Hello all, I recently got a 2011 FX2 Screw Ecoboost, sterling gray. I want to put a leveling kit and 33's with 18's. Im looking at Method racing wheels or Fuel offroad boost wheels. Tires are going to be Nitto terra or tail grapplers (325/60/18 terra/ 285/65/18 trail ) or the new General Grabber 33x12.5/18. My question is has anyone here that owns an ecoboost that has put a leveling kit and bigger tires had any problems. I called my dealer and asked them about reprogramming the computer he didnt know what I was talking about. I want to doit right and have my speedometer calibrated and pretty much not throwing away my warranty. I've seen different dealers sell leveled or lifted ecoboost, just wondering how they do it.

 

I'm actually in the same boat, just bought a FX4 5.0 and am looking to put some 33x12.5 Grabber AT2 and Fuel Offroad Octaines in either 18 or 20".

I don't think the dealer can re-program for 33" tires as I think they only have the stock options to choose from on the new trucks.

I don't have the Ecoboost but I have seen some programmers for the 5.0 to reprogram for tire size. There may be one for the Ecoboost but I'm not sure if the turbo's make it more complicated to tune.

I had a Hypertech with my 2003 FX4 that had a 6" Fabtech and 35's and I loved it, made the shift points much firmer and fixed the speedo so it was spot on. Never had a single issue with it.

My biggest frear right now is worrying if the level and bigger tires will mess with the traction control and RSC, I've seen that some guys in 09-10 F150s have had troubles with it after leveling and bigger tires.

Good luck.

 

I put 325/60-18's on my FX4 and the speedo is accurate without calibration checked with gps. Leaves me wondering if they need calibration with the stock tires from the factory? Had same experience on my 2005, with 33's the speedo was accurate, I ran the stock wheels and tires in the winter and the speedo was off then.