Quote:
Originally Posted by zoth
By the way @ KraftWerks, what is your opinion about some of the guys in here that are saying that we need a check valve for the intake manifold. I was hoping you guys can give us a solid answer to put the issue to bed. Thanks in advance. |
The solid answer is that the factory check valve does leak .....but it doesn't leak enough to affect performance
At KW we tested the check valve and it leaks ever so slightly at approx 7psi but the amount of air that leaks through is roughly the same at 7psi all the way up to 90psi.
We tested the KW kit with both the factory check valve and a heavy duty check valve and there was no difference in performance/horsepower
The are those that freak out over the idea of having a 'boost leak' but the reality is that the leak has no perceivable affect on boost ....just as a pinhole leak in a bathtub wouldn't have a meaningful affect on the overall volume of water in the tub.
So the definitive answer is .....change it if you want, but you don't really need to
ps.....for those that are freaked out about leaks... Did u realize that your wheels and tires leak air also?