DBWX2 Drive By Wire Throttle controller for Megasquirt 3 or standalone

DBWX2 Drive By Wire Throttle controller for Megasquirt 3 or standalone

DBWX2 Drive By Wire Throttle controller for Megasquirt

Product category: 

Price 429,00 € (VAT. 24%)

Temporarily out of stock

Out of stock currently and component availability problems causes delays in delivery.  Ask for lead time before ordering!

Drive by Wire controller for Megasquirt 3 and Megasquirt 3 based ECUs.  Controls 2 thottle bodies or throttle body and fully electronic boost control. 

The DBWX2 Controller communicates with MS3 via CAN and therefore you can get all DBW based strategies done with ECU, which are available in firmware. Calibration is also done by familiar Tunerstudio and it´s very simple. DBW Calibrations and tuning can be done straightly Through MS3. But it can also be used as a standalone unit, for example with carburettors!

User Manual

NOTE! Read the legal disclaimer from below!

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What is drive by wire?

Drive by wire throttle control is a technique that all modern engines use. Driver does not directly control the throttle butterlfy opening in a drive by wire enabled engine. Instead the ECU will decide how much the throttle butterfly will be opened depending on programming.

That sounds dangerous. Is it safe?

DBWX2 controller has dual processors onboard that monitor the pedal and throttlebody. If a fault is detected throttle buttefly will power off and close. Also the controller unit has an output that can be used to shut down engine. An argument could be made that a correcly installed dbw system is safer than conventional cable throttle where you are in for the ride if the throttle cable gets stuck.

Can I use my old accelerator pedal?

It depends. It is possible to use a "cable throttle DBW potentiometer". This is essentially a redundant potentiometer mounted on a cable throttle system found in some hondas and PSA cars. The accelerator pedal and the DBW throttlebody both use redundant feedback signaling. There are two sensors in the pedal and throttlebody. This allows the controller match the position signals and determine error conditions.

Does this work with my Megasquirt ECU?

Yes! but only if you have a MegaSquirt3 or MS3 based ecu. DBWX2 controller will connect to these ecu's via CAN-bus.

I see a mention of boost actuator control. Does this controller work as boost controller also?

DBWX2 does not have a actual boost controller. Instead the electronic boost actuator control works by mapping the actuator position to the boost dutycycle CAN-bus message received from the ECU. So you use the ECU's boost controller as usual, and the DBWX2 will look for the CAN messages to control the electronic boost actuator position.


- 2 H-Bridges with 10A output. 

- Built in advanced safety features

- Individual PID control strategy for each channel. 

- Freely configurable CAN-bus communication that enables possibilities found only in premium priced systems. 

- Possibilities include Twincharging (SC & Turbo) bypass valve control, Intake trumpet lenght control, SuperCharger bypass valve control... Anything that is operated with a H-bridge

- Tuning and calibration with Tunerstudio MS can be done either by MS3 connected to laptop or by it´s own USB port. Depending on use.

- Full CAN bus compability wit Megasquirt 3 -based products.

- Molex connectors and sealed casing allows under hood install. (USB port must be protected with cap included!)


(Especially for U.S markets)





This installation is not for the tuning novice! Use this system with EXTREME caution! The DBWX2-contoller includes several safety features, but using it without fully understanding the risks is strictly NOT ALLOWED by us. Despite several safety features, misuse or improper tuning of this product can cause damage or accident!

If you are not well versed in engine behavior and the tuning of engine management systems, or DBW system, DO NOT attempt the installation.

NOTE: All supplied DBWX2 calibrations and other tuning information are offered as potential starting points only.


Protoparts Oy OR the manufacturer holds no responsibility for any damage that results from the misuse or mistuning of this product!

Shipping costs

Pick up from local Finnish post office
6,90 €
DHL Express Suomi
15,00 €
EMS Express Worldwide
39,00 €
Parcel will be delivered to receivers home adress, after possible customs handling. International Express Mail service, handled by local mail companies around the world.

Your order can be shipped with these shipping methods.

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Terms and conditions

Webstore owner and contact information:

Location: FINLAND, EU

Protoparts Oy
Paypal: info@protoparts.fi
VAT: FI28405755
Yrittäjäntie 7, 60800 Ilmajoki

+358-400-561 992

We sell products worldwide to private persons and businesses. Prices shown in shop is normally included by Finnish VAT 24% (Exception: some unique custom products, when it is separately mentioned). Right for price changes and delivery costs/methods are reserved for us.

Price in shop is always based in EUR (€). The shop will convert the price to desired currency, but the price in receipt/invoice is always EUR. Depending on payment method, currency may, and will vary due to provider´s own policies. In some cases, real amount can be slight bigger. That is because provider, not us (for example Paypal). We are not responsible from these fees/currency conversions.


