Rusty, where were the butterflies located? Jerry 

 

Hi Jerry,

 

I was using a TWM throttle body, with 4 injector pockets, so the injectors, and butterflies were both at about 30 inches from the ports.  It's my understanding that the issue is with the injector distance, not the butterflies.  

 

It would be interesting to try putting only the secondaries at a distance, and make the staging point as high as you can.  This would give you a nice cooling of the intake charge under full throttle ops, but maybe (key word) not hurt throttle response that much.  This could be particularly useful for a turbo without an intercooler. 

 

FWIW, the cooling of the runners was significant.  During my initial runs (in the summer), I shut the engine down a couple times to go look for leaks, since I was getting water drops on my canopy with the cowling off.  Turns out, it was condensation on the intake runners that was blowing off, and they were cold to the touch. 

 

Cheers,

Rusty (where the heck is Ed when you need him)