Single tune chip, must choose power option when ordering. Levels 1-4 are emissions compliant, Level 5 is race only.When nothing less than 'more' will satisfy you, go with Banks Big Hoss Module. Big Hoss is a calibrate-to-order module, in up to 5 power levels (for 1994-03 models), that adds up to +120 hp and +233 lb-ft (with recommended airflow improvements). A pyrometer is recommended (see the Gauge section under Instrumentation). Tunes pulse width and timing.Up to 5 power levels:Level 1- up to +45 hp & +79 lb-ftLevel 2 - up to +60 hp & +111 lb-ftLevel 3 - up to +85 hp & +151 lb-ftLevel 4 - up to +100 hp & +215 lb-ft (Levels 1-4: emissions compliant)Level 5 - up to +120 hp & +233 lb-ft (Non-street, high-performance use only)Key Features: Level 4 Street Tune provides gains up to +100 hp/+215 lb-ft. Level 5 Race Only Tune Provides up to +120 hp/+233 lb-ft. Levels 1-4 are emissions compliant, level 5 is race only. Destroys the competition, not your vehicle! ActiveSafety protects engine/powertrain. A calibrate-to-order module. Loaded with Features. Value Priced. Easy Install