Quote:
Originally Posted by Joshboody
You are correct, but somewhat of an exaggeration. The psi different of 10deg is practically negligible in WGDC. You constantly disagree with anyone stating the Helix could potentially have higher pressure drop then other ICs. I’ve tested both AMS and Helix and the WGDC was almost 10% different between the 2 with the Helix running lower boost due to adaptation with the IC change. That being said I do like the Helix performance in IATs… I don’t think others compare from what I’ve seen myself and in logs. But there is a tradeoff in pressure drop.
For someone targeting max boost with meth, I would NOT recommend the Helix. For someone wanting the most consistent, lowest IATs I would recommend Helix.
I'd love to see some actual pressure test data.
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Here are some results from a typical intercooler scenario and running it through the PV=nRT formula (P=nRT/V):
Take a cubic foot of air @ 210F inlet temperature and a molar weight of 1.26414494, the pressure will be 20.029psi (intercooler inlet).
Reduce the temperature of the same air values to 74F, the pressure will be reduced to 15.9psi (More thermal efficient intercooler outlet).
Now use the same values again for 84F, the result is 16.26psi. Close to a half a pound of pressure and 10 degrees hotter (Less thermal efficient intercooler outlet).
The result of the more thermal efficient intercooler over the less efficient intercooler is an ECU adaptive increase of wastegate duty cycle to:
- Increase boost pressures because of the lower IAT to take advantage of increased power potential.
- Increase boost to fill in the pressure delta between actual boost and requested boost target and ultimately
An increase of ignition timing is also a result of lower IAT.