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Peugeot 407 - Manual boost controller install/Peugeot 407 2.0HDI - redmule
If I fit a manual turbo boost controller, can I connect the hose leading to the controller to the large pipe just before the intercooler rather than to the turbo itself, as the turbo is totally inaccessible ? Would it still work?
Peugeot 407 - Manual boost controller install/Peugeot 407 2.0HDI - Peter D

What is a "manual turbo boost controller" ?? Regards Peter

Peugeot 407 - Manual boost controller install/Peugeot 407 2.0HDI - galileo

What is a "manual turbo boost controller" ?? Regards Peter

I seem to have seen articles on these in US hot-rod magazines, basically they enable you to adjust wastegate (or blow off valve) to regulate the level of boost; useful for competition purposes, I suppose (if allowed in the rules).

The other day as I walked to town I was passed by a small hatchback which was being redlined in each gear with the 'turbo howl' at gear changes suggesting air cleaner had been removed, either for free flow or because matey liked to hear the turbo noise.

Peugeot 407 - Manual boost controller install/Peugeot 407 2.0HDI - craig-pd130

Manual boost controllers only work in cars where the turbo wastegate is opened by a pressure bleed from the manifold, i.e. boost pressure is fed to the boost controller, which will open at the desired boost level to open the wastegate.

Most turbodiesel engines (including the Peugeot / Citroen HDi) use a variable-nozzle mechanism on the turbo instead of a wastegate, and this is actuated by a vacuum line driven from the engine's vacuum pump. So I don't think the MBC will work on your car.

Peugeot 407 - Manual boost controller install/Peugeot 407 2.0HDI - Gibbo_Wirral

OP - are you wanting to do this because you have a problem with your turbo?

The repeat sensor causes a bit of trouble on the 407, particularly more on the 2L model.

Edited by Gibbo_Wirral on 20/04/2016 at 09:49