Hey guys. My '99 E300 turbo doesn't make any audible spooling noise. All of my other turbo vehicles have, and I found it strange to not hear anything. My mom also has a '99 E300, and in her car, you can EASILY hear a turbo spooling noise, as in my truck or other diesels. I figured something might be wrong with my turbo, had the dealer check it. They said it was fine (I guess I'll trust they checked it). Then I had them check my moms, which they also said was fine. I'm trying to figure out which one is fine, and which one isn't, because hers CLEARLY makes a turbo spool noise and I can't hear mine at all. Guys with this car please sound off!

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2004 Ram 2500 Cummins HO
2000 Jetta TDI
1999 E300 (sold)