840whp Turbo VR6 VW Corrado Screaming On The Dyno With K.P. Tuning Acceleration & Sound Drag & Track by turboandstance - July 1, 2020 Holley EFI on a VR6 Turbocharged VW Corrado? Sign K.P. Tuning up, it's time to make some jam! Unfortunately, the engine developed a valve train sound near the end of the tuning session. Some diagnosing found a beat down valve tip and .050 valve lash, along with a cracked intake