2008 Silverado 5.3 Restricted Exhaust P0300

We have a low power / misfire under heavy load situation. Watch as I show you how I proceeded with my diagnosis. There are always more than one way to go about your diagnosis, so please do share your thoughts in the comments. Now one thing I had here that was abit off was the more regular misfire on cylinder #7, however I decided to go with the converters as we had bank 1 misfires , and banks one - trims and bank 2 + trims. We have to see if misfires are still counting on #7 after the restriction in the exhaust is taken care of. Also I share how to use reference waveforms in Pico Scope

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