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Message: [QUOTE="KCTurbos, post: 981040, member: 13852"] Well I finally got to take it for a test drive last night after I fixed the exhaust and fuel leaks. For right now I just have my old TSD SPD tune loaded up so I know tuning is not optimal for the new setup. I was only able to drive about 10 miles... before... I... Blew... the egt probe out of its hole :dunno: the threads stayed in but the little tiny probe itself blew out. Weird... Other than that things seem to be ok. I will know more today and tomorrow as I plan to put a lot of miles on it. Just FYI... I threw on our KC68mm stage 3 with a .72ar cover... so no stage X turbo testing for now. I wanted to keep a few things the same while figuring out the new setup. One thing is for sure... I need to try out some different tunes. I am still running the same 75% nozzles so most of my tuners thought that my original tunes should be fine... or at least close. Most tuners just tune solely on nozzle size and not according to injector body... so since I went from 175/75 to 285/75 they said that the tune should be fine. The only thing they might have to do is adjust a little bit for the twin hpop pumps... Well this thing builds ICP like crazy! According to my gauge I can hit 4.9v and hold 4.8v at WOT. Even an easy roll into the throttle dumps unbelievably large amounts of smoke. Before the twin pumps it would run clean. now it is a freight train. No leaks and all sensor seem to be working. I am running the same tune, same turbo, same nozzle size as before... so I can only guess that the change in ICP is to blame. I am going to get a few revisions and try out a couple more tunes. I only got on it hard a couple of times and never from a dead stop. I think it is dumping so much fuel at the bottom end that it is actually cooling off the drive pressure a little bit because the truck feels slightly laggier than before on the bottom end and rolls a lot of coal... but the top end is super strong and is really able to dump some fuel. This turbo is not able to clean it all up. Guess it is time to start building one that can :nod: Head gaskets seem to be holding. Only time will tell how well they do. I know there was not data in any of those statements but I hope to have more info soon. I am going to start data logging and hitting up the dyno/track here really soon once i get everything figured out. [/QUOTE]