I'm not sure how it applies to extended warranties, but the Magnuson-Moss Warranty Act says that it cannot. The worst allowed is to deny a warranty claim when they can prove that the failure was caused by your modification. The rest of the vehicle is still covered. Don't tell me you paid Honda prices without expecting the engine to outlast the warranty!gburn wrote:As a Honda certified used car mine is still under a warranty. I wonder if that would be voided if I put one in.
In the real world it's not so clean; dealers will balk and refuse and blacklist your engine and anything they think they can fool you into accepting. I don't understand why, since they get paid for it, except if they think they'll get denied payment. In extreme situations a threat of legal action, or some actual legal action, may be necessary to enforce the Magnuson Moss act.
So, when it's all said and done, you gotta pay to play; modifying your warrantied car is risky business, though not as risky as some people think.
I'd say go ahead and put on the intake if it will make you happy, although I'm pretty skeptical that an intake upgrade is useful on a stock engine unless you believe Honda's engineers were incompetent.