I have both the mtntk and a BD. The BD makes more poem hp but I also have it setup in 10 psi and mtntk on 7-8. Hands down my self and everyone in my group said mtntk over the BD. The mtntk is spoils fast and is pull and go. 60 days and zero issues not a wrench put to it. I wanted to trade with a silber to compare last 2 opertunites I had both silber sleds wouldn’t run right so wasn’t with it. (Not saying it the kit) For the price of mtntk you can’t beat it. Axys turbo good and you can’t go wrong with Mtntk BD or silber. Silber comes with a cheep turbo though (kpa) any other kit like redline doesn’t comparison your paying the same and not getting half the product. Other thing is with mtntk Chris has installed 60 plus and knows them in and out and you won’t find a better shop to deal with and not push **** you don’t need down your throuat.