Driad,

How do you add more fuel when the turbo boost goes up with the added turbo charger? Even with more air in the cylinders, the engine will not have much more power if more fuel isn't added. That is what the Alda does on the OE turbo charged engines.

The line from the intake manifold to the Alda deteriorated on my 300SD and the engine, even though the turbo was creating boost, didn't have any more power than a naturally aspirated engine because the Alda wasn't causing extra fuel to be injected to take advantage of the extra air in the cylinders. Just replacing that leaking line, restored the engine to full turbo power.

P E H