If your going to replace some I would do them all.It is a big job to replace them and if you have to do it over it is a lot of work.
Let me know if you need any help I can send you step by step instructions.
Darryl
Thanks Darryl, I thought I should replace them all. I have a good thread with pix. to follow but more info is always good. I would like to access your instructions.
You can use a TechII or EFILive to see which injecors have bad balance rates. This will give you SOME information. But as already stated, it's worth just replacing them all when you're in there already.