numbers like that make me wish I had two turbo miatas, one with a full exhaust/cat, quieter intake, and say a t25. Then one with a super 60, external wastegate dumping to atmoshere, full 3 inch exhaust, no cat etc.
nice numbers, enjoy
I'm curious how you got the torque to hold flat till redline at a constant manifold pressure. Usually it dips off a lot, especially the T04Bs that have very narrow efficient ranges with sharp dropoffs. Those are really high numbers for 13 psi on a crappy turbo like that, even with a good ECU like a TEC.
Your first dyno looks a lot more representative of a normal miata dyno chart with the puke and die around 5500. I am curious what mods you did between the 260 and 290hp runs.
Also, are those corrected figures?
I had a T04B-S3 not a V trim. The V trim is a slightly higher flowing turbo if I remember correctly.