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I wanted to thank you all for your amazing product. I purchased a Quick 4 for my built GM 4L80E in January of 2017. I finally finished my truck. The shifts are perfect. Could not ask for a better product. The use of a Laptop makes the shift points even better. Thanks again.

  • 1963 Chevrolet C-10
  • 350 Small Block
  • GM 4L80E

Brian J.
California

My 2005 Mustang GT has had several different combinations through the years. Originally equipped with a 4.6L 3-valve and 5R55 automatic transmission, I added a Procharger along with a few other bolt-ons. At one point, the car was fitted with a 5.4 3V, twin turbos, and a TR6060 6 speed manual transmission. It was fun to drive, but a change of address made operating a clutch tiresome in traffic.

In 2013, I went back to an automatic. Needing a transmission with overdrive and good strength, I chose the 4R70W. The transmission came with an early US Shift controller, which I updated to the Quick 4.

This was my first experience with US Shift. The Quick 4 was very easy to install and program. The transmission used a constant pressure valve-body, so I was unable to take full advantage of the Quick 4's adjust-ability. However, due to its flexibility, I was still able to create a calibration that offered good drivability.

Wanting more out of my combination, I started looking at ways to make it more efficient. The first order of business was a new 5.4 4V with smaller, better matched turbos. Seeing the success of the 6R80 behind the Coyote engine, I knew that was the way I wanted to go.

I contacted US Shift to see if anything was in the works and they were in the middle of Quick 6 development. I stayed in regular contact with Jake, and one day the Quick 6 became a reality. I was offered a Beta Tester slot and I jumped at the opportunity. This turned out to be a great experience. There were a couple of hiccups at first, but Karl was right there to work through it. Once we got the initial settings worked out, I began adjusting the tune. This time, I was able to take full advantage of the Quick 6 software (no constant-pressure valve-body). It was very easy to navigate and any questions I had were immediately answered. I spent a lot of time perfecting the programming to my liking.

The end result is a vehicle that drives like stock around town with better gas mileage than the 4R70W it replaced (22-23 mpg highway). Every time I drive the car, it puts a smile on my face. This is the best combo my car has ever had. I can't say enough about the US Shift team either. Great service, Great products and Great support!! I loved both my Quick 4 and Quick 6 controllers and recommend them every time someone asks!

Mike I.
Tyler, Texas

After purchasing one of the early Quick 6 controllers for this project, there were naturally some improvements needed along the way. Karl and the US Shift team have been extremely helpful, sometimes exchanging emails on the weekends. My truck now shifts as well as any stock vehicle and I'm able to adjust everything very easily with their software. I highly recommend this controller for any 6R80 application. It is easy to use and the shift learning while driving works great. Thanks again to the US Shift team for a great product.

  • 1971 Ford F100 4x4
  • 2013 3.5L Eco-Boost
  • 2013 6R80

Steve W.
Southern California

Why I chose Quick 6 and the 6R80 for my Mustang:

The 6R80 was available as original equipment in this platform (S197). The installation was easy with no modification to the transmission tunnel or chassis. There are no holes to drill or brackets to make. The 6R80 is strong in stock form and will allow me to add horsepower and not worry about the transmission's durability. The gear ratios are close and torque converter can be locked at WOT.

The Quick 6 easily controls the converter clutch and integrates well with the OEM speedometer and cruise control. With Quick 6, I have gentle shifts at light throttle around town and in traffic. At the track and at WOT, the shifts are firm and quick. I drive my car to the track, race it, and drive it home with the a/c on getting nearly 20 mpg while cruising at 70 mph at under 2000 rpm. You can't do that with other transmissions. My elapsed times are now more consistent and my 1/8 mile times have dropped.

The Quick 6 is an incredible piece of engineering. Multiple shift calibrations are included with the software, which makes for easy-to-understand starting points. Shift feel and shift points are easily adjustable with a laptop connected to the Quick 6 controller. Customer support has been great and forthcoming with any information that I have needed for my install and operation.

  • 2006 Mustang (Originally equipped with a TR3650 manual transmission and 3.55 rear gears).
  • Stock Long Block 4.6 3-valve.
  • Roush Supercharger (~450 Rear-Wheel HP).
  • Suspension modifications to help at the drag strip, but keep car road-worthy and pleasant to drive on the street.
  • Stock 6R80 and torque converter from 2013 Mustang GT.
  • 3.31 Gears with Eaton TruTrac.

Mark J.
New York

After a catastrophic failure in 2010, it was time for an engine/transmission upgrade in my 1970 Mustang.

I built a 347 stroker and bought a new 4R70W automatic. At the time, I went with the US Shift Quick 1 as the control device and ordered the items early in the spring of 2011. With great service from the team at US Shift, I got the correct items and started the installation.

I have loved this solution with the ability to adjust or check settings directly on the transmission controller. I use, among other things, the temperature display on the built-in screen during demanding conditions where heat can cause problems.

The ability to make big changes with the PC on the layout is fantastic. Should you like a change on your shift timing, and aren't sure what to do, you will get a good overview in the provided software.

In 2014, I upgraded from a carburetor to the Holley Terminator EFI on my engine. I had to change my TPS sensor to the US Shift TPSKIT1 to work with this Setup. It was simple and straightforward with a few minor adjustments to the existing calibration.

I'm now waiting for my new upgrade to the US Shift Quick4 to be shipped to Norway!

Terje A.
Norway

Works beautifully. My tech in charge of tuning dialed her in with his laptop and was very impressed with the controller. The compact size was a great fit under the dash since these vehicles have limited space. Our customer is very happy with the transmission's performance and the Bronco runs great. Nice product!!

Brandon S.
Velocity Restorations
Pensacola, Florida

I purchased a Quick 4 transmission controller to replace the [competitor's] controller in my 1970 Chevelle. I had been running the [competitor's] unit for several years and it worked OK, but was a royal pain to program and did not offer multiple tables like the Quick 4 does. My wife was not fond of riding in my Chevelle because it shifted so hard, which was what I wanted. The Quick 4 allows me to have a shifting profile for the wife, one for me, and an additional two to use for whatever. With the flip of a switch or the turn of a knob, I can switch between the tables and please my wife or myself.

My Chevelle is set up with a ZZ 502 and a 4L80E transmission. With the new controller, the whole car acts differently. Shifts better and MUCH easier to play around with the shift points, etc. than my old [competitor's] unit. Also tech support has been excellent! These guys know what they are doing! Best controller on the market today!

David H.
Centennial, Colorado

I wanted to let you know the controller went into that truck and has completely resolved the drivability issues we were having. It really changed the way the truck runs! Thanks for your help with the details. We have another one of these trucks in the pipeline so we may need another one in a few weeks. Again thanks for all the help and the super product!!!!

Mike C.

I spent half of my home leave doing an EFI 5.0 HO and 4R70W swap in my '72 Ranger. It was well worth the time and out of the modern O/D trans and EFI, the trans with your controller is my favorite. Nothing better than the lower 1'st gear and being able to run 80 mph down the interstate at 2100 rpm in a 44 year old truck. I'm more than pleased with the Quick 1, but can't wait to get the Quick 4 when I can. I can't wrap my brain around how other guys manage to sell their TCUs at such high prices when yours gets the same job done for HALF the price of the others I looked at. Not to mention the Ford trans support which other companies seem to care little about. Keep up the outstanding work and thanks for a great, cost-effective product.

Chris W.

Have your own story to share? Send an email to support@usshift.com with a picture of your vehicle attached and we might feature it here!