First off, I am certainly not an engineer...but what we do on our car certainly does work, as we keep getting faster with the car with each change that we make. It was told to me by an engineer that dumping the boost would create several problems...none of which have shown up. These same engineers would have me running 2 1/4 to 2 1/2" downpipes instead of the 3" that we run (we run 3" downpipes merging into 4" mandrel bent tubing all the way to the rear of the car).


When the throttle is closed, we want to dump the pressure in the intake tubing as quickly as possible to keep the turbos spinning...with a closed throttle, the pressure will back up in the intake side and greatly reduce the pinwheel speed of the impeller.

Our large TURBOXS H34 valves have a 1 3/8" opening to vent this pressure. We have basically zero lag with this system...and no, we don't belch out black smoke and we don't go rich on shifts and we have a smooth idle.

Let's just say...I like the noise...if nothing else.

Don