Quote:
Originally Posted by Asbjorn
It is an excellent build, but it is not for the track at all.
I have mentioned it before, and I will do so again, because this is misleading marketing.
The CSF radiator is not a significant upgrade. When it was really hot, I was able to hit coolant limp mode after two laps with this radiator. I was running upgraded dct, engine and FMIC coolers, and all those temps were fine, except coolant. And the cooler size numbers explain why:
N54 CSF: 2100cm2 radiator frontal area (main rad only). A bit more than 10% is used for as DCT core on the AT version.
Stock S55: 3200cm2 radiator frontal area (main rad + one aux rad)
The N54 platform desperately needs an aux cooler upgrade, and any serious cooling company would be focusing on this rather than what CSF is doing here. What they did on the tyler M2 N55 build they sponsored, adding two M4 aux coolers is a much better idea.
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You have had a very different experience than every other customer who runs our radiator - this our #1 selling BMW radiator, and we have countless 3rd party validation from customers who are happy with the performance of this radiator.
Bleeding the system correctly + making sure stacking of coolers is not effecting proper airflow is crucial. If you have a high horsepower performance build, or tracking in extreme conditions - adding hood vents to allow hot air to escape would be recommended.