Could be stc fitting, branch tube(super unlikely) or a pump seal on the early models with the round pump. I've seen that a few times now. IPR port test or bust. You're wasting time any other way. Good tips, comment is for the readers if it's not the stc fitting. I like my stock filter! I've learned how to do it pretty easy now, after a bit of practice! 😂
General consensus says 10 pounds loss equals 1 hp gain. So, if that tube was 1 pound, you’ve gained 1/10th of a hp. 👍👍 Let’s see the new track times. 🏁🏆🏁 😂