I put my new plug in a little while ago and now it sounds like its backfiring out of my snorkel. I dont know what the deal is and plus my top speed used top speed used to be about 55, but now i onle got to 51. I didnt glue the "u" on my snorkel on so i took it off and then got up to 54. Do i need to change the desighn of my snorkel and what is the deal with the plug making it pop at high rpms? sorry for the long post.