olderthandirt
Registered User
I have a problem with my 89 S/C I changed out the DIS( new Standard Motor) unit because I was having had start issues.(slow turn-over like a timing issue on SB Ford)What I got was better start and poorer performance . I had thought the opposite would happen with better spark control. Went back to old one and hard start better performance. I have been all over vacuum system no leaks so that is not it.Are the old stock DIS units better?