| Although dyno numbers are great you guys need to post up some figures. A graph of inlet and outlet air temperatures assumeing a given airflow through and across the intercooler would be great....compare to stock and stillen to see the real differences. In addition I'd like to see some pressure drop numbers and airflow numbers (specifically CFM at given pressure drop). Secondly, I'm a little confused regarding the value of intercooler ducts when the air has no place to go. Unless the wheel wells are vented, incoming air at speed will build up in the bumper/wheel well liner area and flow will decrease with increasing vehicle speed. This will eventually result in diminished intercooler effectiveness. All related is the "ram-air" effect which is clearly not present with the stock intercooler duct design. Ram air assumes a large opening with decreasing cross section leading to increased flow velocity in order to balance the mass flow. The stock intercooler ducts were clearly not designed for this purpose. In fact I'm pretty sure the only reason Nissan used them was in an attempt to prevent stagnation of air around the intercooler at speed. The ducts theoretically solve the stagnation problem by not allowing air that's passed through the intercooler to make a second loop thru...unfortunately the air has very few places to go and as a result will still back up causeing a flow drop at speed. I'd like to point out that I'm not knocking Z1's products or service or Ash's work. In fact, most of what Ash posts on TT.net is informative and correct. If I they'd come out with these about 4 months earlier, I'd have bought them instead of my Stillen's. Also, the ducting for the Z is effective enough to make the car work. I'm just pointing out that it could be alot better.
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"I have no experience with this specific pump so don't continue reading expecting to find you answers." - ZLover4Life 07:14 3/16/04
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