Originally Posted by Rusty

You really don't need a tune unless you do all 3. That is a cai, lth's, and cbe. The ECU will handle lth's by their self and with one other breathing mod. I have the FI LTH, 12" resonators, cbe and G3 cai. The ceramic coating helps keep the heat in the tubes, increasing exhaust velocity. Which is best is a personal choice. They all make about the same gains. You also forgot about the Z1 shorty's. They make about the same power.

Which ever you choose. Remove the O2 sensors first! DO NOT USE an impact gun on them. The right side will take you about 1.5 hours, counting beer breaks. The left side will take you 6+ hours and lots of cussing. It's best to move the manifold and down pipe together as one. This way, you don't have to mess with the demon bolts. Solder the wire extension together for the O2 sensors. Don't cheap out here.

Been there, done that!