Quote Originally Posted by Reptile View Post
Well Rick....I ASSumed that they were 42.5. I know that they run on different fuel pressure than ours from what I've read before I got mine. This might be worth digging into a little more.
The green Lightnings are definitley 42's and is reflected in my IFR table. I thought the Cobra ones were 39 as well.

edit: Rick I just looked at your IFR table and it is tuned for 39# injectors.