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90-91 Acura Integra LS / GS Racing Chip PR4 ecm

90-91 Acura Integra LS / GS Racing Chip PR4 ecm

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Warranty: 12 months

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This is a high performance Chip for 90-91 Acura Integra GS /LS 1.8L. This chip will fit both Manual and Automatic Transmission vehicles. Included with this chip is the inserting socket and detailed installation instructions.

You will be surprised and satisfied with the results obtained as soon as you install this chip!!! It's time to unleash the power that is hidden under the hood of your vehicle!!!


  • Fuel and Ignition Tables were remapped and optimized for producing more horsepower and torque.
  • Revlimit (Red line) was raised up to 8500 RPMs

This chip will ONLY fit the following Honda ecu computers:


*** If your ecu number is not listed above, please use the search box at the top of this page. Enter your ecu number and click the "search" button to find the correct chip for your ecu.

At least US 91 Octane fuel (R+M/2), or Europe RON 95, must be used. This chip is NOT to be used on Turbo or any boosted application.

Power-ROM :: Unleash the Power!!! :: USDM PR4 Performance Chip

(Frequently Asked Questions)

Q. What are these chips and what they do?

A. These chips are memory devices called EPROM. They contain and hold the program that will be run in your car's computer. These chips, are modified on their program code so the engine can deliver more horsepower and torque than it currently would with the factory program.

Q. Are these chips vehicle or application specific?

A. Yes. They will only work with the models or applications listed here. Using otherwise, either won't work or might be unsafe.

Q. What other modifications are supported by this chip?

A. Any intake or exhaust modification will be wonderful using this chip. Modifications not recommended are fuel delivery modifications that either inject more or inject less fuel. Examples are; bigger or extra injectors, higher fuel rail pressure, turbo and nitro. On the other hand, thermal systems that does not inject or alter the air/fuel mixture (AFR), are welcome. An example of this is Cry02.

Q. How can I identify my computer?

A. To identify your computer (ecu), you must look at the computer's top cover label. The number should be similar to the following format:


Q. Where is the ecu located?

A. The ecu is located at the passenger site foot well, near the kick panel, beneath the carpet. Please, check the picture below for reference:

location of Honda ecu


All chips are guaranteed for one full year after transaction completion. Warranty will be voided if the item is damaged because of mishandling or any other external cause, like static electricity, wrong installation, been used in the incorrect application or ecu, been soldered directly and damaged by overheating or been used in any other way than intended.

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