| So the turbo is still spinning. So far so good. It is pushing air towards throttle bodies. Oops, wrong. It's creating a high pressure gradient. It's not "pushing" anything anywhere. If the throttle happens to be open, that's where the air goes. Compressor surge is when the air bounces off the TBs and comes back and hits the turbo wheel, slowing it down. Air doesn't "bounce." Once the throttle closes, the high pressure gradient increases quickly and eventually causes the turbo to stop spinning in a rather violent fashion, unless the excess pressure is vented. Since the turbo is pushing air towards the TB plate, the area around the TB plate is the area of highest pressure, therefore putting a BOV there is best??? The turbo isn't pushing anything anywhere. It's creating a high pressure zone. The pressure gradient is distributed throughout the system, the throttle body is not necessarily the area of highest pressure. Putting a BOV next to the throttle keeps the air flowing from the high pressure gradient, in the direction of the throttle, without necessarily releasing all the pressure throughout the system. A BOV on the intercooler pipes would cause reversion in the system, and vent pressure from both sides of the pressure gradient. Thus the turbo will have to fight the kinetic forces of reverted intake gas upon throttle reopening. Or is the entire intercooler track of equal pressure?? It's a gradient.
Recursively Yours,
Kenny...
PETZ Member #5
SteamyZ. Never had did me wrong. - SL103 07/06/04 11:58:15
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