Actually there are use cases for this specially on older cars where ground points and ground cables have corroded over time. In my case my 88 944 turbo S needed this to fix fluctuating gauges in the dash and headlight. Adding additional ground points really helped my issues. Gaining HP? I don't know where that came from but maybe if you have ground issues with your ignition system this may help this as well.
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2008 Boxster S PDE2
02 Boxster S Blk on Blk(Stock for the Wife)
88 turbo S (My Toy) slightly modified
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