I thought it was pretty good in the first 300 miles, then was able to bump up to 7500 rpm. Really started making power up near that point. After the 1st oil change at 600 miles it was game on. After the front end came up on that first ride after the oil change (in 3rd gear mind you) I knew it was pretty fast. Fast forward a year later, finally got a way to add fuel via a PC-V. 15+ more hp. Late last summer I finally got my hands on a programmable ecm and was able to get it tuned for the exhaust. Night and day difference from stock. It's at 179 hp at the wheel now without the ram air in effect. Best guess is it's at 185+ at the wheel when running down the road.