I am running a FiTech fuel command center that has been modified. I pulled out the float/valve assembly, and installed a full flow return line. I did this after talking to the FiTech folks at the Hot Rod Power Tour last year. The new fuel command center has this modification from the factory, and is much sleeker looking. I had already purchased it, so I am going to give it a try. Will get it started at Mikes (latoracing) in about 2 weeks, so will let you know. I may want to get a copy of your tuning settings if you have driven with it for a while.