CO2000A418T

I have a 2000 1.8T ATW engine, I am running a Wett 1 bar chip and K&N air filter and am other wise stock.

I suspect my N75 valve due to occassional DTC that only seems to hit at WOT:

17965 - Charge Pressure Control: Positive Deviation

In seraching the boards I have numerous part numbers for possible replacements:

058 906 283C
078 906 283B
026 906 283H (think this is stock, will verify, definitely the most expensive)

and ofcourse the ECS "race" N75.

Can anyone explain the differences in the operation of these valves, especially the non Race versions since some are a good bit less expensive than others?

Thanks