Yes Si trim thats uses the engine oil for lubrication and cooling. In the future I'll probably upgrade to the self contained T trim.

Is the T trim street legal?

Yes. Only difference is the oil is internally contained. You just change it out like you would a rear end.

Correction, mine is a v2 that uses engine oil, v3 is self contained. Si trim os good for 680rwhp according to A&A while the T trim is good for 750rwhp. Both are legal depending on application as far as I know.

I don't think the T-trim is street legal. At least it isn't for the Mustang. Do you road race the car or just drag race it? What don't you like about the engine oil version? I have mine going through a cooler which I think works better than a self contained one.

T-trim is legal for the mustang.

Just less to go wrong and less plumbing to worry about. The car sees more road racing but I plan to visit the drag strip to see what it does...once I get a roll bar.

Got a quick little update from the tech today. The car was leaning out up top so we stepped it up with 60lb injectors and a double fuel pump setup. The car still needs tuning but it made over 570rwhp on the dyno late in the day. Not bad since it was 100*F outside and 70% humidity. Hopefully theyll do some early morning tuning when its a bit cooler. Cant wait to drive it already.

Nice. What was the torque and how much boost did it make?

I'll find out soon. That was just a quick text the tech sent me. I believe it was on 7psi tho.