I'm surprised that no one with twin turbos has jumped into this discussion. FWIW, the twin turbos require the movement of the alternator from down near the bottom on the engine to up onto the passenger side valve cover near the rear of the car (front of the engine). In turn, this means that the connection from the bottom of the air box to the pontoon is not longer used because the alternator is now in the way. So what? Well, now you are pulling hot air into the airbox right off the exhaust manifold. Hot air expands and, thus, it is thinner and you have less oxygen per cubic foot. Here, a "cold air intake" makes real sense. My air box, a modification of Ron Wester's design, pulls it's air through a 3" tube that ends inside the pontoon where it is fitted into a large K&N "off road" conical filter. No, I've not done any dyno tests. I'm not selling anything so if it pleases me, why pay for a dyno test. However, common sense tells me that, in the case of the twin turbo set-ups, this has to be a better input device than I previously had. Dick Ryan VIN 16867 __________________________________ Do you Yahoo!? Meet the all-new My Yahoo! - Try it today! http://my.yahoo.com To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/dmcnews/ <*> To unsubscribe from this group, send an email to: dmcnews-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/