I have UR turbo first version with AEM EMS. I also have FJO 02sensor that reads 13.5 or so in cruise with little throttle, 20.00 in cruise without any thottle, and 13.5 with second jump to 11.2 than comes back to 13.5 during WOT (Weird??). I had a chicking noise coming from the engine before (I have gotten a valve adjustment about 1.5 years ago). This time itz gettin really serious. After the turbo it made the noise after 3000PRM to 4000RPM than not (After AEM EMS) it started to chick in all RPMs. It seems to come from the turbo manifold heat shield but I can never be too sure. Can it be the valves?

Tuner

 

Its the tuning mate, I had it on mine and it just went away!?! mine sounded like loads of nuts and bolts had been dropped inside the block........DETONATION.

Get your tuner to ring Sean Mcelderry from Torquefreaks while you are there and talk him through the problem, Sean is a great guy and will help you as much as he can, he saved my previous tuner who initialy set up my base map(the one that rattled its tits off) a good few hours of tuning as there are so many hidden windows that could be open at any one time when you are running the AEM PRO.

Mine just runs out of fuel now I need bigger injectors I'm told but the plus side is I'm making 210RWHP at only 4,800rpm Woo' frickin Hoo.