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Hi Guys, my 996tt has been lighting up the 'Check engine" light whenever the boost hits 0.3 bar. When that happens, the engine becomes shaky, feels like a few of the cyclinders are not firing. When we plug it into the computer, it reports that the right banks (unit4,5,and 6) are miss firing. We have drop the negine and found the following: Blacken plugs, intake manifold loose, fuel pump needs changing and injectors cleaned. All that is done, but the problem still persist. turbo is good. all other parts check found good. We now suspect the ECU or the Plugs wire/ electrical system may be the caused. Any idea guys? Thanks. A frustrated 996tt Owner!
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