I did a little test to compare the backpressure of the PWR IC core. These guys don't even have a US website anymore so I think they're pulling out. I wanted to see if they're HP ratings are accurate. They have such a small frontal surface area I found it hard to believe that they support the air flow claims. So, a little megasquirt connection, powered by the stimulator, provides the MAP readings I need. The airflow is provided by a Husqvarna 125B, which is rated at 425 CFM full throttle. Waaayyyyy more than my 2.1 L G60 will ever see. Now I know this is a fan and not a compressor so it probably doesn't get that high in this test. But still, maybe like 300HP, can't remember.
Atmospheric reading was 95.5 kPa or 13.85 PSI
Max PWR IC at full throttle was 103.3 kPa or 14.98 PSI
This is a little more than a 1 PSI pressure drop across the core. So I really expect to see much less at the air flow my engine will see. Out of curiosity I plugged the stock G60 IC up to see how much backpressure that has. Max reading was 103.8 or 15.1 PSI. Even though the surface area is larger, the inlets and outlets are horrible on this thing. Hence, why it flows less than a core half its size.
Food for thought I guess.
This is sealed by some plastic cement.
G60 hooked up
Tight squeeze for the coupler but it works