Most important thing is to increase the front camber to at least -2.0deg. With Stinger/G70, the only way to do this is with coilovers kits that include a top camber plate. Stock is non-adjustable and even with Eibach lowering springs, ours won't go higher than about -1.0deg. It's difficult to tune the understeer out without changing front camber. Stiffening the rear anti-roll bar vs. the front helped, but even then neither our Stinger or G70 would steer as neutral at the limits as we would like.
We just swapped to Riaction coilovers before going to Eagle Canyon Raceway last month. We had the front camber set at -2.0deg and the difference is amazing. I'm sure being able to stiffen damping help the most, but that affects mostly initial understeer, whereas camber helps with both initial and especially terminal understeer. The car is finally where we would like it to be. For pure track alignment, I would probably push front camber even more to -2.5 or maybe even try 3.0deg next track event. However, these are our daily drivers as well, so -2.0deg front is a good compromise without tearing up the inside tread too quickly on our street tires.
August in Texas was so miserably hot, I completely forgot to take pics, until at the end of event when we were swapping back to street tires. I will see if I can do some screen grabs from the GoPro vids. ECR is a very nice track that just recently got renovated. New track surface is fantastic and nice elevation changes.
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