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Old 17-10-2008, 05:14 PM
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Default Interesting question for those inclined..

Is the placement of the throttle body important before or after the plenum??

The reason why i ask this question is from a conversation from someone today...

If the TB is before the plenum and runners then when this opens the plenum is flushed full of air which enters the heads. I.e the air is pushed into the heads..

However if the TB is after the plenum and runners i.e in the TGVs then does this defeat the purpose of a plenum, as the plenum and runners arent able to push the air but infact suck air into the heads??


So would this mean that it would be better to have just a plenum with the shortest amount of runner length??

I hope i explained it properly??
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