Join Date: Mar 2014
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While I own a 6.7, mine isn't deleted due to voiding the warranty. There are better people to ask this question than I and you would be well served to go to the "6.7 Performance Parts Section" and start reading and asking questions. It will all sound overwhelming at first, it did to me when I deleted my 2008 6.4.
Educate yourself and it will pay off. You will have,,, I'm guessing, $2000 in the whole deal if you go with an H&S tuner and do the deletes. That's what I used and it was worth every penny I paid for it. It made my truck sell quickly when I sold it, and I recovered all the money I spent on it. It is utterly amazing how well these trucks run when deleted. They are like a 4 ton missile. Some claim 5 mpg increase which I have learned is a bit...well, exaggerated I think. I got +3 mpg with my 6.4 but most people I hear say about +2 mpg, mostly because people can't keep their right foot under control. You have to look at it as an investment in your truck. It will increase it's value when you sell it, and save you $ at the pump in the interim.
Welcome to the website and I hope you are able to learn much and have a better truck for it.
Ordered Sept 21: 2017 F350 CCSB Lariat Ultimate 6.7
2002 F250 ECLB, XLT, 7.3 PSD, 4X4, Auto, TW 6pos. Tuner, 4" SS Exhaust, Britebox, EZ Down tailgate assist, Rear Air Bags, 6.0 trans cooler, Wicked Wheel 2, Corey's HPX, Dieselsite Water pump w/built-in filter, 203 degree thermostat, Max A/C assist, Oil drain valve, Non EBV pedestal & Flange, S.S. bellowed up pipes, Dieselsite Lifetime Rad. hoses & Intercooler hoses, New oil cooler, CTS Insight monitor,