Quote:
Originally Posted by jerry2866
what would be the advantage of spending $100+ for the mild to wild plug and play rather than manually disconnecting the butterflies for free?? does this affect the computer some way??
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I've got the M2W wireless remote switch. I love being able to open the butterflies to hear some exhaust music.
Butt.....The night before a 1,600 mile road trip the butterflies were staying open all the time. I thought it was the M2W switch malfunctioning. I messed around with it, checked the fuses, checked the ground, but it wouldn't close the valves.
We went on the trip with the valves open, and the first thing my wife said as we pulled out onto the interstate was "the Z06 is a lot louder than the regular C6". (I've got Corsa Sports on the '05 coupe).
When you are cruising in a range of about 1,400 to 1,700 rpm there is a rather annoying drone - it's not a nice-to-hear, satisfying exhaust note, it's a drumming resonance that bothers even my old deaf ears.
The solution was to get up to 85 or better to get out of that rpm range!
When we stopped for the first night I checked things out again but couldn't find any problem with the electrical connections/fuses. I could hear a clicking in the M2W box when I activated the remote so I was pretty sure it was working okay.
The next night I started looking at the vacuum lines. Everything seemed hooked up in the back at the exhaust. I popped the hood and no idea in the world where to start looking for lines in the engine compartment, but right in front of me was a loose tube. It's in the very back-left of the engine compartment, right by the braided fuel line that goes into the FRC. The end of the tube was split, so I cut off an inch and pushed it back onto the nipple and started the car.
Voila! That was the problem, and the butterflies closed now that their vacuum source was reconnected.
So......moral of the story is:
1. There is an annoying drone at highway cruising speeds if the valves are open all the time.
2. If you don't want to get a M2W remote or make a switch to control your valves, you can cause them to be open all the time by pulling the fuse, or you can pull the vacuum tube loose and cap off the nipple (either back at the valves, or in the engine compartment). I wouldn't leave an open vacuum line. I don't think either way will mess up the PCM, although I'm sure the PCM uses some manifold pressure measurements and an open vacuum line might screw with those inputs.
Me, I like having the ability to open the valves most of the time, but it's nice to be able to close them for quieter highway cruising.
Bob
Linear Mode
