Does anyone know the stock sizes for the AT & MT throttle bodies? I can’t seem to find them anywhere.

 

Not sure sorry. Might want to try and ask Alpha werks. I know they have an aftermarket body. so they should know the stock size.

 

I want to say I think it's 55mm. Not to sure on that though.

 

my current TB size is 62mm
OEM size is 55mm (i think)

 

benefits of a larger throttle body?

 

more flow

 

More air in the motor, more fuel in the mixture = More Power. A/F Ratio is a very important part of tuning your car.

 

your going to see more gains on a FI car with the oversized TB than n/a
but i still can feel it, gave it a lil more umph than before, but not HUGE difference

i haven't seen anyone receive or install the alphawerks TB
i had mine done at local shop

 

you just had your bored a bit? Was 62 the max they could go? did you taper it in? Or did they replace the butterfly and the holder?

 

I figured as much that it was an A/F thing. A recommended uphgrade if you plan on building up your motor? or, worth dropping the dimes on for bolt-on FI? (yes, I realize 'worth' is quite subjective)

 

whered you get your larger TB from?

 

interested, watching this thread :D

 

^^^ Same. Haven't thought too much about going with a larger TB. Anyone else go with this upgrade?

 

Maybe in a package with the Head stage 1 and the throttle body there will actually be some very noticable gains. :D