I like the set-up that you have and curious as to your EGT drop. After adding my IC which is roughly the same size as yours to the 603, I have seen a steady 250 degree drop in EGT's throughout the range.

Even on maxing out the ALDA, there has been no EGT increase. Now it's time to go internal to the IP for full load, so that's where I'll be watching for temp creep.

Best of luck and keep us posted!

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Stable Mates:
1987 300TD 310K mi (Hans)
2008 Jeep Grand Cherokee OM642 165k mi (Benzrokee)