Hi everyone, this is my first post but i have been on here soaking up all the info you guys have posted and cant say enough about how much this forum has helped me understand this process. I have swapped a genv 6.2l into my 1990 miata. i purchased the drivetrain from a friend that had it in a rx7. The setup was previously tuned but it was never right. I was told it ran rich at wot. That issue was easy to resolve however im getting knock retard under hard acceleration. the engine is out of a 2016 yukon but the ecm and tune is a 2015 corvette. im wondering if im not fighting some modifiers or coeffiecients that i dont understand. I have noticed that the cylinder airmass scaleing and the p ratio scales for the two vehicles are not exactly the same. I guess im curious if anyone can think of any issues with this setup being able to be tuned correctly? The engine is basically stock internals with a msd intake manifold and custom exhaust manifolds that i had too fab. any help, advice or criticism would be apprieciated.
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