I believe there are belt-drive turbochargers as well as exhaust drive. Intercooler is key to performance, as heat generated in compression robs the power benefit of the compressed air. Am I wrong there? Pete --- Martin Gutkowski <webmaster@xxxx> wrote: > The DMC Houston engine has been tuned and set up to > work as a normally > aspirated engine. The Island Twin Turbo is a bolt-on > kit to start with, > and the Houston engine is NOT DESIGNED FOR IT. > > Any turbo is driven off the exhaust, and actually > the Island kit puts > them exactly where they should be - right on the > manifolds. > [moderator snip]