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Subject Going with the larger pipe slows the air velocity from
     
Posted by not4resaleZ on February 27, 2017 at 10:23 AM
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In Reply To Re: Re: Are the breather mods all bogus? posted by MikeC(NZ) on February 27, 2017 at 02:02 AM
     
Message about 100 mph to about 66 mph. This is at about 7000 rpm. The larger intercoolers slow the flow in the intercoolers even more. This allows the intercoolers to extract more heat. This to me is a reasonable explanation for why there is a significant improvement in hp. In my opinion, the reduction in flow restriction is not enough to account for all the hp gains.

If gains were all due to reducing flow restriction, the larger inlet pipes would make a huge difference since the inlet pipes see a difference in volume when the boost in raised.

     
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