Title: Noisy but, extra performance?
Product review: I installed this on a 1999 Chevy 454 which powers my 21' Motorhome. K&N; states that it should increase horsepower by 24 hp. I have always used K&N.; They have an excellent reputation in performance car circles. I have no reason to doubt their claim but I don't feel the extra HP. Nor did I notice any MPG improvement. I do hear the intake noise at high revs and it is very annoying. I would not do this mod if I had it to do over again.I have since removed it as the noise on long journeys was tiresome. Again, I can't tell if there was a power loss upon removal and I can't tell if there was any mileage gain when installed and consequent loss when removed. I've kept mileage records but there have been too many variables to know cause and effect.
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