Description:

I modified this OEM bypass valve by opening up and strengthen the return spring so it has more resistance and I also adjusted the blade inorder for it to FULLY seal.
I would suggest reusing your old gasket or buying a new one as the one on this bypass valve is questioning.
It has the same effect as the Detroit tuned ones or cravenspeed. It gives abit snappier throttle response  , can add more boost if your oem one isn't set correctly from factory and it helps eliminate the low-speed yoyo effect our cars often experience. 
it has been used about 5-6k miles and probably 6 months since i modified it. The engine it was on was returned to stock and vehicle sold. 
​​​70$ plus shipping.  PayPal is preferred 
pm or respond to this post.
stay safe N Mod on !!!!!!