Today I had the pleasure of meeting Jeremy Formato from
http://www.fasterproms.net/index.html . He installed a ported intake manifold and throttle body on my G8. Jeremy is a really nice guy, did great work and didn't mind me hovering over him and asking questions while he did the job. This guy has a tremendous amount of LS knowledge and experience and doesn't mind sharing it.
I was given the opportunity to compare my stock manifold and TB with the pre-ported ones and the difference is much greater than I expected. Jeremy removes a lot of material from both and the finished product looks and works absolutely kick-ass.
As for performance, I noticed 2 things right off; throttle response is improved and, unexpectedly, my idle has smoothed out considerably. Hard to tell how much difference in WOT operation, will need to do a few timed runs but I expect this is going to really add to my overall performance in general when combined with the coming mods.
Jeremy normally does a tune after installing these but since I have a Vector tune which will be updated soon we skipped that. The cost for the porting and install was $400.
All in all I'm very pleased. It was great meeting Jeremy and, in my opinion, his product is top-notch. I highly recommend him.