Indeed, the installation work is very good. the negatives come from... 1. The lack of accompanying mods making this car somewhat dangerous on the road 2. The remote mounting of the turbo providing quite poor lag characteristics (though quite difficult to avoided in a ZZ engine turbo setup with a large turbo) 3. A short jab my me looking for a rise because he's not using the full 8,000 RPM yet :P i havn't seen any comments knocking CES's work..quite the opposite, and we cant forget that CES only did what the customer wanted and you cant fault them for it....