If you are already spending 1.5k for the tune, do everything you can now in terms of bolt-ons because if you decide you want to add them later you will be up for a $700+ retune. Also, Spiro's tunes don't generally see massive peaks (from what I've seen) but they are very quick on the road/strip where it counts. So I wouldn't be too concerned about the peak power it produces on Spiro's particular dyno, the strip is where it's at