991.1/991.2 GT3, GT3RS, 911R



I'm very happy with it. In terms of affecting the cars outright performance, as such, I cant really say till I've been on the track, strip or Dyno with it - but Ill eat my hat if the car isn't measurably quicker in all situations. On a fast back road run for 150 miles it felts quicker for sure but... read more

Mark, Australia
991 GT3 Race Headers

93mm Throttle Body, Center Plenum Kit

Center Plenum, 93mm Throttle Body and plug and Play wire harness


Click on a photo to enlarge.

In testing the 991.2 GT3 and RS we found the intake to be restrictive.  With the addition of the larger 93mm Throttle Body and Center Plenum you can allow the car to breath better.  We measure this by comparing the atmospheric pressure outside of the Plenum to the pressure inside the plenum.  Ideally we want no differences.  This change helps reduce pressure losses from about 0.6psi down to 0.1psi when used with our Dual Reverse Cone Airbox.  



This Kit fits all 991 GT cars (991.1 GT3/RS, 991.2 GT3/RS and Touring).

Kit Includes

Big Mouth Center Plenum

93mm Throttle Body

Adapter Harness

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