I have an 2001 coupe 6-speed.About a year ago i put American racing long tubes headers-catted,ported throttle body,breathless performance air bridge with vortex ram air box,and corsa indys.New spark plugs and msd wires.Wow what a differents in power.Now,everyone is telling me i should get a tune,and i will even feel more hp with these mods.Will i notice anymore hp with a tune.Im going to have east coast superchargers give me a tune at the corvette carlisle show this year. Thanks all.......Dan