mismatched non seqeuntial turbo?

Actually, looking at the flow chart, it appears that at low speeds, the small one does all the work and also keeps the big turbo spooling.
At high speed, all the airflow goes thru the big turbo.

Best of both worlds.

This is my favorite set-up. 15 liter Cat 550 hp Bout 2000ft/lbs of torque



[ame="http://www.youtube.com/watch?v=7izbcCDcyLQ&feature=related"]http://www.youtube.com/watch?v=7izbcCDcyLQ&feature=related[/ame]