jRedondox

i have the same problem i went from the stock 18" wheels to the 20 and my speedometer is off by a couple of miles dealer flash computer and it shows the new tire size but it still off

jRedondox

does the hyper tech calibrator void the warranty?
do you have to flash the pcm?

the best engines

Not an ecoboost expert but the PCM is vin specific no matter what - your f150 pcm has an identification block which contains info the strategy uses such as your trucks VIN, octane adjust, fuel type, vehicle speed limit etc When changing items in this (VID) block, the strategy places range limits on certain items such as tire and axle ratio speedo etc. So the dealer won't be able to make the change . Unless ford sends dealer a special EEPROM burned with the Raptor configuration to solder into your existing PCM - but that is not going to happen. Bottom line - Buy a Raptor-

BobLobLaw

You'll be fine with that size. It's only about 3/4" taller than stock.

motox151

Where did you get your info? Cal id's are different but programmable options are not locked to a specific truck. Let me guess you are a ford tech right?

Not all trucks are having this issue. I have successfully programmed the 315 70 17 tire size (which is the raptor stock configuration in several trucks, one being an 05 and the other being my 2010) I have done MANY MANY other tire size changes. If you have ever touched IDS you would know that it lists certain tire sizes, it doesn't state or say raptor/fx4 etc etc

So on that note you are wrong, Im sure you will try and google info or try and dispute what I have said, please do. You can not dispute hands on experiences, especially since I was the tech who did all our customers lifts and programming.

To the OP, no the hyper tech does not void the warranty. All it does is changes the signal from the ABS sensor to the VSS thus correcting the speedo by adjusting the parameters in the PCM. Like with any programmer if you go into the dealer for a flash or electronic work you will want to put the stock size back in to prevent them from flashing and overwriting the adjustment.

AC Man

Not true. All F 150"s have the same tire sizes to chose from. In fact, just for kicks, my tech tried all tire choices available and NONE of them made a difference. GPS speed error is the same no matter what tire size he chose.

Hofmanns4rj

You noted that you programed an 05 and a 2010 and many others. But this thread is about programming the "Ecoboost" which did not come out until 2011. My Ford dealer who does lifts and re-calibrations "all the time successfully" tried to re-cal my 2011 Ecoboost with 325/65R18s (35's) to the raptor tire size which is close in height, but the Cal keeps defaulting back to the factory default that it came with from Ford (just as others have reported). Overall, my truck runs totally fine (maybe because I have 4:10 gears?), but the speedo is off by about 4.5-5mph at 60 which I still want to get corrected as it does not even shift to 6th gear unless I'm going at least 55mph+ (or drop to manual...force the shift to 6th, then back to auto).

Also, on the topic of a HyperTech Programmer, my Ford Dealer tried a brand new one that they got directly from HyperTech about 3 months ago. It did not work to solve this issue for the Ecoboost Engine either. So, is there a newer HyperTech programmer that has come out in recent months that works for the Ecoboost Cal issue? If there is, please post the details and part number of the programmer.

Everyone - please keep your post and information coming on this topic for the 2011 or newer "ECOBOOST Engines" (we already know re-calibration works just just fine with the other F150 engines)....

boostedf150

I don't have the tires yet..lol. I've ran bigger tires than stock on my last truck and it ran find just speedo was off and my dad has ran bigger tires on his trucks. Is this just on the "newer" or ecoboost trucks that it's this big of a deal? I'm clueless.

Ok so I won't need to do anything? (confused)...

BobLobLaw

You don't "need" to do anything. It will run just fine without recalibrating the speedo for that size tire. You can get it recalibrated if you want to. Me personally, I'm getting 275/70/18 and not recalibrating the speedo.

Wyocountrykid

Just to clarify..... This is NOT just the eccoboost's that are having a problems getting flashed. As I have the 5.0 with the same problem. What it seems to be is 2011 and newer trucks.