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From what I have read, the FASS system just lightens your pocket. As far as chips are concerned, Edge is supposed to be one of the better ones out there. I have the TST Powermax, it was in the truck when I bought it. It does pretty good. As far as EGTs are concerned, the TST instructions say to put the cut-off at 1300F. If you get an Edge Juice with Attitude, you can set that too. Short bursts above that are ok, but you don't want to sustain over 1300 for long pulls. If you have a module that you can set the EGT cut-off and not have to worry about it because if you start to get across the temp that you set, the module will cut back power until it stays below the preset temp.
 
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