Acurazine.com
S-VCM Controller
(le français suit)
This is a novel and advanced tool for deactivating VCM in Honda and Acura vehicles. Unlike other products (VCMuzzler, VCMTuner, MaxiLink, VCM Suppressor...) it does not rely on a fixed or manually adjusted resistor or potentiometer to alter coolant sensor reading.
The S-VCM Controller is an automobile grade, high precision digital tool with automatic logic control. It is programmed to reliably deactivate VCM 100% of the time, while constantly monitoring the actual coolant temperature to ensure that it is safe to disable VCM.
The S-VCM Controller is far more superior than the resistor-based tools, because it is Smarter, Safer and Solid.
SMARTER – No need to swap or manually adjust resistors. The S-VCM Controller will always reliably disable VCM in summer and winter, regardless where you live, Florida or Alaska.
The ability to deactivate VCM 100% of the time is a key performance criterion. Every time when VCM switches on/off, the vehicle makes a lot of adjustments such as the ignition timing, throttles position and turns the torque converter lock-up on and off. All these busy mechanical and electronic switching have an impact on the car, and the extra stress on the engine mount is unavoidable regardless how VCM technology improves – all of which are what a VCM deactivation device is supposed to prevent.
Especially when you are driving in frequent stop-and-go traffic, VCM turns on and off more frequently than when driving freely on the highway. But busy stop-and-go traffic is where resistor tools cannot keep up. Those tools cannot reliably disable VCM when coolant temperature approaches 205F, allowing the VCM/ECO mode to come back when your car needs it disabled most, unless they use a larger resistor, but that will further compromise the engine temperature warning system - see below.
The S-VCM Controller does a much better job, because it keeps VCM off in slow and stop-go traffic when the VCM/ECO mode tends to be flashing on/off most frequently. Once it is installed, you can simply forget it. In fact you might forget your car has VCM completely, because there will be no need to adjust resistor and you will not see the ECO light even once, unless ... see the safety features.
SAFER – Automatically restores true temperature reading to the onboard computer and on the dash without tampering with the cooling system, in case your car’s engine overheats.
This unique feature of S-VCM Controller is very important for your car:
If your car's engine overheats, you should know and be warned immediately. All other products will fool you as if the engine did not overheat, because the resistor is always plugged in there to reduce sensor reading, and the coolant temperature will show just 215F even when the engine has overheated to 270F (when a 82ohm resistor is added) – see photo 2 for more test data. A resistor product will cause your car computer to always get a false engine temperature, and that will result in it being unable to react properly when the engine overheats. Should this happen, it is dangerous and could harm your car.
SUPERIOR DESIGN AND QUALITY – The design follows automobile grade industry standards, and the component quality meets or exceeds the requirement. It has been fully lab tested in a very wide ambient temperature range of 240F.
The compact design of S-VCM Controller also provides the benefit of very quick and easy installation. It does not need many unnecessary straps and avoids cluttering the engine bay. The package comes with a detailed yet easy-to-follow installation guide (unplug ECT1 harness, plug in S-VCM, and connect power wire).
SOLID BUILD – There is no movable parts such as additional connectors or a removable/adjustable resistor that is more easily subject to damage. The S-VCM Controller is completely sealed from shock, water and corrosion. It cannot be damaged even you soak it in boiling salt water. The solid insulation is rated for temperatures as high as 300F, with extreme resistance to harsh chemicals (brine, acids, bases), and has an indefinite service life. At the same time, it is RoHS compliant.
WARRANTY – It is so solid that the S-VCM Controller is backed with a confident six-month warranty in the very unlikely event it stops to perform as described (excluding damages due to physical abuse). No other similar product offers this for what you pay.
SMARTER AND SAFER TO THE BOTTOM LINE! – When a resistor tool fails while you are driving, your car's engine will be in trouble because the faulty resistor cannot remove itself to let the car's onboard computer get the correct coolant temperature. The S-VCM Controller is different – even if it fails its design ensures that it would quit as if it is not installed.
See also Frequently Asked Questions below.
Fits all vehicles using the Honda V6 cylinder 3.5L SOHC engine with variable cylinder management
Honda and Acura trucks, minivans and cars of new and older years models:
• Honda Odyssey, 2005 and later
• Honda Pilot, 2006 and later
• Honda Ridgeline, 2017, 2018 - (fits G2 Ridgelines with staged charging regulation).
