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Quick Details

  • Brand Name: MAGNUM Tuning
  • Additional Service: Wholese distributors welcome
  • Place of Origin: Hungary
  • Delivery: Worldwide
  • Warranty: 10 years
  • Model Number: CTZS-335/7

Packaging & Delivery

Packaging Details In bubble wrapped envelope, shipped as a gift
Delivery Time 1-20 days depending on volume


MAGNUM O2 Sensor Simulator is an indispensable tuning device by engines where catalytic converter was removed from the exhaust.

MAGNUM O2 Sensor Simulator is an indispensable tuning device by engines where catalytic converter was removed from exhaust system. Missing of catalytic converter indicates polluted exhaust gas to the ECU, therefore check engine light will flash for a while or illuminate all the time, resulting medium level performance at the wheels. Simulator is a plug-in replacement installed to the sole - or in case of multiple o2 sensor system - to secondary O2 sensor. It supplies perfect voltage signal for the ECU, as if the catalytic converter would be in place and purify the exhaust gas. With MAGNUM Simulator you will get rid of suffering error signal on the dash, accordingly you can restore the power was limited by ECU due to check engine light, besides our tool is fully adjustable, allowing the user to adjust the most powerful volt range is yet accepted by the ECU.

Oxygen O2 sensor simulator is an adjustable unit and fits to all engines with 1,2,3,4 wire zirconia Oxygen Sensor.


The oxygen sensor simulator is not street legal in some states and countries. Please check the relevant local laws.


  1. Stops check engine light illumination
  2. Fully adjustable performance range
  3. 10-minute easy installation
  4. Performance difference up to 15 %.
  5. Available to all vehicle (cars, trucks, SUV's, motorcycles, heavy duty's)
  6. Vehicle specific
  7. Stop loss of performance due to catalytic converter removal
  8. Adjustable heater simulator integrated
  9. O2 sensor can be fully removed from the exhaust
  10. O2 sensor replacement bolt available
  11. Euro design with mirror finished stainless cover
  12. Power indicator led with special purple color
  13. Sealed waterproof facture
  14. 10 year manufacturer warranty
  15. OPERATION OF MAGNUM Oxygen Sensor Simulator / Eliminator

Injected gasoline engines fitted with Electronic Control Unit (ECU) or alias Electronic Control Management (ECM) have oxygen sensor or oxygen sensors to measure the amount of oxygen contained in the exhaust gas.

These sensor(s) deliver voltage to the ECU according to the actual consistence of air fuel mixture. When someone removes the catalytic converter(s) these signal coming from the o2 sensor(s) will be out of the allowed range and the occurrence will result error code in the ECU.

The device is an oscillating signal generator with proper frequency tuned to the specified vehicle and with adjustable voltage to trick the ECU. Signals are quick enough and 'jumping' in the correct volt range accepted by the ECU.

 By models where heated O2 sensor(s) are installed (3,4, wire versions) ECU monitors the resistance of heater circuit, integrated in these O2 sensors therefore we built a heater simulator into this unit.

You have the choice to use this feature or not, but it is highly recommended to apply it.


Magnum Oxygen Sensor Simulator outperforms all solutions aimed to trick the ECU oxygen sensor input signal and will deliver +10 % additional HP in contrast to those models where check engine light illuminates due to catalytic converter removal or because of the presence of free flow exhaust.

This unit outperforms other solutions do not include the outstanding adjustable heater simulator panel.

Magnum O2 sensor simulator / eliminator offers adjustment to set the optimal air fuel ratio yet accepted by the ECU.


Installation is easy and universal for each model.

Easy steps

1. Cut the harness of oxygen sensor.

2. See colors & operations of each wire in car wiring diagram or search for your combination in table below.

3. Connect the proper wires with terminals or solder them in place. (Hydrochloric acid recommended by soldering.)

4. Contact red wire to ignition +12V and ground the black wire to the chassis or battery negative terminal.

In case of multiple o2 sensors the unit must be wired up to the post sensor after the removed catalytic converter.


This performance chip module is compatible with all gasoline vehicles controlled by ECU and fitted with 1,2,3 or 4 wire zirconia O2 sensor. Not sure fits to your application? Feel free to contact us.


  • stops check engine light illumination
  • restore factory performance and more... up to 15%
  • can rich air fuel ratio until ultimate point yet accepted by ECU
  • O2 sensor can be removed completely


  • Stop check engine light illumination
  • Fully adjustable performance range
  • 10-minute easy installation
  • Performance difference up to 15 %.
  • available to all vehicle (cars, trucks, SUV's, motorcycles, heavy duty's)
  • Vehicle specific
  • Stop loss of performance due to catalytic converter removal
  • Adjustable heater simulator integrated
  • O2 sensor can be fully removed from the exhaust
  • O2 sensor replacement bolt available
  • Euro design with mirror finished stainless cover
  • Power indicator led with special purple color
  • Sealed waterproof facture
  • 10 year manufacturer warranty

Technical Specs

  • Effect time:  immediate
  • Switch: can be connected - not included
  • Facture:  plastic body melted by epoxy resin
  • chrome polished cover
  • Model range:  aspirated non-turbo engines, turbo engines, supercharged engines, petrol engines, diesel engines, LPG engines (with factory ECU)
  • Installation:  easy, no special tools, skill required
  • Wiring:  directly to sole or post oxygen sensor's plug, universal 
  • Required skill:  minimal - localization of O2 sensor, basic electronic contacting of wires and terminals
  • Warranty: 10 years


  1. O2 sensor simulator
  2. 4 pcs. pre-insulation terminal
  3. 4 pcs. insulation tube
  4. 1 pc. heat protection tubing
  5. 1 pc. gasket
  6. 2 pcs. SS self locking nut
  7. installation guide

Company description

Magnum Tuning has been dealing with manufacture of ECU upgrades and performance parts since 1994. Our experience warrants peak performance, reliability & perfect style.

Claims stated in this description are warranted by Magnum Tuning.



USD 69.99 $ with worldwide shipping
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