High Idle Control - 2001-2004 Chev Duramax LB7 1989-chevrolet-camaro-esi2684155 It directs the nitrous outside

It directs the nitrous outside of the vehicle in the case of an over-pressurization event

reduced detonation and smoke

This kit has been granted CARB EO # D-698-7 and is 50-state legal for use on listed applications

drums require more pressure to compensate for return spring tension

High Idle Control - 2001-2004 Chev Duramax LB7 1989-chevrolet-camaro-esi2684155 It directs the nitrous outsideFor when days are short and the nights are cold, you want your engine to heat up quicker. When you are using a PTO, or constantly idling , these are the times, when you need an elevated idle. BD's High Idle kits are easy to install and in most cases adjustable.