Denso Iridium TT 100K miles in Odyssey
- Thread starter jayjr1105
- Start date
They look good 
In this context, muzzled means the VCM is disabled. The VCM cylinder deactivation in the Honda V6 is hard on the engine, hard on oil, hard on the expensive $600+ motor mounts, all for minimal to no fuel economy benefit. Because of this, most people with a VCM Honda choose to disable it, and the most popular product used to turn off the VCM is called VC Muzzler.
The later iterations of the Honda J35 V-6 engines have VCM technology which is Honda's version of cylinder deactivation. It is well documented that running active VCM will cause long term problems with the rear cylinder bank. As such, aftermarket companies have developed plug-in modules to shut off the cylinder deactivation function on J35 engines. This process is called "muzzling" the VCM, primarily due to one prominent brand named "VC Muzzler".
Looks like they could have gone longer. NGK for the win
Yes, you could have gone longer. It’s good information to have. Looks like the engine is running well.
@jayjr1105 I didn't think TT plugs went that far... Did the new plugs give you a boost in mileage, power, etc?
Thanks in advance!
Thanks in advance!
“Dont muzzle the ox while threshing”
I’ll just leave that one there.
On topic - looks like they could have certainly gone longer, but I’d be nervous leaving them in and start getting mighty curious around 60-70k. Truth be told, I’m not sure I’ve ever waiting 100k to change plugs. Seems too long.
I’ll just leave that one there.
On topic - looks like they could have certainly gone longer, but I’d be nervous leaving them in and start getting mighty curious around 60-70k. Truth be told, I’m not sure I’ve ever waiting 100k to change plugs. Seems too long.
Ehh, most J-Series motors just aren't that hard on plugs. My issue with leaving them in that long is that I've had some come out HARD. To the point I would swear the plug is either going to break off or the threads are coming with it. Oddly, once they're out, the new ones spin back in easily by hand. I've never had a head damaged.
I did stop using anti seize on them though.
Was removal easier once you stopped using anti seize??
100,000 miles in normal for Iridiums. It’s been like that for almost 20 years now.
Dunno, haven't tried yet. The Accord is up again pretty soon and that's the one that was hard. The Acura had the factory plugs in it when I got it and those came out like a breeze.
Put a muzzler on my DIL's 2016 Odyssey three years ago. It was running rough, using oil and threw a misfire code. Still running fine now with ~150K
Muzzler is an essential Honda J35 V6 accessory.
Muzzler is an essential Honda J35 V6 accessory.
These were Denso's
They are rated for 100K. Honestly no noticeable change yet but it's only been 2 days.
My Muzzler cost $0.10 in a 82ohm 1/2 watt resistor soldered in line with the sensor
