Greazzer's building his fan following across the pond too! I've got a spring, rebuilt injectors and fuel lift pump going on this weekend.

According to his testing, my old injectors were running 150 psi lower than spec, so the difference should be very noticeable. Safe to say I wouldn't have my fuel system cared for by anyone else.

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Why I will never do business with "DieselKraut" again

http://www.peachparts.com/shopforum/mercedes-benz-used-parts-sale-wanted/378935-why-i-will-never-do-business-dieselkraut-again.html

150psi won't make a tangible difference. I've run new 240/ nozzles at 135, 145 and 150bar. No difference at all in power, smoke, economy or noise.
Balance is much more important than overall pressure. A good tester with a proper shim kit can get them +/- 2bar consistently.