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
IPD Plenum - GT3 Throttle Body 981 3.8L
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IPD Plenum, GT3 Throttle Body, silicone adapter and correct position breather hoses for 981 3.8L (GT4 and Spyder)
Works for Dundon Intake Runners