I was in the same boat as you a month ago. I was also worried about fuel mileage. I went with the Flux 2's and couldn't be happier. There was almost no loss in fuel mileage. I think the little I did lose is due to the fact that I can no longer keep my foot out of the peddle . But once that wears off I should be back to where I was. I still have a Floor It stage 2 pump and an HTT 64/71/13 to go on so I am sure my lead foot will be with me a while. I am seeing similair numbers as JRussell with my stock cp3 as well. But do not hammer it too hard because of the stock turbo. Good luck

 

How do you guys get that with stock CP3? Even with my chips turned off and just flux I struggle to get 17,000. Even with the EZ turned all the way on I don't see any improvement. Out-Of_Here said that the rail pressure gauge won't measure right with a pressure box as it fools the Cp3 into thinking it isn't running enough pressure so it makes it read lower to flow more. He had a very interesting post about it. It pretty much said that if your are not running a pressure box you will not see all the horsepower as if you were running one. Maybe he will get on here and say something. I think his post was over at CompD though.

 

plug your rail guage in before your pressure box and you will see accurate numbers.

 

I talked to Tim Barber yesterday, and he said definatly go with the 2s. He said they will work fine with a stock pump, I just need to turn down the TST and get everything dialed in. Then when Im ready for a new pump Ill have enough fuel to get near 700.