I ve seen on youtube video and coment to you, at same ambient temps 2xstock coolers with -10 c mode works like your setup, now i try cl55 heat exchanger in addion to stock, in 30 c iats rise to 50 and drops to 45 at 220 km/h i need more colder temps to give you full result , ps ive never split cooling and never use 2x pump, only 010