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TszFung

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Posts posted by TszFung

  1. Requirement for a Stock 4age 16v with ITB intake?

    in G4x

    Posted

    Do you mean I have to give a little gas if I don’t have the idle control valve?

    when cold start, I have 600rpm and less then 10.5 a/f gauge reading , I have to rev the engine to 1100rpm to get 13.0 a/f. Is it possible to reach 1100rpm itself without giving gas and valve? Is it too rich on cold start idle? My ignition timing is 10°, 14.7 a/f and 850rpm when it reach 85°c, quite good and smooth when warm idle

  2. Requirement for a Stock 4age 16v with ITB intake?

    in G4x

    Posted

    On 5/2/2023 at 6:12 PM, DerekAE86 said:

    Do you plan to run a Idle Control Valve along with the ITBs? It can be done without it but it's just a little more fiddly.
    And are you going to use the factory Ignitor and Distributor or are you converting to Coil on Plug?

    Luckily the AE86 and 4AGE is a very simple setup. But my suggestions would be:
    Replace the factory Narrowband Oxygen sensor with a Wideband sensor. If you use a CAN (Like the Link CAN Lambda) sensor it will free up an analog input on the AtomX.
    Also add an Intake Air Temp sensor near the ITBs, or in the airbox if you plan to run the ITBs inside a airbox.
    And a Fuel Pressure sensor so you can take full advantage of modelled fueling control.

    The AtomX only has 2 digital inputs - so it just depends what you would like to prioritize for them:
    You can connect your A/C button (or clutch activation signal) to one input so the ECU knows when Aircon is on.
    Or you can connect the transmission speed signal from the guage cluster to an input so the ECU knows how fast you're travelling.
    Another option is to install a knock sensor.

    You can use the factory Water Temp sensor, Throttle Position Sensor and Trigger wires (But I would suggest using the CAS from a 4AGZE if you plan to run COPs)
    The ECU has a MAP sensor built into it so you can remove the factory MAP sensor - and no need to use the AFM from the ITBs (If you got them from a Silvertop)
    If you have the standard clutch fan on the water pump pulley there is no need to add electric thermofans - but you can if you'd like extra control and cooling capacity.

    If you keep the factory distributor and ignitor the factory tacho will still work - however if you convert to COPs you'll have to either modify your guage cluster tacho to accept the lower voltage signal being output by the ECU or add a "tacho booster" to amplify the ECU's tacho signal to something the factory gauge cluster can read.

    Sorry but how to run the idle control without the idle valve ? Since I want to deal with cold start and a/c on idling

  8. Requirement for a Stock 4age 16v with ITB intake?

    in G4x

    Posted

    First of all , sorry for my bad english:unsure:

    I have a AE86 with stock 4age 16v also stock ecu and put on the itb intake already.

    And now on i am planning to use link ecu atomx to replace the stock one for correcting the data only.

    i just want to run better for itb.

    But i am confusing what do i need , so can you please help me:(

    My 86 spec:

    1983 zenki apexi trueno, with air-con, power steering , itb, then every thing stock!

    Thankyou very much!

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