Originally Posted by Mr.Squeeze

If my memory serves me any good there small like 2.0-2.25. Next time you have you bumper off just look at them there tiny. It does get a little bigger after it goes into one. But from a tuning stand point, the pipe being bigger after the fact is to late.

Blow through is how this car is set up from the factory ,and all the other aftermarket kits are designed on these cars. GTM TT Greddy TT GTM supercharger Boosted performance Mid mount S & R single turbo. Stillen is the only kit that is making the car do something it was not designed to do re-locate the maf's to the front.

Having the Maf's out front you cant read intake car temp with a long from uprev. They also max out at a lower HP level because of the size location/small pipe.

Blow through you can vent to atmosphere on our cars draw through Stillen set up you can not.

This is one of the reason's I sold the kit and did not put it back on my car with the built motor I am driving around with now.

I do think there can be more power had from the Stillen kit ,but you have to change thing's with the kit. Stillen is not on these forums anymore for support nor are they putting out any other stages of the kit.