I was looking into getting a

HKS Hi power exhaust
SSV Extreme Flow Kinetix Manifold

and a Intake of some form


Questions:

1. Will these void or affect my car beside Hp and Tq gains?

2. Is there any good feedback on these because I saw a bit of mixed reviews on it?


Also I plan on going boost sooner or later

 

I also forgot is there any dual throttle bottle intake manifolds for the 2005 Infiniti G35 coupes.

I know you can get them custom made but was wondering if any companys made one.