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SunSoaked · 06-16-2021, 10:39 AM

I had same issue bit I had my vacuum advance cannister off the HEI T-d into it. The diaphragm in the cannister went bad and raised my shift points like you.

06-16-2021, 10:39 AM	#6
SunSoaked Registered User Join Date: Dec 2011 Location: Yuma Arizona Posts: 1,525	Re: T400 help please I had same issue bit I had my vacuum advance cannister off the HEI T-d into it. The diaphragm in the cannister went bad and raised my shift points like you.