ZR-1 Net Registry Forums - View Single Post

65ZR1 · 07-13-2008

The secondary injector modules were used for all years. However, the 90 model had a seperate knock module that was later integrated with the ECM. When I had a custom harness made for my 94 LT5 to allow it to run in a 65 coupe the company eliminated the modules and used a relay. They said it would work fine. This appears to make sense since the modules seem to be just an on/off switch. The pulse of the secondary injector is still controlled by the primary injector ground circuit though the ECM. I wasnt confident enough to try this route since I thought the general must have used a more expensive module for some reason. I guess when we cant find any then someone will give it a shot!

07-13-2008	#4
65ZR1 Join Date: May 2006 Location: Canada Posts: 139	Re: Secondary relay module questions The secondary injector modules were used for all years. However, the 90 model had a seperate knock module that was later integrated with the ECM. When I had a custom harness made for my 94 LT5 to allow it to run in a 65 coupe the company eliminated the modules and used a relay. They said it would work fine. This appears to make sense since the modules seem to be just an on/off switch. The pulse of the secondary injector is still controlled by the primary injector ground circuit though the ECM. I wasnt confident enough to try this route since I thought the general must have used a more expensive module for some reason. I guess when we cant find any then someone will give it a shot!