Alright....resuscitating this thread for recent feedback and/or experience with installing the ground kit.
From what I've read here and along with other web searches, the majority opinion is that the kit has no effect on actual performance for AT. I already have AAM mid-pipe with short tails and Stillen Gen 3 installed and waiting for the FI HFCs I ordered. After the HFCs install, I plan on doing a dyno tune, so do think it's worth it to install the ground kit?
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