1999+ 3400 Performance Computer

  • Click to enlarge
  • Click to enlarge
  • Click to enlarge
1999+ 3400 Performance Computer

Tap for gallery

5.0 average, based on 1 reviews


Product Information

Our performance computers are based on dyno testing and street testing, giving the best possible tune for those than take care of their vehicle.  Improved spark and fueling based on application/octane, and improved shift points and line pressure adjustments for the 4T45 and 4T65 equipped engines.  Coolant turn on times set closer to the thermostat to keep the engine temperature more consistent as well.  We offer emissions delete for racing, and speedo corrections for aftermarket wheels.  We can also change the tune for some modifications, so give us a call or use our contact form for any questions regarding our tuning capabilities.

We no longer use a core system, and most of our customer prefer to keep their stock computer left alone.  You can send us your stock computer, a compatible computer, or have us source one for you.  If we are sourcing the computer, we will need to know both the VIN, and the SERV# on your stock computer.  If you are sending a computer that is not original to the vehicle, please make sure the SERV matches your original and give us the VIN off your car.  You can add a note with your order, email us at sales@wot-tech.com, or call 574-968-7607 to give us more information on your setup.

Some fields are text input rather than a drop down box.  "Stock" is an acceptable input if you don't want something changed.  If you want the fans to turn on after the car is shut down, please tell us what coolant temp to activate, and how long you want them to run.  

    We are asked for "exact changes" quite a bit.  We do not share specifics, but the list below will give you a better indication of what to expect. 

    Spark based on fuel octane to be used.
    Power Enrichment fuel increased (heavy acceleration and full throttle)
    PE delay removed
    Knock Decay modified to give spark back faster once knock has taken it away
    Torque Management modified or removed.  Traction Control option left alone
    Fuel and Spark RPM Limiter modfied based on shift points and application
    VATS Delete - REQUIRED if not your original computer

    Shift RPM based on cam
    Line pressure increase - Firmer Shifts
    TCC Apply/Release fixed to stop "searching" at low speed

    Fans set based on thermostat
    option to run fans after shutoff for x seconds at y temp
    Speed limiter
    RPM limiter in Park/Neutral, and In Gear

    Engine Codes

    Race Car/Off Road use only

    Rear O2 Delete
    EGR Delete
    Cat Delete
    Evap Delete
    Fuel Level Sensor Delete

    List of cars we support


    • 00-05 Impala 3.4
    • 97-05 Monte Carlo  3.4


    • 99-04 Alero 3.4


    • 99-05 Grand Am 3.4
    Product CodeWOT34OBD2

    Customer Reviews

    Average Rating: 5

    Tuning God

    Highly recommend it…could tell the difference on start up Rickey Wright (Feb 27 2022, 05:05 am)
    Write a review

    Write Review

    Please enter a valid email address.
    This field is required.

    Follow Us

    Mailing List

    Enter your e-mail address to receive our newsletter
    Please enter a valid email address.
    Email address already subscribed. Continue if you wish to unsubscribe.

    eCommerce by CubeCart