I fitted the valve yesterday...took about 5 mins. Disconnected the boost controller on the vehicle as suggested by the guys at Opposite Lock (who sold me a nice version of the Dawes which can be adjusted without disconnecting it).
I am happy! Max boost has been 13-14 although I did glimpse one reading of 16. The boost seems to increase in a linear fashion with the application of right foot. Boost alarm has been blissfully quiet. I'll let you know how it went next week after a country/bush run. Will also report on EGTs.
Interestingly the turbo whistle that was very loud (after you take you foot off throttle when changing gears) has now disappeared. Was that noise from the wastegate due to over boost I wonder? Shame really, it sounded quite sexy!
Conclusion...CRD Patrols may still benefit from a Dawes valve after EGR block and exhaust upgrade.
Harry
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