l have a scion tc supercharged, with intake, headers,and exhaust. is der anyway other way l could get more HP??

Smaller pulley. The 2008 models are tamper proof still so if you have that you are out of luck until someone figures out how to get it off.

510Driver - Flywheels do not add horsepower.

If you have not yet, you can get a lighted flywheel, if it is a Manual, or you can get a lightened crank pulley. An aftermarket ignition system might help out or maybe even if you can figure a way to run an intercooler set up. But if you really want to get some HPs, you can take off the supercharger and go turbocharged, many kits available. Just throwin out some ideas, hope it helps!

The same way you add more HP to a car without a supercharger.

First off, aftermarket crank pulleys can totally mess up ur engine if u r not careful. The evergoing crank pulley discussion is an entire topic in itself, but l would advise u to stay away from cranks until u become more familiar with how they work. Here is what Toyota has to say about crank pulleys:

http://suprasonic.org/public_html/sonictech/tet/dualratedamper.html

Other than crank pulleys, there is plenty of ways to increase horsepower other than intakes, headers, & exhausts.. do a little bit of research. Also, if u have not had ur car tuned, you're not getting nearly as much out of it as u could. Find a trustworthy tuning shop if & when you're done buying mods.

Check out http://Club-tC.com

We have been in great discussion on this topic for sometime now. The to your question are there. l m at 228.4WHP with a major upgrade going on right now to 300WHP on the TRD S/C. Also, Brian Crower is going to be grinding me a set of cams when they get their cores instock.

ZP l racing sells stage 1 and stage 2 heads. The stage 1 is are $750 the stage 2 is are $2700