YES, I know that a clutch and flywheel don't add power. I don't know everything about this stuff (that's why I'm on here and other forums), but I'm not an idiot. The lightened flywheel however allows more power to realized at the wheels, would it not? But back to the pulley. Yes there were supporting mods i.e. the headers, and custom 2 1/2 in. exhaust (stock is 1 3/4). I just have a hard time believing that Unorthodox would put a product out there that would screw up the engine. Yeah, there are probably parts out there that if not installed correctly and/or not tuned would hinder rather than help. Personally I am not too concerned with the HP gained from that. My car is quick for a being N/A and an Accord! I often surprise a lot of people. However, right now, I am more concerned about this part doing damage now...and later. My next plan is to pretty much rebuild and make the engine stronger; sleeving and new pistons &rods for the bottom end, new valves, springs, and retainers, and cams & gears for the top. After I throw all that money in and possibly run a turbo after that, I don't want my engine shaking apart and ruining all the work I'd done.