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After you have submitted the form online, please send ECU to address listed below. Make sure to include all contact information and return address with your package. Please wrap and protect your ECU properly to avoid damage during transport. We will be in touch once we test/repair your ECU and will collect payment and return shipping options at that time. Please make sure to submit form before mailing your ECU. In the event that your ECU is non-repairable, we offer replacements when in stock.

Note: there is a 20% restocking fee for all returns.

Simon Performance Technology is not responsible for diagnosing running/motor issues. We diagnose and repair ECU’s only.