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Installing uart on non eprom ecu

Posted by Robert4416, Jul 7, 2020

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  1. Robert4416

    Robert4416 Probationary Member

    1
    0
    Joined Jul 7, 2020
    houston, Texas
    Not sure if I'm posting to the right thread but I just got a 98 gsx with a bunch of work done to it my friend that gave me the car told me I need to get a haltec 1000 but that's a 1500 dollar ecu. But someone else told me I can solder something called a uart on my ecu that will allow me to tune the car but I need to find the RX tx and ground I have a non eprom ecu so my question is does anybody know where the RX tx and ground pins would be on the ecu
     
  2. Fyke

    Fyke Supporting VIP

    36
    21
    Joined Jun 8, 2013
    Englewood, Colorado
    I would highly recommend taking a look into DSM Link is the most common form of tuning for our vehicles http://www.ecmtuning.com/ They do offer socket service for non eprom ecus. They cannot socket 98-99 Ecus however.

    I do believe they are currently out of stock on 2G chips, but unless you are extremely skilled at soldering and circuit board work I would recommend them to do the whole job.
     

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    1997 Mitsubishi Eclipse GSX
    awd · automatic · 2G DSM

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    1997 Mitsubishi Eclipse GSX
    awd · automatic · 2G DSM

    282  4

    1995 Mitsubishi Eclipse GSX
    awd · manual · 2G DSM
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  3. jinscho

    jinscho Proven Member

    591
    244
    Joined Jun 16, 2017
    Bangor, Pennsylvania
    Umm.. does the 98 have the stock ECU still? Because if so, it's a flashable black box. You'll need a tactrix openport 2.0 cable and reflash adapter (can be had for less than $200 brand new), a copy of EvoScan for logging purposes ($30), ECUFlash ($Free.99), and CeddyMods which is also very inexpensive ($30 I believe for the FULL version with SD and Big Maps).

    Figure out what ECU is in the car currently, then make a plan from there.
     

    Street Build 2K  13

    1999 Mitsubishi Eclipse Spyder N/T
    fwd · manual · 2G DSM
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  4. steve

    steve DSM Wiseman

    13,505
    640
    Joined Feb 3, 2002
    Boulder, Colorado
    That someone doesn't know much about DSM ECU's. Most of them predate the availability of any reprogramming on the fly, the exception being the 98/99 black plastic version which is reflashable along the lines that jinscho mentioned. DSMLink modifies the factory EPROM ECU's to support modifying the various parameters and tables needed to tune your car..

    BTW, UART = Universal Asynchronous Receiver/Transmitter. A serial port. 1G's have one as part of the OBD1 diagnostic port and 2G's have one as part of the OBD 2 port.
     

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    2008 Audi TT 3.2 Quattro Roadster
    awd · manual · Misc Vehicles

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    2002 Audi TT Quattro Roadster 225
    awd · manual · Misc Vehicles

    89  2

    1992 Dodge Stealth RT/TT
    awd · manual · 3000GT/Stealth

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    1991 Mitsubishi Eclipse GSX
    manual · 1G DSM
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