Yeah, what hammertime said. You gotta pull it while you're still under power or it won't open. Ask me how I know LOL. I don't really need mine but the rules require it. Mine is a stroud too and the hit is very mild but you can feel it when it opens. I've pulled mine on the 1/4 at just a little over 150. My car et's and mph's close to what your's is. Funny thing is my boy asked me to pull the 'chute last night at the track. I forgot the 1st 2 time runs but remembered on the last one. He said he thought I forgot again untill he saw the pilot popping out. The coolness of it is worth the trouble repacking. 8) 8)