1. I installed an air deflector plate that goes between the air box and the radiator air stream. The plate will keep the direct hot air off of the cold air box. The plate has fluted edges on the bottom side which should push the air to the outside and take advantage of the hood openings, in addition, the hot air will be deflected away from the engine.

2. When I insulated the air box the passenger side valve cover breather attachment to the box was capped. The breather on the drivers side valve cover is 1/2 of the PCV system. In theory the the breather supplies filtered air from the air box to the crankcase. The problem with this scheme on most cars is that at WOT the PCV valve (passenger side) does not always have the capacity to vent the crankcase, in affect, the breather (drivers side) now becomes a second vent (not breather) and the oil vapor from the crankcase can be ingested by the engine thru the air box.

Secondly, the rerouting was also done to keep the hot crankcase air from heating up the air box and IAT sensor when the engine was shut off. The pictures below shows the breather hose being rerouted to a mini-catch can mounted on the engine side of the wheel well liner.


Catch Can - Valve Cover Breather G5.jpgRadiator Deflector Plate-Bold Air Box G5.jpgRadiator Deflectror Plate G5.jpgValve Cover Breather ReRoute G5.jpg