NPP valves.
CF Community Team
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From: Pittsburgh
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From: Grapevine Tx
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Melting Slicks
Joined: Jun 2019
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From: near philly
IMO a mild to wild switch is only useful if you are somebody that wants to constantly go back and forth between full loud and base camry sound.
Personally the only times I have ever wanted the valves closed was on a multiple hour highway drive where the deep sound just wears on you.
Probably came up 5 times total in the 6 years I've owned the car.
Burning Brakes
Joined: Oct 2009
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In the settings, I have the engine management sound set for 'Track', but I only drive in Sport & Touring modes.
I've noticed that the outer two exhaust trumpets get discolored, while the inner two do not. Is this normal?
Thanks
I've noticed that the outer two exhaust trumpets get discolored, while the inner two do not. Is this normal?
Thanks
Race Director
Joined: Feb 2001
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From: Grapevine Tx
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I close mine when coming back from dinner at night in my neighborhood and also when I'm spending any amount of time on the freeway. We do that a lot around here.
Melting Slicks
Joined: Jun 2019
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From: near philly
the outter two are the open tips
the inner two are the closed ones
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Bill
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Great discussion and a better understanding of how the NPP valves operate.
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Michael S. Palmer
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From: Ocala, FL
Just an FYI for anyone debating their options, you can also tune the NPP exhaust to your liking with something like an HP Tuners. It will cost you a few credits to license the right module but I got tired of the quiet Sport mode starts and also didnt like leaving it manually set to Track mode 24/7 since you cant quickly switch to Touring. So I redid mine to make Sport wide open through the first 5 gears and then close down in the cruising gears. Track is wide open at all times and sport is normal. So I now use the selector **** but get the sounds I like isntead of the defaults. The defaults do behave differently by year a bit.