Performance chips for OBD2 vehicles have become a popular aftermarket upgrade, promising enhanced engine performance and fuel efficiency. Among these, the GTE Stage1 Performance Chip module is one option car enthusiasts might consider. Let’s delve into an analysis of this module, examining its internal components and its compatibility with OBD2 protocols.
After opening the GTE Stage1 Performance Chip module, the internal circuit board reveals a level of complexity exceeding that of many basic performance chips. A notable feature is a button, which appears intended for programming or testing purposes, though inaccessible from the exterior casing.
The central Integrated Circuit (IC) is labeled JDM-USA Rev. 6.0. Through tests assessing Program Memory type, CAN protocol, Program Max Memory Size, and Max CPU Speed, analysis indicates that the chip is a JDM/Microchip variant of the PIC16F59. This version shows an upgraded Programming Memory capacity of 24KB and verified CAN Bus support, confirmed through laboratory testing. While relabeling by Microchip has been observed in other component sectors, such as video cards, our focus remains on the functionality of this specific chip in its automotive application.
The inclusion of a 4MHz Resonator is a significant detail. This component offers greater timing accuracy compared to the internal oscillators often found in less sophisticated performance chips, suggesting a design focused on more precise operation rather than being a rudimentary or deceptive product.
Based on the component analysis, the GTE Stage1 Performance Chip module exhibits characteristics that suggest it could potentially deliver on its performance enhancement claims.
Examining the OBD connections, the module utilizes nine pins from the OBD connector to the circuit board: pins 2, 4, 5, 6, 7, 10, 14, 15, and 16. To assess protocol compatibility, we refer to standard OBD protocol pin configurations.
Analyzing the pin connections against standard OBD-II protocols, we observe the following:
- CAN (Controller Area Network): Pins 4, 6, 14, and 16 are connected, fulfilling the pin requirements for CAN protocol.
- PWM (Pulse Width Modulation): Pins 2, 4, 5, 10, and 16 are connected, meeting the pin requirements for PWM protocol.
- VPW (Variable Pulse Width): Pins 2, 4, 5, and 16 are connected, satisfying the pin requirements for VPW protocol.
- ISO (International Organization for Standardization): Pins 4, 5, 7, and 16 are connected, fulfilling the pin requirements for ISO protocols.
Based on these connection points, the GTE Stage 1 Performance Chip Module demonstrates physical compatibility with all the listed OBD-II protocols: CAN, PWM, ISO, and VPW. According to the manufacturer’s information, the module is specifically programmed for individual vehicle applications and requires reprogramming for use in a different vehicle, suggesting a degree of customization in its software.
