Originally Posted by
vnmsgt
What Restrictors are you guys running on your Go .21 3-ports?? I have one and am trying to get long run times and installed 6.5 GO restrictor. I have it running well but it lacks power really bad. I have heard some people say they scream but I am thinking I am choking it down too much. My friends Sportwerks .21 was whipping up on my in the straights.

IDRC 6 and 7 mm inserts, awesome peice, great runtimes over stock inserts.