++ 1.8T Tuning Guide:

+ Stage 0: Free / Budget Modding

+ Stage 1: Bolt-Ons

+ Stage 2: Other Parts

+ Stage 3: Medium Turbos

+ Stage 4: Big Turbos

+ Weight Reduction

+ Handling

 

+ Stage 1: Bolt-Ons

+ Ready to get the most out of your car? Stage 1 is a huge improvement over stock. Most of the following mods can be done yourself, a repair manual (i.e Bentley) would be a good reference tool.

• Reflash your ECU: ~$350-600

Description:	Companies / Octane / Programs offered
Flashing or "chipping" your stock computer will give you more aggressive timing as well as more boost, which equals much more HP/TQ. Most programming will offer approx. 25-45+ hp and approx. 50-75+ ft-lbs of torque gained.	APR: 91/93/Stock/Valet/Race Programs GIAC: 91/93/100/Stock/Valet/Lock Programs Neuspeed: 91 Program Revo: SPS Controller EIP: 1.5 Bar

• Aftermarket Diverter Valve : ~$100-150

Description:	Common Companies
Diverter valves are prone to failing because of the increased boost after chipping. 710N DVs are rumored to last longer, however, an aftermarket DV is always a good precautionary mod.	Forge Samco Bailey Hyperboost

• Downpipe: ~$100-500

Description:	DIY Links
The factory downpipe is very restrictive and should be replaced with a larger, better flowing unit. 2.5 or 3 inch downpipes can be used. 3 inch systems shift the powerband up while 2.5 inch retain a mostly stock band. + Note: Catless downpipes are available. You may receive a CEL caused by the altered exhaust. Possible solution	Advice Install Basics Complete Install

• Catback: ~$200-600

Description:	Info
The factory catback (55mm) is also restrictive and should be replaced with a larger, better flowing unit. 2.5 or 3 inch catbacks can be used. 3 inch systems shift the powerband up while 2.5 inch retain a mostly stock band. Custom catbacks are a viable option. + Note: A Turboback is a combo. of a DP + Catback	Listen to popular exhaust systems Autotech Install Guide eG Solid DIY APR Install Shop Cost to install

• Intake: ~$100

Description:	DIY Links
Replacing the factory airbox with an aftermarket intake is a very controversial mod. Aftermarket intakes lower air intake temps, and will usually produce the popular "pssh" sound.	Cold Air Intake (CAI) Info. CAI Install More results

• Boost Gauge: ~$100-200

Description:	DIY Links
To avoid severe engine damage when increasing boost levels, an aftermarket boost gauge is mandatory. Boost gauges can also display vacuum / leaks.	Install Another Install Where to tap power/ground

• Continue on to Stage 2