noticed minor improvements on the Camaro (did it in 10 gauge... 4 point). Noticed a bit more improvement on the Civic and not to mention it doesn't shock my finger into numbness any more (did it in 8 gauge... 8 point). I just spent $200 on monster cable and connectors @ Darvex.com to relocate the batter to the back and to do a 14 point grounding kit in thick 4 gauge and 8 gauge. Overdoing it?... maybe.