SwitchSpeed with an ENDO-CVT
After discovering how seamless it was to connect the AccuAir ENDO-CT to the Air Lift 3P/3H system in our last blog post, we decided to take it a step further and test the combination of the ENDO-CVT and an AccuAir SwitchSpeed system. AccuAir’s ENDO-CVT instruction manual explains how to repin the e-Level harness but doesn’t mention anything about the SwitchSpeed, so we wanted to see if possible! Our Marketing Director, Zach Wilson, volunteered to upgrade his Lexus LS400's SwitchSpeed management for this test. The following article will touch on parts of the installation, our results, and some recommendations.
Installation
To save on trunk space, Wilson decided to mount the tank on the upper deck of his trunk. While the CVT has adjustable mounting feet, you cannot mount this tank upside down because of how the compressor is situated inside the tank. The CVT needs to be installed right side up for the compressor's vibration isolators to work correctly and prevent damage to the compressor itself. Since Wilson wanted his system installed in this orientation, he needed to move the mounting feet to the tank's backside. AccuAir includes an Allen wrench for this process, but 2 of the six Allen bolt heads were stripped during the mounting feet, forcing Wilson to use vice grips to loosen the bolts from the tank. We noticed that AccuAir used red Loctite on these bolts, designed for permanent use upon further inspection. We reached out to AccuAir about their use of red Loctite on these bolts, and they said they are now using blue Loctite instead of red, so it shouldn't be something that customers experience in the future. AccuAir promptly sent replacement bolts and recommended that if anyone were to run into this same issue (which shouldn't be expected), use some heat and vice grip pliers to remove the bolts as a last resort. Be aware that using vice grips will mar the hex bolt heads, so be ready to replace those. Also another thing to note, Wilson wound up taping his tank with painter's tape to prevent any accidental scratching when removing the bolts with vice grips. Hence, if you find yourself in this situation, protect your investment!
The wiring for the ENDO-CVT is not something a first-time modder should attempt unless you have previous experience with wiring. AccuAir provides instructions on setting up the wiring for the ENDO-CVT with an e-Level TouchPad System (which includes repinning of wires inside of connectors). Still, they don't mention anything about wiring up this tank with a SwitchSpeed system. Regardless of who is installing your control system, we recommend reading through the manual thoroughly before beginning.
Repinning
The ENDO-CVT requires an Accuair adapter harness to operate the valves. Fortunately, the adapter harness plug connects to the SwitchSpeed harness without issues, so no extra wiring is needed. The most tricky part of this install was repinning the SwitchSpeed main harness. After looking at AccuAir's included e-Level repinning diagram, we noticed that the wires from the CVT corresponded with different locations on the main system harness. Luckily they all use the same colored wires for the same functions, so it was easy as matching the colors between the tackles. Take a look at AccuAir’s e-Level repinning diagram below to understand what needs to happen. In short, you make four changes:
- Remove the red pressure sensor wire from the SwitchSpeed harness (you no longer need this)
- Remove the black pressure sensor wire from the SwitchSpeed harness. You no longer need this)
- Remove the yellow compressor trigger wire from the SwitchSpeed harness and replace it with the Analog Harness yellow wire.
- Remove the green compressor trigger wire from the SwitchSpeed harness and replace it with the Analog Harness green wire.
Repinning is pretty straightforward as well. A small tab holds the pins in the middle, and once you unlock the account, the hook slides right out! AccuAir demonstrates it with a tiny flathead screwdriver, but we found a regular pick to be just as helpful.
Pairing
Once the installation was done, everything worked as expected. The SwitchSpeed system paired with the ENDO-CVT (or ENDO-VT) provides you the ultimate ability to adjust airflow to get the perfect air-up and air-down speeds. Although SwitchSpeed includes a variable valve control feature that flutters the valves open and closed to adjust the airflow rate, it is not a substitute for the function of standard flow control valves. This feature allows you to adjust the OVERALL rate of speed at which your vehicle moves, and when paired with the ENDO-CVT, you're also able to change the flow rate for each corner of your car through the built-in flow controls on the tank. This is a great setup that we highly recommend to those who want to pair it with SwitchSpeed.
Harness
Shortly after Wilson had finished installing his ENDO system, AVS (who manufacturers air ride components and accessories) released their harness to extend the SwitchSpeed/level ECU to valves extension harness. You might find it useful for remotely mounting the ECU.
A special thanks go to @aleccoutinho for the photos!
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Questions?
Have more questions? Don't hesitate to call us at 844-404-7344 or email sales@bagriders.com!
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