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Deep Scarlet Pearl *2019 Elite AWD*
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Discussion Starter #1
I have been using the VCM Tuner II since January and have no complaints whatsoever with it's performance. But, I have been wanting at certain times (long road trips) when I'd like to have it deactivated and back to normal VCM ability for higher gas mileage. Running the included ground wire to ground will negate it's operation. So I decided to have a switch on the dash where I could turn the ground on or off. In a separate post (Firewall Access) I asked if anyone knew of an easy way to breech the firewall and Dude CS posted the instructions to the lighted running boards. I planned on going that route when I noticed an even easier way. Upon removing the kick plate the hood release cable gave the perfect route for the 18 gauge ground wire. Whats good about this is it keeps the wire out of the weather and makes for a clean and neat installation. I used insulated spade lugs plus a mount for the module so all could be easily removed before taking the vehicle in for service at the dealership so the need arise.
 

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Deep Scarlet Pearl *2019 Elite AWD*
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265 Posts
Discussion Starter #3
Looks great- nice work. Is there a way to tell if it's on or off?
Switch button out = VCM on
Switch button in = VCM off
 

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VCM = variable cylinder management, is a Honda feature.
When the radiator fluid reaches a certain temperature, the Honda's ECU will deactivate 2 cylinders, turning the v6 engine into a 4 cylinder, for improved mpg.
When this happens I can feel a mild clunk and installing the VCMii Muzzler will cause the improved mpg to go away and allow the engine to use all 6 cylinders all of the time.
The VCMii Muzzler needs to be installed on a cold engine, but can be turned on/off by connecting its green wire to ground, via a on/off switch, in the OP's example.
Honda's VCM system works great, on the Interstate, but offers too many clunks when driving in the city, for me.
$120 VCM Tuner vcm ii muzzler for 3.5L Honda older than 2007
 
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VCM = variable cylinder management, is a Honda feature.
When the radiator fluid reaches a certain temperature, the Honda's ECU will deactivate 2 cylinders, turning the v6 engine into a 4 cylinder, for improved mpg.
When this happens I can feel a mild clunk and installing the VCMii Muzzler will cause the improved mpg to go away and allow the engine to use all 6 cylinders all of the time.
The VCMii Muzzler needs to be installed on a cold engine, but can be turned on/off by connecting its green wire to ground, via a on/off switch, in the OP's example.
Honda's VCM system works great, on the Interstate, but offers too many clunks when driving in the city, for me.
$120 VCM Tuner vcm ii muzzler for 3.5L Honda older than 2007
Thank you
 
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