1st mod for my box! It sounds great, looks great, and seems to add some oomph to my box, but that could be due to the fact that I'm letting the engine rev higer to listen to the nice sounds...

What should I do next Headers or Cat back exhaust?

I would do the exhaust before the header.

Then again, I'm not an expert on Scions.

i agree, get exhaust before header. because the extra flow from header will just be killed by factory exhaust

Man this answered some questions i had...:)...thanks...i have been thinking of putting an intake system on mine....i really want to get injen as well...thanks...Hope you have fun modding your ride...

I'm partial to Injen as I have Injen intakes on both of my cars. Excellent fit, excellent finish on both polished intakes, and excellent quality. Plus they are made in house in SoCal.

It doesn't help that Injen is also run by some really nice peeps also.

No I'm not sposored by them either or have any financial interets in Injen.