The first graph is from a 2006 C6 ZO6 with the first pull ran 100% stock vs the air filter removed. A 20 hp gain just removing the stock air filter.
The next two graphs are 2007 models with similar modifications which include Air Filter/ LG Motorsports Long Tubes, X Pipe with cats removed, and the stock cat-back exhaust. OH.. And a Dyno Tune
Amazing Cars. 600 rwhp is possible with a cam and a few other changes. Add a small shot of nitrous and you are over 700 rwhp and 800 rwtq.
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I will own one of these cars someday.