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GTS
VW MK4 1.8T Stage 2 Tune (AWW/AUM/AWP)
17 reviews
USD $399.99
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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 2: 235 HP / 280 LB-FT
Fits
VW MK4 Golf, GTI, Jetta and New Beetle 1.8T with engine code AWW (150 hp, 2000-2005), AUM (150 hp, 2001-2005) or AWP (180 hp, 2000-2005, also the Audi TT 180). All three share the same hardware, which is why they are grouped on one listing. The calibration itself is written for your engine code. Not sure which code you have? Find your engine code in two minutes. AWD and APH are narrowband and have their own Stage 2.
What Stage 2 does
Stage 2 completely transforms the car. 22 psi on the stock K03, written for 93 octane / 98 RON and adapts to 91 / 95, takes a 150 or 180 hp car to 235. Lag removed, speed limiter removed, rev limit raised to 7200. Program switching and customizable launch control are built in. Tested on the street and the track to be smooth yet powerful. Previously sold as Gonzo Tuning Stage 2+.
What you need on the car
- Required: a 4-bar fuel pressure regulator. That is the only hardware Stage 2 needs.
- Recommended: turbo-back exhaust, upgraded diverter valve, upgraded intercooler. The calibration accounts for them if they are there.
- Running a K04-001? Pick it in the Turbo option and we calibrate for it. OEM K04 only. Hybrids start at Stage 3.
- E85 program: needs 630cc injectors. Upgraded rods are recommended.
- Clutch: a factory clutch will not hold Stage 2 torque for long. Plan on it.
After you order
- Order. 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. Already have one? Choose "I already have a GTS Remote Tuning cable".
- 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 engine code, 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
- Program switching: more than one tune on a single flash, switched from the driver's seat with no laptop. Typical maps: Stock for the dealer, 93 for daily driving, 100 octane or E85 when you have it, Valet when someone else has the keys.
- Launch control: Soft (no pops) is included free. Hard 2-step / antilag is an add-on, for off-road and competition use.
- 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.
- Spare ECU: we supply a tuned ECU so your original stays untouched on the shelf.
- Mail or Remote: remote is what most owners pick. Mail-in if you would rather not touch a laptop. Own cable if you have tuned with us before.
Stage ladder: AWW / AUM / AWP
| Stage | Power | Boost | Needs | Price |
|---|---|---|---|---|
| Stage 1 | 220 hp / 240 lb-ft | 18 psi | stock hardware | $349.99 |
| Stage 2 (this page) | 235 hp / 280 lb-ft | 22 psi | 4-bar FPR | $399.99 |
| Stage 3 | custom, built for your turbo | 22 psi and up | 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, wideband if narrowband, forged rods | $649.99 |
Hold torque to 300 lb-ft on a stock bottom end. Read the 1.8T 20v Tuning Guide for what each stage really gains and which codes need a wideband swap first.
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.