Originally Posted by Team_STILLEN

Thanks Jason.



You will not have issues with the Supercharger if you have test pipes. We have a lot of customers who have decided to use test pipes or been sold on them from their shop. Because of the way the valve overlap works on the VQ37 you lose some of the boost in the cylinders without the back pressure of the cats. Yes, the test pipes flow better, but because you have less boost in your cylinders, you make less power.