Thanks for taking time to help me out. Ive read MANY posts and searched but am unable to find anything.
Recently purchased a 2010 F150 SCREW Platinum 4x4 91k miles 5.4 It already had Edge CS with canned tunes mounted in the dash pod. Level 3. After being on this site 3 weeks, I decided that I needed more. Ordered a STC X4 from 5* and a custom 93 tow/perf with 6 lockout. SO really likes the display on the CS (mainly the digital MPH) and I like the readily available PIDs. After receiving the x4, I returned theCS to stock 0. Uploaded the custom 93 from Mike, then plugged the CS back in for realtime diagnostics. Is this OK? Or did I choke down the power of the x4? Drove @ 500 miles (some traffic mostly highway) in last 2 days. Didn't notice a seat of the pants difference really. I have 35" tires and stock 3.55 (H9) gears. Should I regear to 4.56 ? Can I keep my CS plugged in for all the other features as long as its on 0? Thanks again for the help.

 

It's fine to use the CS as a set of gauges while having your truck tuned using some other device. Used this way, the CS is just a monitor and is not doing ANYTHING to the tune you've installed. It is not "choking down" the power that the X4 gave you. As long as you apply a tune from one device only (as you have done), you'll be fine.

I suspect the lack of power you experience IS due to the big tires and the 3.55 gearing. If you want faster acceleration, and possibly better gas mileage, you DO need to regear. Your current setup is putting the engine on a constant state of very high load (unless you're going downhill).

- Jack

 

Thanks Mr Jack. I appreciate it. I'm looking now for a decent shop to perform regear. Will any average auto mechanic be able to do it or should I look for a "specialist"? After regear ill get the tune modified.
As for downhill, or any hill for that matter.....not down here. Thanks again. This site rocks

 

Well, I honestly don't think it takes a "Rocket Scientist" to change the gearing in a truck, but I imagine a "good ol' Bubba" could screw it up. I'd probably look for places that advertise that kind of work and then visit their shops, get estimates and form your own impressions of the kind of service they might perform.

After that, unless you can get recommendations from a trusted source, you should probably go with your gut.

- Jack