Anyone using the Authority o2 Housing? If so how the spool compare to the stock housing? Im considering going with one or porting my stock one. Also where can i send my intake/exhaust manifold and possibly o2 housing to get it ported?

 

I had one on my car. The turbo does spool much faster.

 

MAP, PPI, Buschur, etc. all offer porting/coating services.

 

Thanks for the info and quick responses!