I have a 3.5L IP on my car, so I have the ALDA turned way, way down. With the stock ALDA setting it was rolling coal like crazy, so much so that I was getting fuel dilution in the oil. Still not ideal and I'm on the lookout for a proper 3.0L IP for the car. I have a couple threads on this forum detailing the IP saga I went through on that car. The 3.5L pump got the car running and at that point I just left it!

It's easy enough to determine if you have a clean intake or not. Pull the crossover pipe and take a peek inside. If it looks like it's full of coal dust, you know it's probably worth pulling the intake and cleaning it out.

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Current stable:
1995 E320 157K (Nancy)
1983 500SL 125K (SLoL)

Gone but not forgotten:
1986 300SDL (RIP)
1991 350SD
1991 560SEL
1990 560SEL
1986 500SEL Euro (Rusted to nothing at 47K!)

Gone and wanting to forget:
1985 524TD 167K (TotalDumpster™) [Definitely NOT a Benz]