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- Plano, Texas, USA
So this's the design issue by putting in smaller capacity BTU's of AC unit for new CX-9! It may be inevitable for the new 2.5L turbo 4. There's no replacement for displacement. When turbo is not spooling up at low rpm below 2,000, the engine is a 2.5L 4 cylinder with minimum torque available. Mazda simply may not be able to use bigger AC compressor like the one used for 3.7L V6, which would drain too much power in that rpm range. A variable capacity AC compressor, or "inverter" AC compressor should solve the issue but it's too expensive to use it.Well sorry to confirm guys, the AC is not as cold as the old CX-9, got a chance to test drive a brand new CX-9 from Wantagh Mazda in New York. Weather has been a heat wave and humid as hell (92 + deg F) for the last three days here in NY, it took a very loooooooong time to cool down the interior and even then it was still not cool enough, I think this is how it is due to the smaller engine, not a low charge refrigerant issue.