Tuning questions?

[steves66]

The 36* is coming in at 2500, with no preignition at all that I can hear. I could barely here it before with these 3" Dynomax Ultraflow Race mufflers!
I will try using a different gas station and see if that helps. It don't seem like it is hindering the cars performance, but who knows.
I thought of using a "T" in the housing but didn't know how it would affect the accuracy of the gauge reading. I'm probably overthinking it and it won't make any difference!