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Why my car's afr is lean at the full boost.İ changed injector, maf.coil and fuel pump but we could not solve the problem.At he no boost, afr shows 14.7 at the full boost afr shows again to 14.7 How can i solve this problem?.


When i remove the iat sensor afr come to full boost 12.3 afr.My car gives only clutch pedal position sensor at the vida.
 

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Looked to me like you have a boost leak based on that little log file. You peaked at 1 bar but fell off quickly. A T5 should be able to hold 0.7-1bar through the revs.

Also, the 99+ cars with ME7 engine management use wideband oxygen sensors from the factory. It's going to try to maintain 14.7:1 afr or lambda 1 as much as possible. I'd check for vac/boost leaks.
 
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