I got my set of RC Engineering 1200s yesterday, and I finally got a chance to compare them to the old injectors. The noses of the RCs are a tiny bit shorter than the old ones, and are a bit wider as well. Do I need to swap caps on them? Or get other pintle caps for them? As wide as the opening is on the RCs I can't see them possibly using one since it seems like it would totally screw the spray pattern, but I wanted to check before I put them on.

 

Call up RC Engineering, they'll be able to answer you more quickly. I've got my first set of aftermarket injectors I'm going to be putting in and have the same question. I'm simply going to ask the company that I have clean my OEM primaries.