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Contact SEP

Write us an e-mail or give us a call. 

We are best reached via email due to time zone differences, all emails are responded usually within 48 hours (M-F). 

If you would like to speak to an SEP team member on the phone, please send an email with subject line: "SEP Phone Inquiry". Please include your name, your phone number and build details - fitment needed, fuel you are using, and horsepower goal.

During designated shop time, we will be able to return your message with a phone call using the info you supplied via email. 

Our Tech Page and E-book are available as well for overall build/tuning questions. 


Phone 10:30-2:00pm Monday-Thursday (Hawaiian Aleutian Time): (808) 262-5928 Hawaiian Aleutian Time= -6 hrs EST; -3hrs PST

Due to HIGH call volume we highly encourage to write us an e-mail or send us a message on social media. 

We are physically located in Kapa'a Industrial park: 905 Kalanianaole hwy #3103, Kailua, 96734

The shop is not open on the weekends.