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post #1 of 3 (permalink) Old 06-09-2014 Thread Starter
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Previous Owner Mods

Hi Guys,
Im new to this forum but not new to Mustangs. I recently purchased a 2012 GT/CS and I am trying to figure out the modifications the previous owner had made. (Looking to purchase the SCT x4 tuner) I know he did Roush Axle backs, Steeda CAI, JLT oil separator. The mid pipe is an X-pipe but I thought 2012 GTs had stock H-Pipes but the material itself matches perfect with the stock manifolds, I also dont see any markings on it. The gear ratio seems to have been changed also or maybe he purchased 3:73s from factory. These are the questions I'am trying to answer having gotten no where trying to track the guy down.

I dont know if this will work but could I purchase a Tuner (never purchased or tuned my car before) tune With the mods I know for sure have been modified/log the data and have BAMA check it out? I know if the gear ratio is off in the tune the speedometer will be way off, wondering if it would tell me anything else.

Any information would be helpful.

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post #2 of 3 (permalink) Old 06-09-2014
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If the differential still has a sticker on the housing it should say what the factory gearing was. On mine it says 3.73.


2018 GT350 - Race red

2012 Mustang GT/CS - Race red - Electronics package - Security package - 3.73 - Steeda shift knob - Steeda shift bracket - ProCal II Tune - GT500 ABs - Shaftmasters DS - Boss 302S Wheels - Build date: February 14th, 2012

2011 Mustang V6 - Pony Package Premium Coupe - Black - Charcoal Leather - Roush Front Fascia - Matte Black Lemans and Hockey Stick Hood Stripes - 6% HP Charcoal Tint - 3.31
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post #3 of 3 (permalink) Old 06-10-2014
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Quote:
Originally Posted by selfmade41 View Post
Hi Guys,
Im new to this forum but not new to Mustangs. I recently purchased a 2012 GT/CS and I am trying to figure out the modifications the previous owner had made. (Looking to purchase the SCT x4 tuner) I know he did Roush Axle backs, Steeda CAI, JLT oil separator. The mid pipe is an X-pipe but I thought 2012 GTs had stock H-Pipes but the material itself matches perfect with the stock manifolds, I also dont see any markings on it. The gear ratio seems to have been changed also or maybe he purchased 3:73s from factory. These are the questions I'am trying to answer having gotten no where trying to track the guy down.

I dont know if this will work but could I purchase a Tuner (never purchased or tuned my car before) tune With the mods I know for sure have been modified/log the data and have BAMA check it out? I know if the gear ratio is off in the tune the speedometer will be way off, wondering if it would tell me anything else.

Any information would be helpful.
Selfmade31,

Welcome! That's a pretty good question and the majority of the parts that you would want to be concerned about would be right on the surface in plain site such as the CAI, Throttle Body, Long Tubes + Mid Pipe. Regarding the gears as matthewr87 had said this will have a marking indicating what ring and pinion (Gears) are there. I'm confident that there's definitely a tune on there as you're saying it feels like it. If you're to have an SF4 picked up we can definitely datalog it to correct the speedo with the appropriate axle ratio as well as the current tire size etc.

If you would like to shoot a Bama Tuner a call directly at 888.226.9764 they'll get you squared away!

-Alex

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