Quote:
Originally Posted by JWillis72
Mark at Stillen told me to leave my cats on the car or I would be down HP. He would be the man to ask if it causes any other problems
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Thanks Jason.
Quote:
Originally Posted by edub370
So will i have issues going with the stillen sc kit if i have test pipes? even with the new tunes?
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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.