PISTON RINGS/MISFIRES/FOULED SPARK PLUGS - The VCM mega...

This thread explains all the key details regarding VCM. Rather than re-explaining everything about VCM to every new forum member, they can simply be directed here. Self-service FTW! While there will be plenty of discussion in this thread, this first post contains the key information, so reading...

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I think the easiest to install is probably the VCMuzzler II.
It is a passive resistance device. Other muzzlers offer more features but may be a tad more difficult to install. They all are good and all come with installation instructions.
Do not hesitate to muzzle your VCM.

 

I muzzled my 09 Touring last week. We don't drive it that much. It only has 111,000 miles on it. No CEL or ECO light and the temp gauge reads as it always had.

 

I just installed the S-VCM yesterday and it took maybe 10 minutes. The hardest part was the zip tying! I believe all of the VCM muzzling devices are installed essentially the same way. Plenty of posts here and on YouTube showing the installation.

I don't think VCM "fails," it just stresses other components as described in basically every other post on this forum. I installed the S-VCM because I didn't like ominous feel of the occasional faint driveline "lurches" when the VCM disengages. My motor mounts are still good, but VCM is hard on them. I also didn't appreciate the cheesy ECO light coming on and going off all the time. The negligible increase in MPG from VCM operation hardly warrants an "ECO" light. I'll be comparing my pre-muzzled MPG to my post-muzzled MPG this weekend on a trip to SC and I'll be surprised if there is any difference.