General B58 performance tune

[FlyingTexan]

Any update on the mileage or performance over the last two months? Did you buy it direct from the UK? How was shipping?

I've been very happy with it. I broke my first one, my fault with how I installed it, so the second one I just used gasket head glue that's good to like 750F to put it right on the plastic cover. So far it's been running like a champ. With the much larger tires it really helps a lot. My mpg sucks but that's because of the tires. I get 12-13mpg with Nokian 285/75R17s but then again I don't baby it. I also put a brush guard on it. 100% worth it to me. I know people are worried about warranty so I won't speak to whether you should do it or not. But I'm also running Red Line 5w30 now and it purrrrrs. Idle and everything is much better.