JDM PROm Performance Chip Module

JDM ProM Performance Chip Module Appearance

JDM PROm Performance Chip Module

From our Analysis:

From our research and review, it is our opinion that the JDM PROm Performance Chip Module Works! You will DEFINITELY want to try this!


Company Profile

The manufacturer is a company called JDM Performance. They are based in the USA and have been in the tuning market for several years, giving them more weight than previously reviewed products.

Their website, performancechiptuning.comjdmperformancechip.com or eBay.

The JDM PROm Performance Chip Module offers this and several other versions of their OBD and other performance products. The direct product page is here:


The case and design are unique, so it will be interesting to see what this chip actually does. 

From the jdmperformancechip.com website:

“JDM PRO Chips remap the timing of the ignition to give you greater throttle response. These mapping specifications will optimize performance increase fuel economy and deliver maximum horsepower otherwise restricted by factory settings. Our microprocessor controlled tuning Chips contain engine-specific dynamic “maps” that are placed in the unit’s memory. The “maps” are all dynamometer tested and proven to give a very noticeable increase in performance. This intelligent feature gives the unit the ability to work in sync with your engine, providing economy or power depending on your driving requirements..”


The cost on the website at the time of this review was $289.99 USD for the JDM PROm Performance Chip Module, and $199.95 on eBay, which claims to provide enhanced pickup, power, and engine performance enhancements.

This price is a bit higher than any chip we have reviewed so far. Hopefully, it warrants better performance than most of the previous chips.

Product Appearance


The JDM ProM chip comes in two versions, the blue version, and the white version with a flexible OBD cable for fitment to the OBD port.

Installation steps were fairly straightforward:

“Step 1: Locate your OBD2 port.

Step 2: Insert stage 1 into your vehicle’s port while the vehicle is in off position.

Step 3: Insert vehicle key and turn the vehicle switch one position (or press your start button) without starting the vehicle. Your dash gauges will turn on. The JDM PROm Performance Chip Module needs about 5-10 seconds in this stage to transmit data from your vehicle’s ECU. After 10 seconds, you can start the vehicle normally.

Step 4: Once your vehicle is started for the first time, the JDM PROm Performance Chip Module begins a learning process. This process involves gathering data from your onboard computer and transmitting overrides to your ECU for performance and fuel economy improvements. Results can take up to 2 weeks of normal driving to fully complete. ”

Sounds more believable than most previous modules we tested

– Let’s see if it works.

Internal Analysis

First, the board shape itself is unique. – we see a much more complex circuit board than most of the performance chips-  A large IC with a JDM-USA Rev. 6.0 label on it and a voltage regulator.


First of all, we see the 4-pin ISP single road for programming – it suggests the chip is programmed before assembly, which means it’s custom programmed for a specific vehicle. it has a 20mhz Resonator which is more accurate than the lower cost internal oscillators so it cannot be another light scam chip.


The large IC chip is of primary interest to us.  The chip may seem to be physically larger than any we have seen so far in our reviews and after doing several tests such as Program Memory type, CAN protocol, Program Max Memory Size, and Max CPU Speed after all test have made we determine the Chip installed it’s a JDM/Microchip version of the PIC18F4580 (CAN Bus and CAN FD Bus ) with 32KB of Programming Memory verified through our lab tests.


We examined the OBD connections from the connector to the circuit board and the following nine pins are connected: 2,4,5,6,7,10,14,15,16.

Let’s  check the OBD protocols and which pins they require:


From this chart, we see the following protocols and which pins must be present for them to be used:

CAN – 4, 6, 14, 16

PWM -2, 4, 5, 10, 16

VPW – 2, 4, 5, 16

ISO – 4, 5, 7, 16

So we can conclude from this that the JDM PROm Performance Chip Module:

HAS all OBD connections to the CAN protocol

HAS all OBD connections for the PWM protocol

HAS all OBD connections for the ISO protocol

HAS all OBD connections for the VPW protocol

From these connections, the JDM PROm Performance Chip Module does have the capability to interface to any of these protocols. According to the product information, the company claims it is custom programmed for use with only one vehicle. For use on another vehicle, it must be reprogrammed.


We connected the JDM PROm Performance Chip Module to our BMW 3 Series 2003 3.0L as instructed and the lights came on as expected:

For about 1 week we drove a few miles and did notice a definite improvement in throttle response and pick up power and extra torque. In addition, the idle and overall handling of the engine did seem to be smoother. We tested in a large run and noticed we had gained almost 2MPG on fuel economy.

JDM ProM Performance Chip Module Lights
JDM ProM Performance Chip Module Lights


It is clear from our analysis so far that the JDM PROm Performance Chip Module is capable of delivering real gains and is a good choice for those seeking a general tuning solution.

Company Response

We sent the following message to the company before completing this review and received this response.

Our message to the company:


We are an automotive performance chip review group and saw your performance chip listing. We have a few questions about your product:

1) Can you assure us this is not a scam?
2) Do you have any real-world proof?

Company’s response:

JDM ProM email response
JDM ProM email response

We did receive this prompt response and they provided many references for proof of their product’s vehicle enhancement. We are impressed with the straightforward answers they provided.


From our research and review, it is our opinion that the JDM PROm Performance Chip Module Works! You will DEFINITELY want to try this

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