• Honda/Accord Crosstour, 2010 and later
• Honda Accord with V6, 2005 and later
• Acura MDX, 2014 and later
• Acura RDX, 2013 and later
• Acura RLX, 2014 and later
• Acura TLX, 2015 and later
• Acura TL, 2009-2014
• ... As long as your vehicle has a Honda 3.5Litre V6 SOHC engine with VCM.
Do you want to cancel VCM? Are you considering a tool that uses a resistor/potentiometer to stop VCM?
You should seriously consider the S-VCM Controller for its advantages: it is safer, more reliable, and backed with product warranty.
This innovative product offers the best performance value, and more importantly peace of mind for its reliability and safety features.
No need to remember, find, swap parts from time to time. Install once and for all - LESS IS MORE!
Order details, shipping and transfer of goods title:
On check-out, please leave a message about the model and year of the vehicle. This ensures what you receive will fit.
Important: Your order cannot be shipped until this information is received.
By placing an order, you agree that the transfer of title occurs when the product is shipped, so the sale occurs in Canada; therefore, no sales tax needs to be charged to US customers.
Default shipping to US is Canada Post packets by air or (the commercial express arm of Canada Post).
Making the S-VCM Controller available does not mean to ask or decide for you to disable VCM. You are responsible for the consequences of using any VCM disabling tool.
FAQ
What is the extra wire for?
It connects to car battery positive (+). The wire has a ring terminal at the end so it can be securely attached to the bolt on the battery post. You do not need to find a switch power source in your vehicle. The device uses no more than 8mA electricity. To your truck, this is negligible. In comparison, it's only a fraction of the standby power the vehicle uses to be able to respond to your remote key.
The heat resistant wire is 3KV (3000V) rated and will remain flexible in the extreme cold weather of Canada.
Does it function by adding resistance to the coolant sensor?
No. A fixed resistor is insufficient and misleading.
The resistor method is rough, because the resistance needed to prevent VCM is different at for example 200F than 185F. At 200F the resistance of the coolant sensor is about 190 ohm, as compared to 246 ohm at 185F (based on a test sensor). To prevent VCM by keeping temp. reading below 167F, the needed additional resistance would also be different. You could use one size – the bigger resistor – to try to fit all, but it will then be over or under rated when coolant temperature changes.
Adding a fixed resistor is also misleading because a given/fixed resistance means differently at different temperature levels. From 167F to 176F (temperature change = 9 degrees) the sensor resistance is reduced by more than 40 ohm, but from 203F to 212F (temperature change = 9 degrees) coolant sensor resistance only reduces by less than 30 ohm. Lab tests show that at the higher temperature range, Honda coolant sensor is extremely sensitive – a decrease/increase of 66 ohm in resistance equals a whopping increase/decrease of coolant temperature from 240F to 305F – that is a 65 degrees difference!
When a 82 or 120 ohm resistor is added, it significantly distorts the temperature reading the ECU gets (which may not be a problem when engine temperature is normal). But this effect badly falters coolant temperature warning when the engine overheats. An 82 ohm resistor is reducing way more than 15 degrees on your dash and what the ECU gets when the engine is overheating, and with a 120 ohm resistor added on top of the coolant sensor the ECU will never get a reading above 230F even when engine coolant is steaming at 250F, 300F or even 500F, because by definition when the sensor circuit resistance is at 120 ohm, the ECU gets a temp. reading of 230F, and a 120 ohm resistor makes it impossible to go below that resistance. The result is that on the dash, you will never know even when the engine is already red hot. That is very dangerous and should absolutely be avoided (someone may think the chance of engine overheating is low, but I don’t want to take the chance). The temperature gauge is on the dash for a reason, and there are common causes for the engine to overheat – coolant level too low, radiator fan stopped working, overload while towing uphill … It’s there for you to keep an eye on the engine temperature, so don’t let go of it for deactivating VCM.
Will ECO/VCM occasionally come back?
This is typical of resistor based tools. The reason, as some explained, is that when the engine heats up in stop and go traffic, the coolant temps climb a bit, then VCM may activate. Occasionally creeping above 167F in heavy traffic is expected with resistor based tools, especially on hot days. There are also mentions that climate can play a role and how this may affect the choice of resistors. One product uses a potentiometer to try to accommodate a wide variation in seasonal temperatures.
In S-VCM Controller, the principle of signal moderation is completely different and unaffected by driving conditions. You can count on it to continuously disable VCM in crawling traffic even on hot days.
