Ok, so I'm trying to decide which gauges are most beneficial and need some help. Since our cars are v6's and have two headers would it be a good idea to run two a/f or is that an overkill? I am interested in knowing if running one a/f is close enough estimate on our cars overall a/f ratio without having to run a 2nd? Will tuning with two a/f gauges really that make that much more of a difference?

Also I would like to know which gauges in general are most beneficial besides a/f. I just got my pillar pod (BIG THANKS TO JONNY!) and I'm trying to decide on gauges.