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Hello, so I have been doing a lot of research and haven't found a solution, and only a handful of similar situations. I'm mostly trying to find out if anyone has found a solution or a reason. I recently purchased a 2008 Evo x. When I got it there was a lot of spark knock issues so I promptly took it to my tuner. We tuned it ,ran great, peaked at 25Psi of boost tapering to about 15-16. Later on found a piston to be broken (pre existing issue to tune) so I tore down and rebuilt the motor. The issue I'm having now is in my data logs I am seeing 0% active and passive wastegate duty cycle under all RPM, throttle position, and load ranges along with a higher knock count. I want to have it retuned but obviously need to figure out my duty cycle issues. From what I've found everything is pointing at an ECU failure. I do not know what solutions there are, so if anyone can help I greatly appreciate it!
 
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