Customers outside EU: You don´t have to pay VAT, price is corrected at checkout procedure, when you have given your country!

Also with valid European union VAT-number, companies can purchase without VAT as VAT 0 % (Intra-Community transport). This is enabled automatically at checkout process


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When placing an order, it is then assumed that you have read and understood all terms and conditions and you are accepting those current terms.

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Payment methods are: 

- Paypal (Credit- and debitcards and Paybal balance) 

- Postal office prepayment (only in Finland)

- Klarna Checkout, which includes: (only in Finland, Sweden, Norway, Germany)


*Partial payment

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*Internet Bank transfer.

By giving your information at checkout, you accept Klarna AB:s (Klarna AB, Sveavägen 46, 111 34 Stockholm) terms and conditions. By pressing "Buy now" -buttona, you will accept also Protoparts terms and conditions.

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When we have received an order, we immediately send confirmation to you, which includes your order information. ALWAYS CHECK content of order confirmation and please make immediate contact to us, if you find something is wrong or you have questions. Save the confirmation if you come in need to contact us. When contacting, pleas tell us your Name, customer number (if available) and number of order. And when receiving delivery, please make sure that contents match with confirmation and receipt/invoice.

Contact information:

Protoparts Oy
Paypal: info@protoparts.fi
VAT: FI28405755
Yrittäjäntie 7, 60800 Ilmajoki

+358-400-561 992

Delivery methods and -costs

Delivery costs includes postage and packing expenses. Actual costs is found when you place and order and choose your preferred payment- and delivery method. Available methods are depending on product, weight, measures and receivers country. Shop only shows methods, which are possible for that current order.

Our current logistic partners are DHL and Finnish post "Posti" (International delivery also).

Maximum single package weight is 30kgs, after that it is special Multi package delivery and we contact for delivery price.

Customers outside European Union and customs declaration:

If your delivery address is outside of EU, you may have to pay import duties and taxes, which are assigned once a shipment reaches your country by customs. You must meet any additional charges for customs clearance. Please note customs policies vary widely from country to country. We recommend you contact your local customs office for further information. International shipments may be subject to cross-border inspections by customs authorities. We are not responsible for ANY customs declaration fees.

Customer outside EU can order Tax Free from us, Checkout will automatically reduce Finnish VAT off, so price will be 24% cheaper, than price, which includes VAT.

About reducing declared value to reduce customs fees:

Note that we cannot change the value of shipments in order to reduce customs duties. The modification of commercial invoice is against the law and we kindly ask understanding: Please do not ask us to reduce shipping value. We will not do it.


Delivery times

Our most common delivery time inside Finland is approx 2-3 days from order, inside Europe about a week, depending on Postal service. Mainly, stocked and ready items will be sent as soon as possible, about 24h from order. Unusual delivery time is mentioned in product specs and if there is some delay from some reason, we will contact you via Email.

Please note: Ready Megasquirt ECUs and wiring harnesses almost every time needs some customization, so these are delivered usually within a week from order. Our staff will contact in this case.


Right of withdrawal

You have the right to cancel this agreement within 14 days without giving any reason. The withdrawal period ends within 14 days starting from the day you received the last shipment, or in the case of downloadable products, from the moment you received the order.

In order to exercise the right of withdrawal, you must notify us of your decision to cancel the agreement in an unambiguous way (for example, by mail or by email). You can also use our printable return form, but its use is not mandatory.

To comply with the deadline for withdrawal, it is sufficient that you submit your notice of cancellation before the end of the withdrawal period.

Effects of withdrawal

If you withdraw from this contract, we shall reimburse to you all payments received from you, including the costs of delivery (with the exception of the supplementary costs resulting from your choice of a type of delivery other than the least expensive type of standard delivery offered by us), without undue delay and in any event not later than 14 days from the day on which we are informed about your decision to withdraw from this contract. We will carry out such reimbursement using the same means of payment as you used for the initial transaction, unless you have expressly agreed otherwise; in any event, you will not incur any fees as a result of such reimbursement.

You must return the goods without delay and no later than 14 days after informing us about your decision to withdraw from the contract. The deadline is met if you send back the goods before the period of 14 days has expired.

You are only responsible for the kind of value decrease of the goods that did not result from treatment that is required for determining the nature, properties and functionality of the goods.

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Unpaying or no picking up delivery is NOT considered as legal return or cancellation. 

In this case we hold the right to ask you for payment for delivery cost IN BOTH DIRECTIONS. Invoice is sent to receiver.

Problems in delivery

If delivery is lost or damaged in transit or somehow it is not what you expected, please make contact ASAP. In that case, contact MUST be made within 14 days from receiving it. Contact must be made with email or letter. Attach some photos of the damaged products to the mail.

If the package is clearly damaged in transit, receiver must make an reservation/claim to transit company you have chosen to deliver, BEFORE receiving it.