Thanks guys, I have not yet bought a boost controller.

Has anyone tried this one:
http://www.boostcontrollerstore.com/...-Kit-p-15.html ?

And one more thing, IF I buy a good boost controller, will I be able to have 2,2 bar at all time with my T34.55?
Or will it as now with Amal valve, go in peak to 2,2 and drop to 1,6 bar?

Finally, I would be interested in buying a good used boost controller..