Originally Posted by bash bros

Yeah it's an awesome engine. They basically took a classic like the p5xlt and made it even better. I had mine out at the track for practice today in my mbx7t with 9853/41031 pipe combo and it ran like a champ. I'm really liking the conical header a lot more than the standard 41021 so far. Good controllable power all the way from the bottom to top end.

Also, once it's broken in take the copper shim out and replace it with a .10mm and it will really come to life. I did not think it would make that much of a difference but I was surprised. It's noticeably much more crisp on the low end.