Quote:
Originally Posted by maytag
This is FACT?
Can you point me to the independent verification?
15% more air under what conditions?
WOT at 6k? Or, what, exactly?
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Say we give him the benefit of the doubt that at some point the IPD Plenum will flow 15% better, most likely at WOT on a modified 3.2 engine. Add 15% to the cost of the 997 Plenum, that would put the cost at $80.50, so where does this $800 become justifiable? Like I said, what HP do you gain from buying the IPD $800 Plenum over the 997 $70 Plenum? You're surly not going to get 15% more more HP with the IPD Plenum over the 997 Plenum and you're paying 1,045% more for that IPD Plenum. Let that sink in a bit 1,045% more then the 997 Plenum?
BTW: The 997 Plenum has an excellent outer radius on it's Y shape, it's not just a T shape.
Does this radius matter? According to Jake Raby it does.
Quote:
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Originally Posted by Originally Posted by Flat6 Innovations
No, it doesn't.
The short side radius of the IPD is where the trick is. You can't develop an intake component using a shop vac. If you do, you'll never see that what you are doing is hurting performance, or doing absolutely nothing!
With a pitot tube inserted in the intake where the splitter is installed in this photo will give zero, or very, very little velocity on the flow bench. Why? Because the air is pulled to the short side radius.
Yes, I have direct experience with this.
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https://rennlist.com/forums/996-forum/944002-alternative-to-ipd-plenum-2.html#post13767949