IRN BRU

I have just received my Bully Dog BDX. I have tried to find where/how you change the Tire size on this tuner.


I didn't see it in the tune file parameters or vehicle functions. Although I am not sure what KAM reset means but I didn't want to go there.


Does anyone know where/how to change the tire size on a Bully Dog?

Franchi Motorsports

iTrader: (9)

It's not KAM reset, that's something different.

Tire Size adjustment is usually listed under the user adjustable options. Go to tune the vehicle, and at some point it will ask "User adjustable options yes or no" and just pick yes, and then go into that menu and everything you can adjust in the tune yourself is there, including usually tire size.

Crockice

Hey buddy I figured it out because I needed to do the same thing.

The key is you have to modify the customs tune. Once you begin to update your tune click the option that says CHANGE in the CUSTOMAZATION screen then scroll down to TIRE REVS/MILE and change it there. Hope this helps.

If not not let me know and I can walk you they it!

Ecodude

About to pull the trigger on the bully dog bdx tuner very soon. Wish I woulda purchased it this past weekend when there was a sale on them...I was curious what you guys think of it so far after the install. Are you guys running the tune completely stock or do you have any mods? Also, does the bully dog bdx come with a tune already programmed for our f-150s or do you have to purchase the tune in addition to the bdx?

IRN BRU

It comes with a tune.

I did get custom tunes. My truck is stock except for the 295/60r20 tires that are getting mounted tomorrow. I mainly got the bdx to adjust the shift points etc due to the larger dimension tires. I will install the custom tunes for the first time tomorrow night.

I installed the tune that came with it for a few days. The power increase was noticeable and the throttle response was improved but my truck is stock air and exhaust so I didn't expect much anyway. If I didn't need it for the tire size I wouldn't have got it but the custom tunes may change my mind on that.

Crockice

I too am running a custom tune, so not sure on the BDX tune and its performance, I bought the BDX for its wireless capabilities. I have a few mods..

Retrax - bedcover
DU-HA Under seat gun rack
K&N Blackhawk Air Kit (Removed this, felt like I lost power)
Bully Dog BDX Tuner
5 Star Custom Tune 87, 91 and 93 Octane
Omega Tune by Oz Tuning..(Its LEGIT)
Magnaflow Exhaust
BDS 4inch Coilover Lift kit
Hostile Alpha 22X10
Nitro Ridge Grappler 33x12.50x22

IRN BRU

I he's my tires and wheels mounted today. Installed the 5* tune and it was a definite improvement.

chongo

Just to update this, I just spoke with Eli at BullyDog's Tech Support and he told me the BDX does not support tire size adjustment on the 15+ vehicles. I find this hard to believe as I would think I would have seen this somewhere when researching the device but I guess coming from Tech Support that is the case. A little pissed right now as I do run larger tires and would like to be able to adjust for it.

19Delta

What year do you have? I called BDX today and they said it can't be done. They even said the tuner can't do it. I find that hard to believe! I am hoping I can do it your way and it works. My speedo is off about 3 MPH.

IRN BRU

I have a 2013 and managed to change my tire size following the same steps.