How does the S-VCM Controller work?
It monitors coolant temperature on ECT#1, and feeds a compensated signal to ECU (higher temperatures yield lower signal readings). The compensation is not a constant, because on the one hand it should be sufficient to keep the reading below 167F (so VCM does not activate) while the actual coolant temperature fluctuates in driving (the coolant sensor’s resistance changes as well); and on the other hand it should allow the gauge on your dash to show temperature fluctuations between 120F - 210F while you are driving.
Most importantly, the compensation is cancelled when S-VCM Controller detects engine overheating, so you can see it on the dash and the ECU can do whatever necessary in response to the true coolant temperature.
Why does it release control when engine overheats? Wouldn’t ECT #2 deal with overheat situations?
ECT #2 will do its part of the job, but it cannot replace ECT#1 on which the VCM deactivation mechanism is being applied. Tests on a few Honda/Acura vehicles showed that when ECT#1 temp. reading alone is increased to a certain level, the radiator cooling fan kicks in – regardless of the reading on ECT#2. This means that the ECU also relies on ECT#1 to respond to coolant temperature changes. What else uses ECT#1 reading? I do not know, because I am not Honda and did not program for the software logics in all their vehicles, besides they can update their software versions. I don’t think anyone can be sure of all those programmed logics for dealing with engine overheating at different temperature levels (unless he works for Honda). Simply let the ECU handle engine overheating.
The S-VCM Controller is designed to be effective and precisely on target. The design concept is to control and minimize the impact on the whole cooling system while delivering the required function, and interfere with factory settings as little as possible.
Will installing S-VCM Controller cause damage to my car?
No. The principle followed in designing it is to maximize the protection for your car in deactivating VCM.
Is the more sophisticated S-VCM Controller less reliable than resistor-based tools?
Reliability is determined by a number of factors. A modern vehicle has many thousands of electronic and electrical components. That number increased exponentially over time, yet the overall reliability also became higher than the cars decades ago. To reliably perform, the system must work within designed parameters and avoid deviation from normal performance specs. For example, adding non-adaptive resistance to the temp sensing circuit is something to avoid especially when the engine operates at relatively high temperature ranges. The S-VCM controller follows the principle of minimal interference introduced into the vehicle and employs a graceful fallout mechanism. Its fault tolerance ability is significantly higher than the in-line resistor configuration. By design, the S-VCM is more reliable than resistor-based tools, both during normal temperature engine operation and in dealing with extreme situations.
Another important factor is build quality (which also varies between the 4 or 5 resistor-based tools found in the market). In S-VCM, only solid state components are used; moving or removable parts are completely avoided. The service life of the used materials is indefinite. The physical and electrical ratings, such as temperature and voltage, are scientifically calculated and adequately met (the heat resistant wire is rated for 3000 V and will remain flexible in the extreme cold weather of Canada).
The S-VCM Contoller is as reliable as the controlling electronics in your vehicle.
Is the S-VCM Controller a pilot model?
The product you receive is a stable version of the S-VCM Controller, which has been fully tested to deliver the promised performance.
But this does not mean there are no other versions (for different and new vehicle models) or it will not be modified in future. All electronic products evolve over time, and the S-VCM is no exception. Satisfied users continue to provide feedback and suggestions for additional features and improvements. All that will help to make the future S-VCM Controller even better.
Is it normal that a check engine and/or VSA warning appears after installing the S-VCM Controller?
Usually this won't happen, but it could occur in some cases (to VCM deactivation tools of any sort, because they all modify coolant temperature sensor readings). You can either clear the code if you know how and are sure that is the only cause, or simply drive a few days and it should disappear.
Do I need to remove S-VCM before doing an idle relearn?
No, there is no need to remove it. Just disconnect its power wire, and you can do the idle relearn while leaving the controller in place.
Can you ship expedited?
Yes, this is possible upon request and before the product has been dispatched.
Default shipping to US is via Canada Post packets by air. Transit time is also affected by US customs processing, besides transportation. International packages to US destinations are first handled by Canada Post, then US Postal Services. eBay does not show tracking via Purolator (the commercial express arm of Canada Post), but you can find transit status on the website: .
If you need expedited or to use another freight service, please contact immediately following your order. Please note that if you request for expedited shipping, those options are more expensive and the additional cost will be covered by the buyer.
For more information: You are welcome to send me a message if you are interested in more details and how it works to deliver better performance.
Thank you for your interest !
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