The flaps stay closed until you are above 3500 rpm. The drone is not there.

If you have mild-to-wild and you have it open at lower rpm's you can close it. The drone disappears.

You're welcome.

 

i don't think he was disputing this. i believe he's stating that there is drone unless you close the system off "when" the drone starts.

 

No kidding. My comment is regarding this post (post 16)....

"I have NPP's on my car, they are always open and I have never experienced "drone". "

I know how the system works, I have the "M2W"...that I built...and am quite familiar with the fact there is no drone at low rpms when the flaps are closed.

Run along.

 

What you are reading is that people are overriding the factory setup. The manual switching normally refers to the mild 2 wild system. The factory setup automatically keeps the system in closed mode (quiet). When you get over 3500 RPM, the system will automatically go to open mode (loud). Some users prefer to have manual control over this. I hope this helps.

 

My a6 automatic coupe w/npp has no drone. Zero and my hearing is 20/20.

Maybe its the nitrous, who knows ?

And if you want to save $100, you just pull the fuse in the floorboard and the valves are open all the time. I know theres a Mild/Wild switch but MidAmerica makes an on/off switch for $59, thats what I use. No remote.

Not only is there no drone, but with the rev matching A6, the npp's bubble and pop on downshift, it sounds badaXX. The guy in the Mercedes/McLaren that I drilled today heard it loud and clear.

For those that dont like the look of the NPP valves, this is what I use. Thanks CorvetteMods !

 

If you are not against after market items, go with the Billy Boat Fusion system as Okie08Vet says. You get everything you need. With the touch of the button on the fob, you can be quiet or loud. My son and I installed mine in the driveway on jack stands in one day. Love it.

 

 

The C6 A6 has rev matching?

 

I've got them on mine with the Mild to Wild it And Love them..My buddy wanted a set on his 2010 GS and as some have said they are hard to find. but i grabbed these for him this weekend for a steal!
http://myrtlebeach.craigslist.org/pts/4266787152.html

 

Mine does

 

My 08 has "rev Matching on downshift" A6

 

" nasty performance pipes "

 

Forgive the noob question, but I'm a noob and I don't know. What does A6 stand for, and what is rev matching?

 

Your eyes may be fine, but you better have your hearing checked. Pretty clear you're not hearing low frequencies if the flaps are open and you're not hearing drone in the ~1500-1700 rpm range at cruise.

 

A6 - Automatic transmission with 6 forward gears...aka 6 speed automatic

Rev Matching - During downshifting the PCM raises the engine rpm the appropriate amount to enable a smooth gear change. Newer cars such as the C7 have automated this with the manual transmissions as well.

 

Got it, thanks!

 

96GS#007said:
"Pretty clear you're not hearing low frequencies if the flaps are open and you're not hearing drone in the ~1500-1700 rpm range at cruise."

If I am not mistaken you are driving a 6 speed GS. How can you know so much about A6's unless you have one ?


Did you ever think it may be YOUR car that has a drone, not the other 200,000 C6, A6 Coupes ? Not every issue you have with your car applies to the 99% of the cars.

PS: When are we driving at a steady 1500-1800 rpm ? In 6th gear, my revs are just about 1000 rpm. If you are at 1500-1800 rpm upshift.

This is the only place I know of where people tell you they know more about your car than you do.

I was being FUNNY, something there is a shortage of here when I said my hearing was 20/20. Read between the lines.

 

I've had autos (not my cup of tea) and have been in many dozens of C6s, both with auto and manual transmissions, including base models, GSs, and Z06s (obviously manual only). I have been in them on the street and on a variety of race tracks (road courses) around the country as an instructor and as a driver.

I have yet to be in a C4/5/6 that does not have some level of drone when running an aftermarket exhaust. In the case of a C6, this applies to running NPP with the flaps open all the time as well. Btw, from an aftermarket perspective, Corsa is about the closest to no drone.

There are several ways to get around the drone with the NPP system....upshift, downshift, close the flaps. Navigating around the drone doesn't mean the drone is not there. It is still present and you hear it as you pass through that rpm range. To claim no drone because you drive around the rpm range it occurs is misleading.

 

96GS#007, said;

"To claim no drone because you drive around the rpm range it occurs is misleading"
--------------------------------------------

Jim,

Ive had 6 speeds,(not my cup of tea)and like you, in 13 years and 5 corvettes, I have seen, driven, and ridden in hundreds of corvettes.

Your background, which I admit provides you with a lot of experience as an instructor and a driver.

BUT UNLESS YOU HAVE RIDDEN IN MY C6,A6, YOU CANNOT TELL ME WHAT MY CAR DOES AND DOES NOT DO.

I dont care if you are the guy that assembled my car at the factory, you CANNOT make statements about my car, and thats exactly what you are doing.

I know you are not trying to be difficult, I dont think that for a minute, but you might want to say, "MOST C6 NPP equipped cars have a low frequency drone". But to say that they ALL have that particular issue, makes you clairvoyant, which I dont think you are.

Unless you drive or ride in MY car, you cannot tell me what MY car does, period, exclamation point, end of story.

Sit back for a moment and think about what you are saying, take yourself out of the "forum" environment where everyone feels free to say whatever pops into their minds.

And as far as,"To claim no drone because you drive around the rpm range it occurs is misleading." is a crock. You, sir, are misleading readers by saying something occurs 100% of the time.

You may have discouraged a reader from buying a NPP equipped car because he fears this issue you claim exists in ALL NPP equipped cars.

I will close in saying, I would never begin to tell you about YOUR car, no matter how much experience I have on a subject.

Steve

 

MY C6 A6 w/NPP drones at highway speeds (55 to 75 MPH) in 6th. Every C6 A6 w/NPP I've ridden in or driven does.

Steve-O; You, sir, have a one of a kind car.