will it make a difference w all the mods i have done..I dont want to go too big on the streets due to the fact that the car is a tiptronic..Love the power..supposedly it gives more midrange power and noticeable throttle response, and some top end..??

 

This one - http://www.vividracing.com/catalog/a...9-p-79632.html

Dyno proven, the TB increased size is what really makes the power. Probably sold about 30 of these here. Alot of midrange and top end gain. With all our Agency Power parts, Satisfaction Guaranteed! Lets get it on your car

 

how much bigger is the plenum over stock?