okay, a few quick questions.
1. (this goes to people with the trd axle-back) Do you think it was worth the money to spend on the trd one through toyota, or does it make no real good difference, and do you regret getting it and wish you went with an aftermarket brand?

2. (to pretty much anyone) does anyone know where i could order an intake manifold? and which brand of the manifold to you reccomend?

 

if you plan to complete your exhaust from the header back, the trd axleback is going to get VERY loud.
at the moment, i don't know of an aftermarket intake manifold besides some one-offs.

 

holy crap a search button...................................... I had no Idea.

 

any axle back will make no real/noticeable difference. Those that say they can feel 3-5 hp can probably hear it more than feel it.

Purchasing any aftermarket/accessory parts from the dealership is a waste of money. Not to say those parts are a waste of money, but if you buy it from a dealership, then it is. (there are many vendors that sell OEM accessories for about 20 to 50% off the dealership price....which could be found if you did what HP_Pirate said to do)

There are no after market intake manifolds. I believe our's is plastic and you may even need to drop the engine to get to it. If you want a bigger bored one, get some heavy grit sand paper and have fun!