Use this form to contact the Howell EFI Support staff. Please describe your issue as completely as possible using the form below. Ensure that your contact information is correct so a representative can respond to your issue. Please allow up to 48 hours for a response to be made.Phone: (810) 765-5100
Fax: (810) 765-1503
Howell Engine Developments, Inc.
6201 Industrial Way
Marine City, Michigan 48039