Yes considerably so.

 

Turns out my exhuast mani was leaking like crazy. It didn't mate to the head properly but now it's fixed and all is good. And the car is still a little bit louder.

 

Glad to hear it Tommy.
Would be worth keeping an eye on the Manifold if its been ported to check for cracks.

 

Yea the mani did have 2 small cracks in it. So I bought another mani from a buddy and all was good. The cracks didn't seem to be big or bad enough to leak but I didn't wanna chance it anymore. Now I gotta fix my massive misfire and then see why I'm not getting my target boost n then I'll be happy.thanks for the replies though.