its obviouse they build some great stuff, and have been invloved with E85 for a long time. But i still have my questions about them, my good friend is dating one of the dude's sister, has been for 3 years, and he did a little d series hmt setup on my friends crx for him. And insisted that he did not need a restricter valve, he has blown the seals out of 3 turbo's, and the guy from english racing told him that i am crazy, and he doesn't even know what a restricter valve is and that i am full of it. hmm.
I think they know a lot about DSM's though..