I guess I didn't put much info in my first post so maby this will help with getting any info. I'm running an 08 apex with the 310 kit on it. The sled has 1300 total k on it. Turbo since new so far this year I have been out 3 times and have burnt up 2 flex tubes and had my primary blow into 10 pieces so it is geting very frusterating. If any one has any info at all on any aftermarket flex tubes that hold up better or any info as to why 2 have gone in a matter of 170 k please let me know. It is my first sled and I really don't know anything about them. Thanks for the help