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92-93 Honda Prelude S 2.2L RacingChip P12 ecm

92-93 Honda Prelude S 2.2L RacingChip P12 ecm

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Warranty: 12 months

Ships until: 1 business day*

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This is a high performance Chip for either Manual or Automatic transmission cars (Non-Turbo). This will fit 1992 through 1993 SOHC, Non-VTEC models. 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 8000 RPMs
  • Speed governor was eliminated to allow the vehicle reach its maximum natural speed.

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 P12 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. Do I need any other electronic part, like capacitors (C51 and C52), Resistor (R54), another smaller chip (74HC373) and a jumper (J1) for installing this chip? If yes, is it included?

A. No. Those parts are needed on Honda Civic / Integra OBD-I ecus, like the P28 and P06, but are NOT needed for these OBD-I Accord / Prelude ecus.

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:

37820-P12-Ax1   OR   37820-P12-Lx1

Also, since there are a few "flavors" of this ecu out there, the only way to make sure that this chip will work on your ecu, is by opening the ecu top cover and looking on its circuit for a 28-Pin chip (14 leads on each side), with the markings "M38256AP", made by "OKI". That is the stock ROM of your ecu. On that same chip, there is another two-characters number in big print. If the number is "A9", then this chip is for you!!! Please refer to the picture bellow for help on this

Power ROM :: Feel the Power!!! - Honda Prelude P12 Performance Chip

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.

Customer Reviews:
Displaying 1 to 2 (of 2 reviews)

Rick Schuwerk

"great chip....i feel a big difference in power....++++++"

Rating: 5  of  5  Stars [5 of 5 Stars]

Ivars Sudniks

"A+++ Excellent shipping time!! Great company!!"

Rating: 5  of  5  Stars [5 of 5 Stars]

Displaying 1 to 2 (of 2 reviews)