I'm trying to see if I'm on to something here. I have a e5 ecu running my red top with the red top cts. The e5 ecu is supposed to use the s14 style cts because of the difference in the plug but when you are just using the e5 ecu you obviously don't have to worry about the plug differences because your just using a different ecu. My afr are 11 to 11.7 during idle.
So red top cts + e5 ecu = rich?
E5 blacktop cts + e5 ecu= good?
There is obviously a difference in the shape..... How about the reading?
What do you have and what ate your afrs?
