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The RS-R EDC Warning Canceler removes the check engine light when you install aftermarket coilovers on your 2020+ Toyota Supra (A90). When coilovers are installed, the factory Electronic Damping Control is no longer retained since the adjustment is manual on each coilover. Simply plug this into each corner and your CEL will be removed.
If there is an issue with your order let us know. We have a satisfaction gurantee and keeping our customers happy is our first priotity.