Sixto makes a valid point. The turbo engines have a lot of "enhancements" to make sure they don't blow up. A boost gauge and an EGT gauge are de rigeur for anyone wanting to "add a few HP." Winmutt also makes a good point -- there's no shortage of air, especially with a turbo to help it along, but stock engines run out of fuel quickly unless you play with the IP and that is expensive. (Bring back carburetors!)

Jeremy

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"Buster" in the '95

Our all-Diesel family
1996 E300D (W210) . .338,000 miles Wife's car
2005 E320 CDI . . 113,000 miles My car
Santa Rosa population 176,762 (2022)
Total. . . . . . . . . . . . 627,762
"Oh lord won't you buy me a Mercedes Benz."
-- Janis Joplin, October 1, 1970