• Mustang Forums
  • 2005 - 2014 S-197 Mustang -General/Talk-

X3 tuner question???

  • Thread starter Thread starter 053vstang
  • Start date Start date Jul 7, 2010

053vstang

Member
Feb 16, 2010
39
0
6
Detroit
Jul 7, 2010
#1
  • Jul 7, 2010
  • #1
This probally falls under the Noob category, but I just got my tuner and I have never used one, so bare with me!

Ok, I bought a used X3 tuner. Its unlocked. It has some custom tunes for a different strategy than my PCM has. I'm not worried about the tunes and dont plan on using them. I will contact AM when Im ready for my own custom tunes, I just dont have the cash for it right now.

Can I change my tire size with this tuner even thought its currently set up for a different strategy? Can I do this? Does the strategy affect the user adjustable parameters? Or will I have to have the new tire size incorporated with a new tune?

Thanks guys.
 

jay07

Member
Aug 3, 2006
81
2
9
Jul 8, 2010
#2
  • Jul 8, 2010
  • #2
Actually, I have almost the exact same question, I'm going form 235/50R18 to 255/45R18 and I want to do the same thing with my X3. I have the revolutions per mile number, and I THOUGHT there was a way to do this with the X3, but when I plugged it in the other night I couldn't find a way to do it.

053vstang said:
This probally falls under the Noob category, but I just got my tuner and I have never used one, so bare with me!

Ok, I bought a used X3 tuner. Its unlocked. It has some custom tunes for a different strategy than my PCM has. I'm not worried about the tunes and dont plan on using them. I will contact AM when Im ready for my own custom tunes, I just dont have the cash for it right now.

Can I change my tire size with this tuner even thought its currently set up for a different strategy? Can I do this? Does the strategy affect the user adjustable parameters? Or will I have to have the new tire size incorporated with a new tune?

Thanks guys.
Click to expand...
 

053vstang

Member
Feb 16, 2010
39
0
6
Detroit
Jul 8, 2010
#3
  • Jul 8, 2010
  • #3
I'm going from the 17inch 235's to some 255-45-18's up front and 285-40-18's out back. I was gonna try and recalibrate the speedo with the X3. But I dont think we can do it without actually tuning the car.

I think I'm just gonna put the wheels and tires on and worry about the recalibration when I get my tune for the other goodies I have waiting to go on. Its only a tire swap, its not like I put a 4:10 in the car and have the speedo way off.
 

Mustanglvr2006

New Member
Mar 31, 2010
340
0
0
Somewhere
Jul 8, 2010
#4
  • Jul 8, 2010
  • #4
SCT Website says for the X3

User Adjustable Features:
• WOT Fuel Adjustment • Idle RPM
• Spark Adjustment • Transmission Shift Points
• Axle Ratio • Fuel Injector Size
• Tire Size - Rev / Mile • Air Intake Selection
• Cooling Fan Temps • Traction Control On / Off
• Rev / Speed Limiters • Two StepOn / Off RPM
* Not all adjustments available on all vehicles

You can browse around their Site, if you have Adobe or something that opens PDF you can download the User Manual, that might be of some help

Best of luck
SCT Automotive Performance Products
 
You must log in or register to reply here.

Similar threads

B
2005 gt V8 bama tuner
  • Black Heart
  • Jul 19, 2025
  • 2005 - 2014 S-197 Mustang -General/Talk-
Replies
0
Views
141
2005 - 2014 S-197 Mustang -General/Talk- Jul 19, 2025
Black Heart
B
E
Nightmare after tune install!
  • EnemyofTyranny
  • Mar 29, 2025
  • 2005 - 2014 S-197 Mustang -General/Talk-
Replies
1
Views
407
2005 - 2014 S-197 Mustang -General/Talk- Apr 12, 2025
89ripper
Tuners come on inside
  • squeak93
  • Feb 13, 2026
  • SVT Tech Forum
Replies
1
Views
216
SVT Tech Forum Feb 20, 2026
squeak93
J
Switched to e85 on the 3v and now it won't run right.
  • jcowdough
  • Aug 24, 2025
  • 2005 - 2014 S-197 Mustang -General/Talk-
Replies
1
Views
137
2005 - 2014 S-197 Mustang -General/Talk- Aug 24, 2025
Noobz347
D
66 Coupe Progress Thread
  • DTCRAWLEY
  • Apr 19, 2026
  • 1965 - 1973 Classic Mustangs -General/Talk-
  • 2 3
Replies
40
Views
727
1965 - 1973 Classic Mustangs -General/Talk- Thursday at 8:32 PM
General karthief
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 2005 - 2014 S-197 Mustang -General/Talk-
Menu
Log in

Register

  • Forums
  • What's new
  • Media
  • Resources
  • Contact
  • Sponsor
X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?

X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?