The Savage Fab BOV kits are designed for those wanting to install a blow off valve to protect their turbocharger from surge when letting off the throttle. That "cha cha cha" that is heard when coming off a hard pull is the air charge peaking and changing directions and exiting out the compressor wheel. It does sound wicked but it is extremely hard on the thrust plate and turbine shaft of your turbocharger. Most of the turbos that I rebuild have failed either from thrust bearing failure or shaft failure. By adding a blow off valve that opens when the charge air pressure spikes this reverse in flow direction and impact on the turbocharger is negated allowing your turbo to live much longer and take even more abuse. There are several options for these kits that will be listed below. A wiring harness kit that comes with the high pressure switching valve, micro switch, boost lines, and the micro switch bracket. Then a kit with a 50mm bov made by on three performance, the wiring kit, a new charge pipe that goes between the intercooler and intake horn. And a kit that comes with a new intake horn, on three performance 50mm bov. And all of the parts in the wiring kit. If ordering the kit with the intake horn please message me for lead times. if you have any questions please feel free to email me. Thank you!