Another spool up on twins question!!!!

the air side would work well, but the turbines are a bit heavy, and that is what hurts spool. I am running a HX40 over a GT42-02. With some head porting and a cam, the gravy RPM is about 1550.

I rode in a 500 HP 12 valve this weekend. i\It has a II 62/71, and the turbos on my truck build boost considerably faster...with less fuel.
 
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