i had a similar issue with my s, after replacing close to everything, it ended up being the icm. i have new ones. but what i didnt do was put the correct thermal paste between the icm and the heat sink. that fixed everything. but i have heard of brand new icms being bad. but you don't have the luxury of switching them and seeing if the codes and misfires follow them. since you only have one. could try a volt meter, hope that helps. another thing is are you running stock IC's? if you are id check them for a leak, mine had a small leak on the plastic end tank. but it could be something as simple as that. or you have a boost leak somewhere else.
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