strange thats what he told me maybe bill can shed some light on this and is he still running your intercooler now?
I posted a poll for Jabba thats all.. no more than that.
I am running my AM core still. Works for me on >2bar boost and 485bhp... Nuff said. (but be prepared to remove metalwork to fit it)
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As for logs... You need to test pressure loss across the cores over the test, as well as induction temps. Anyone who remembers the GRS cores, they cooled well, but caused pressure loss across the core. At face value you would say they worked well judging temp logs alone. Pointless exercise.
I have not yet seen ANY intercooler supplier provide this information, and another factor to also think about it the mass airflow of that particular install. (is it k03, k04, IHI, GT28RS, bigger)