High Idle Control - 2001-2004 Chev Duramax LB7 1989-chevrolet-camaro-esi2684155 drums require more pressure to

drums require more pressure to compensate for return spring tension

The lower control arms also have reinforced spring perches and sway bar mounting points

Now that you have the PROFORM Valve Spring Tester you'll need a set of PROFORM Air Hold Adapters to remove your springs with the heads on the engine

reduced detonation and smoke

High Idle Control - 2001-2004 Chev Duramax LB7 1989-chevrolet-camaro-esi2684155 drums require more pressure toFor 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.