Controlling your 2015 Mustang’s Super 8.8 with diff bushing inserts
By Steve Turner
Photos by Steve Turner and courtesy of Steeda Autosports
Sure the factory Independent Rear Suspension under the latest Mustangs raised the bar for pony car handling. However, as we now know, the things that make it livable for everyday drivers allow many of the subassemblies to move. Moving means that geometries change, and bad things can happen when your Mustang is driven in anger; bad things like wheel hop and loss of traction.
One of the major contributors of wheel hop and lost traction is differential movement. The stock rubber bushings that isolate the differential from the cradle are not only rubber, but they are peppered with voids that provide additional give. Sure, they do a great job keeping things quiet, but when you decide to use that Launch Control, things start to move.
You could cut out the stock bushings and replace them with more rugged replacements, but that’s a lot of work, and you are sure to introduce some additional noise, vibration, and harshness into the picture. That’s why Steeda Autosports developed its S550 Mustang Adjustable Differential Bushing Insert System. This bolt-on solution bolsters the factory bushings with urethane (PN 555-4439; $99.95) or aluminum (PN 555-4440; $94.95) inserts that reduce differential movement.
We told you about this system when it was released and we recently had the opportunity to visit the Steeda campus in Pompano Beach, Florida, to watch technician Steve Chichisola install the system on the company’s in-house EcoBoost Mustang.