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Speedy Squirrel Speedy Squirrel is offline
Rocket Scientist
 
Join Date: Jun 2008
Location: Detroit
Posts: 881
There is no question that a single throttle will have more pressure drop than individual throttles, and that individual thottles minimize the vacuum depressurized volume. This yields maximum power and response potential. You can forget the Helmholtz tuning because if you run the numbers you will see that you need some long runners to get any low speed improvement. Filling those long runners, regardless of throttle choice harms response more than the tuning helps. Also, when the throttle is open, the intercooler tanks act as a connected plenum, further reducing the pressure gain.
All this leads to small plenums connected to short itb's, ala 962.
You can Jack up any arrangement trying to control too much fuel with only 6 injectors, so observe the 9 gm/s rule.
Old 11-18-2009, 07:12 AM
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