on DSM cars the grounding system is horribly and a grounding them with better grounds makes a big difference. Supposedly 7-10 WHP. Which is incredible to say the least for a bunch of ground wires. This grounding concept for Hondas has come from the DSM cars. I saw the same dyno, and yes I think it was import tuner that showed 2-3 WHP. So is it hype or truth? I think its hype personally. U know not to believe everything u read.
As far as what gauge to use... I used 4 gauge on all my custom ground wires.
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