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2005-2014 Mustang Frequently Asked Questions

Written By: Glenn Cope II

Here are the most common FAQs regarding the 2005-2014 Mustangs. Driveshafts, cold air intakes warranties, and tunes are hot topics that are covered in this article.

American Muscle

Common Questions:

  • Should I replace my stock driveshaft?
  • Do no-tune required cold air intakes work?
  • Are hot air and heat soak an issue for cold air intakes?
  • Are computer tuning and tuners worth it?
  • Do aftermarket parts void your OEM warranty?
  • What are the flat spots and indentations on the OEM exhaust?
  • Does the V6 Mustang use adaptive timing control?

Is Putting an Aftermarket Driveshaft on My 2005-2014 Mustang a Good Idea?

With the 2005 Mustang redesign, Ford changed from the previous one piece driveshaft with a slip spline yoke in the transmission, to a two piece shaft with flanges mounted on both the axle and transmission. The GT and GT500 use a similar driveshaft which is comprised of two short shafts with a carrier support bearing in the center, one u-joint at the front, and CV joints on either end of the rear shaft. On the V6, the two piece shaft has no center bearing. Instead, the two pieces slide together in the center to provide axle articulation, and it has u-joints on each end.

Of the two designs the V6 driveshaft is the weakest unit by far and is the reason why Ford has such a low speed limiter setting for the V6 cars. There have been a number of failures caused by over-stressed OEM drive shafts. The GT and GT500 shafts are actually quite strong and capable of high sustained speeds. However, they're heavy. In the 2013 GT500 this has been addressed by utilizing carbon fiber, making the driveshaft suitable for the 200 MPH speeds the GT500 is capable of.

If you have a 2005 v6 Mustang, you're definitely going to want to replace your driveshaft with a stronger, lighter model. For GT and GT500 owners, a replacement driveshaft is going to reduce weight and vibration while helping the car rev smoother and faster. Many manufacturers offer aluminum replacement drive shafts to replace the weak and heavy OEM parts.

2011-2014 Mustang One Piece Aluminum Driveshaft
One Piece Aluminum Driveshaft

Do No Tune Required Cold Air Intakes for Mustangs Work? 

Yes. While the peak horsepower numbers may not rise a lot with their use, the power and torque numbers along the power curve generally rise significantly.

However, if you plan for future mods or are looking for the most from your CAI(cold air intake), you are going to definitely want to pick up a tuner or purchase a tuner/CAI combo pack.

Is Hot Air and Heat Soak Really an Issue for Cold Air Intakes?

This has been a long time question, ever since Mustang CAIs first started showing up on the market. These two issues are really only prevalent at idle so they have little effect on power production. Once the RPM and speed start to climb and the air starts to really flow through the CAI, all those increased temps are left behind. Aftermarket manufacturers offer a variety of Mustang cold air intakes to suit your needs.

2005-2009 Mustang GT with Cold Air Intake
Cold Air Intake Installed

Are Aftermarket Mustang Computer Tuning & Tuners Worth It?

Absolutely! The OEM tunes are very conservative and definitely leave a lot to be improved upon. Automatic equipped Mustangs reap even more benefit from tuning as the computer controls transmission functions.

Do Aftermarket Parts Void Your OEM Warranty?

The quick answer is maybe. An aftermarket part only voids the warranty if it can be proved that the part directly caused a problem you are looking to get fixed. So, if you replace your exhaust and the driveshaft breaks you are still covered, but if the hangers for your new exhaust break or bend from install, you will not be covered. If you are concerned about an aftermarket part or tune voiding your warranty, the best resource for accurate information can be found by calling your local Ford dealership and simply asking.

2011-2014 Mustang Flash Tuner

What are the Flat Spots and Indentations on the Mustang's OEM Exhaust? 

The stock exhaust system has areas in it that have been flattened. These flat spots are there for the machinery to clamp onto during production and can inhibit airflow, robbing you of power and performance. Replacing your Mustang’s OEM exhaust with an aftermarket exhaust will greatly increase airflow and net you big power gains.

2013 Boss Mustang Cat-Back Exhaust
Boss Mustang Cat-Back Exhaust

Does the V6 Mustang Use Adaptive Timing Control?  

Both the current V6 Mustang and the GT Mustang use adaptive timing control. This advances the timing until the knock sensors hear pinging at which point the timing is retarded slightly. What this means is that using a higher octane fuel allows the engine to make more power without added wear to the motor.

2005 V6 Mustang with a Y-Pipe
Fitment includes: 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, GT, V6, ShelbyGT500, Bullitt, Boss