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BodyKits=PantiesDrop
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So I got my MFT (my my ford touch, is that weird to say or what) updated to 2.11 and of course the tech forgot to recalibrate the screen. So both of us together had to figure it out, and of course I pulled up FF.com's thread on how to do it. Long story short we got it done but inside of that menu where the calibration setting is lies a whole bunch of cool stuff. Most notably is the GPS data which confirmed my suspicions that my speedo was off. See a few weeks ago I was on a road trip to a certain Fest of Foci located in KY and those that were following me complained of my excessive speed. I was only going 73 in a 70 but they kept falling back and were unwilling to risk a ticket to catch up. This infuriated me as no one will get a ticket for going slow as balls. I blamed their aftermarket wheels and junk messing up their speedometers. However once checking out this GPS data menu I noticed my speedometer was reading drastically low. Like 70 on my speedo was reading 75 on GPS. That could get someone who is going 73 in trouble, especially through the town of Macon, GA, which is known for charging speeders like eleventybillion dollars for tickets and which happened to be on my way home.

Anyways, has anybody else noticed theirs being off? I have a Titanium hatch with the handling package aka 235/40/18 setup.
 

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Look at the up side. Now that you know you can adjust your speed, and your warranty will last longer, if the error carries over to the odometer.
 

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Hmm, my SE with 16" alloys is dead on accurate, when compared to my Garmin Nuvi, maybe It's the 18" wheels?

And I've taken it all the way to the up to 193kph (119.9mph) and the speedo was reading 120mph.
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Hi, there should be a way of changing a setting in the ecu for a different size of wheel, but whether this affects the calibration of the speedo I don't know. If the wheels came fitted from the factory this should have been done, if they are fitted afterwards then this might need looking at, but only at a dealership, that's if they know about this and can do it.
Chris
 

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Hi, there should be a way of changing a setting in the ecu for a different size of wheel, but whether this affects the calibration of the speedo I don't know. If the wheels came fitted from the factory this should have been done, if they are fitted afterwards then this might need looking at, but only at a dealership, that's if they know about this and can do it.
Chris
i am about 1.2 to 1.3 % out on the slow side, thus when I get my winter tires I will take this into consideration and get slightly larger wheels. I have the same set up as you with the factory 18".
 

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Sonic Crew #016
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Mine reads 1 mile an hour faster then i really am going.
 

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So I got my MFT (my my ford touch, is that weird to say or what) updated to 2.11 and of course the tech forgot to recalibrate the screen. So both of us together had to figure it out, and of course I pulled up FF.com's thread on how to do it. Long story short we got it done but inside of that menu where the calibration setting is lies a whole bunch of cool stuff. Most notably is the GPS data which confirmed my suspicions that my speedo was off. See a few weeks ago I was on a road trip to a certain Fest of Foci located in KY and those that were following me complained of my excessive speed. I was only going 73 in a 70 but they kept falling back and were unwilling to risk a ticket to catch up. This infuriated me as no one will get a ticket for going slow as balls. I blamed their aftermarket wheels and junk messing up their speedometers. However once checking out this GPS data menu I noticed my speedometer was reading drastically low. Like 70 on my speedo was reading 75 on GPS. That could get someone who is going 73 in trouble, especially through the town of Macon, GA, which is known for charging speeders like eleventybillion dollars for tickets and which happened to be on my way home.

Anyways, has anybody else noticed theirs being off? I have a Titanium hatch with the handling package aka 235/40/18 setup.
Needless to say. a speedo should never read too slow.
A trip to the dealer is highly recommended.
 

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I've noticed mine is 2-3 mph slow. What's even more frustrating is that it's not consistent, and doesn't always match the digital readout when using cruise control. If I set the CC to 70 the needle should be on 70, which it is sometimes. But other times it says 69. Interestingly, according to my GPS it's actually the digital readout that's always right, not the needle. Very frustrating. So about 50% of the time 70 mph is actually 72 and other the other 50% it's 73, if I'm looking at the needle. But if I only look at the digital readout, 70 mph is always 72. Hope that made sense. LOL

Like you, I noticed a pattern of going faster (more so than usual) than other traffic before I got out the Garmin to confirm. My Escort 9500ix radar detector also agrees perfectly with the GPS.

I also have the Titanium. Do you have the handling package with PS3s?

Tony
 

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BodyKits=PantiesDrop
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Discussion Starter #9
I've noticed mine is 2-3 mph slow. What's even more frustrating is that it's not consistent, and doesn't always match the digital readout when using cruise control. If I set the CC to 70 the needle should be on 70, which it is sometimes. But other times it says 69. Interestingly, according to my GPS it's actually the digital readout that's always right, not the needle. Very frustrating. So about 50% of the time 70 mph is actually 72 and other the other 50% it's 73, if I'm looking at the needle. But if I only look at the digital readout, 70 mph is always 72. Hope that made sense. LOL

Like you, I noticed a pattern of going faster (more so than usual) than other traffic before I got out the Garmin to confirm. My Escort 9500ix radar detector also agrees perfectly with the GPS.

I also have the Titanium. Do you have the handling package with PS3s?

Tony
Sure do!

Now in that same calibration menu I noticed a whole heck of a lot of settings/descriptions that were wrong. Specifically I remember in the specifications menu that my car was listed as a Sedan (its a hatch), manual (its not), key tumbler ignition (its keyless), etc. No idea if any of those actually matter but interesting nonetheless.

I do agree that your speedo should never read slow. Most cars are actually calibrated the opposite way to keep you out of trouble..
 

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Sure do!

Now in that same calibration menu I noticed a whole heck of a lot of settings/descriptions that were wrong. Specifically I remember in the specifications menu that my car was listed as a Sedan (its a hatch), manual (its not), key tumbler ignition (its keyless), etc. No idea if any of those actually matter but interesting nonetheless.

I do agree that your speedo should never read slow. Most cars are actually calibrated the opposite way to keep you out of trouble..
I also remember there being quite a few discrepancies in the specs menu too.

I've NEVER had car with a slow speedo. Always a little fast or dead-on.

Tony
 

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BEWST AGAIN YAY!!!!!
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Evan, I would have them check the tire Rev's Per Mile in the ECM, I remember haveing to change that crap all the time on cars to get the speedo accurate.
 

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i am about 1.2 to 1.3 % out on the slow side, thus when I get my winter tires I will take this into consideration and get slightly larger wheels. I have the same set up as you with the factory 18".
Hi, yes I realise you can do this, however the setting must be there for a reason...
Chris
 
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