Audi TT Tuning Catalog for Performance EnhancementsTuning Solutions for the 2000 Audi TT 1.8T 225HP Engine:

1.8T 225HP Stage 1 - 91 Octane

1.8T – Stage 1 ECU Tune (91 Octane)

Our Stage 1 ECU calibration is the perfect entry-level performance upgrade for the 1.8T. Designed to work on completely stock hardware, this tune extracts noticeable gains in horsepower and torque while maintaining factory reliability and drivability.

Requires

Upgrade	Requirement
91 Octane / 95 RON	Required

Notes

1.8T 225HP Stage 1 - 93 Octane

1.8T – Stage 1 ECU Tune (93 Octane)

For drivers with access to premium 93 octane fuel, Stage 1 (93) provides even more performance without requiring hardware upgrades. This calibration sharpens throttle response and delivers stronger midrange torque for a more exciting driving experience.

Requires

Upgrade	Requirement
93 Octane Fuel / 98 RON	Required

Notes

1.8T 225HP Stage 2

1.8T – Stage 2 ECU Tune (93 Octane)

Stage 2 is designed for enthusiasts ready to unlock the full potential of the 1.8T. With supporting hardware, this tune delivers substantial performance gains while preserving daily drivability.

Requires

Upgrade	Requirement
93 Octane Fuel / 98 RON	Required
Upgraded Downpipe	Required