Are the 92-95 Civic Si injectors the same size as the 94-up GSR's? I've been hearing conflicting info regarding this. A few peeps have said that they are the exact same thing, while others say they are not? Who can settle this once and for all for me?

 

They are identical, 240cc

 

This is a stupid question, but are B series and D series injectors interchangeable??

 

Yes, they are...I have a friend with a stock DX running GSR injectors...and it works other way around too. My B18C is running 92-95 single cam Si injectors...

 

yes, just make sure you use the proper impedance, and the 96+ injectors will require OBD2 plugs. However, they are high impendance units like the 92-5, just with different plugs.