Why wouldn't you modify the oem cdv??...it takes literally 2 seconds with a screw driver to get rid of the reduction valve in there...then pop it back in. No way for any tech to tell if its been modified. Total time it takes to jack up the car, pop out the valve, modify it, then pop it back in, bleed the clutch...20 minutes.
Faster, faster, faster, until the thrill of speed overcomes the fear of death… – Hunter Thompson