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Alin the AFR looks wobbly because the graph is showing a high resolution, like George mentioned it is only varying by a few tenths of AFR points throughout the pull. As for the difference in aftermarket uppipe and ewg, there really isn't none for a stock turbo. Maybe a few hundred rpm on spool, but nothing worth noting. The ewg is really good at controlling boost though, and ridding creep. I received the ewg setup and intake at a price that was basically given to me so that's why I purchased them. Here in the near future, after my suspension upgrades, I will go bigger turbo, TMIC, injectors, headers, and supporting mods so these upgrades will only help when I go bigger.
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HolyCrapItsFast , I want to thank you for your time during this process! You are a very professional, and knowledgeable tuner. You made this process seemless and easy compared to my last E-Tuner. The car continues to run strong and pull smooth. I can't wait to work with you some more. Thanks again.
Edit: I will be posting my own virtual dyno later. I had used the VD on my stage 1 tune before I began this process, so this will really show you the differences in the upgrade to stage 2 +ewg.