No Dyno data. I am using AFR gauge getting the AFR dialed in and the 45 or 46 jets seemed pretty close. Driving wise the engine is normal when just driving low rpms you could still use in a parade. When you put your foot into the power band is across the board, it pulls all the way through. Without the SC I would climb hills in thid with the T5 transmision. Now 4th it motors up hills no bogging or downshifting. The engine is not louder, it does have intake carb sounds when getting on it. Also blower has slight blower wine sound. Nothing obnoxious.