ECU runs without the key and cluster handshake.
- Mail or Remote: remote is what most owners pick. Mail-in if you would rather not touch a laptop. Dealer if a shop is doing the install for you, and we deal with them directly.
Why GTS
Tuning since 2010, as Gonzo Tuning first and as GTS since 2013. Every calibration is written in house and the flashing tool is ours, not a rebadged package, and we never ask for remote access to your computer. Your original calibration is kept, so the car can go back to stock whenever you want it to. Reflashes carry a one-year warranty, and if you are not happy within 30 days you can go back to stock for a refund under our return policy. Support in English and Spanish.
Ordering from Canada or overseas
Canadian owners have ordered from us since 2014 and Canada is our second-largest market. The tune is delivered digitally, the cable is delivered within Canada with no customs and no import fees, we accept Canadian cards, and return shipping on a mail-in ECU is free. Anywhere else in the world, remote tuning needs the car, the cable and an internet connection, nothing else. We have tuned cars in Australia, Germany, the United Kingdom, the Netherlands, New Zealand, Hungary, Puerto Rico, Panama, Costa Rica and Barbados.