is there any performance with an axle back exhaust...or do i have to change out the s-pipe and mid pipe to get performance..???

Out of an axleback, you should expect maybe 2 or 3 whp, nothing noticeable. And even with an spipe and midpipe, you may gain just a little hp, but you may not get it where you want it, i.e. it shifts the power to one specific part of the power band.

ahh allrite thanks....

some axle backs will give you upward of 6whp
some of the less flowing designs such at the TRD will most likely net you around 3whp though

im getting a custom cat-back system made...its way cheaper then buying an axle back

Hmmmmm........ maybe there are gains but butt dyno wont show much.

my advice...

by the nts pulley kit, should feel summin there

an axel back should give u about the same HP as a neon under your car. I like the pulley kit idea though but it is alot harder to put on if u r planning to do it yourself. You will need an air wrench. If u have a few hundred bucks my advice is an intake and springs!!

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A straight-through axleback muffler has been shown to give 5-6whp gains on a manual tC:

http://www.scionlife.com/forums/viewtopic.php?t=80070

Replacing the s-pipe & midpipe is a waste of money IMO, unless going turbo (where you will NEED to move up to a 2.5" exhaust.) Putting on a 2.5" s-pipe and midpipe on a naturally-aspirated tC will only serve to kill your low-end torque.