I have a boost and egt in my car. I love being able to see what the engine is doing. but unless your a gauge nerd or planning on changing things under the hood, there is no reason for the extra gauges.

If you do want to install gauges, this site has the best prices. Its where i got mine. they are VDO to match the stock cluster.

150-052 - VDO Cockpit Black Series Gauges: Boost and Turbocharger Gauges - egauges.com

The other problem is where to mount them. I made an A pillar pod. I got a lot of flack for it, but it really puts them in a nice readable place. I don't think the Mercedes interior looks good with extra gages, but my want to for gauges out weighed my fashion sense, and I thought the A pillar was a good compromise.

A fellow on here replaced his clock with a boost gauge. thats the best idea yet, but you loose your clock.

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