If your engine is 100% stock, you should expect to see an increase of 30-35 horsepower using our product. If you have modifications such as a cold air intake system, throttle body upgrades, full exhaust systems, high flow downpipes if applicable, upgraded intercoolers and so on, you could gain up to 60 horsepower over baseline. (Suggested for higher displacement engines such as V6's and V8's)