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  1. Sorry, we do not support the E46 because the OEM...

    Sorry, we do not support the E46 because the OEM ECU has internal igniters to drive the ignition coils. That means we cannot intercept the ignition signals to control ignition timing.
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    That’s great news, thanks for the update.

    That’s great news, thanks for the update.
  3. Sorry, we didn’t get notified about this post...

    Sorry, we didn’t get notified about this post earlier.

    Yes, the OEM ECU will richen the AFRs on cold start. I wouldn’t worry about it unless it is excessively rich. You need to tune any OBD2...
  4. O2 adjust and AFR Calibration are two different...

    O2 adjust and AFR Calibration are two different modes to achieve the same outcome, which is to fool the OEM ECU to think the AFRs are different in closed loop. O2 adjust is for the older narrowband...
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    That’s a bit strange. From memory MAPCAL expects...

    That’s a bit strange. From memory MAPCAL expects a minimum of 800x600 resolution. What version of Windows do you have and what is your screen resolution? You might have to set the menu bar to auto...
  6. From memory CLT compensation doesn’t work in MAF...

    From memory CLT compensation doesn’t work in MAF Intercept mode but will have to check. The OEM ECU is still doing CLT compensation remember.

    You cannot tee the MAPECU3 into the OEM knock...
  7. Gosh, it looks like we missed this one. The RPM...

    Gosh, it looks like we missed this one. The RPM input on the MAPECU is the white wire and i should be connected to the IGF signal. IGF is the OEM igniter feedback signal that provides a pulse every...
  8. The post about not cutting the sensor wires was...

    The post about not cutting the sensor wires was in response to beast_drc as he said he was going to cut the wires. Hope that clarifies the answer.

    You're welcome, hope it helps. Sorry we have...
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    Because you have converted from NA to forced...

    Because you have converted from NA to forced induction we would recommend MAF Intercept, MAP Y-Axis. That means the load input is MAP. There is no real disadvantage using the internal MAP sensor...
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    It depends on the mode. In MAF Eliminate mode...

    It depends on the mode. In MAF Eliminate mode you don't use a zero'ed out fuel table because the MAPECU is replacing the MAF sensor. MAF Intercept modes are different in that the MAF sensor is...
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    Sorry, we will have to look at that one and get...

    Sorry, we will have to look at that one and get back to you. We are not aware of an problem with mmHg.
  12. If the OEM ECU is OBD2 it will probably throw a...

    If the OEM ECU is OBD2 it will probably throw a CEL if you cut the sensor wires. Have you tried your plan already to see what happens?
  13. I believe we resolved this via email?

    I believe we resolved this via email?
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    No,you don’t need the MAPECU IAT sensor in MAF...

    No,you don’t need the MAPECU IAT sensor in MAF intercept mode because the OEM one is still there and working. You don’t want double IAT compensation.
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    The MAPECU3 does not have the required amplifier...

    The MAPECU3 does not have the required amplifier to process a knock sensor signal into something useful as it was a function added later rather than designed from the beginning. That means you do...
  16. Hi James, The injector size is a hard one as...

    Hi James,

    The injector size is a hard one as it depends on a number of factors, like fuel pressure as one example. It will probably be fine but we have to be conservative with our recommendations....
  17. Hi James, welcome and thank you for the detailed...

    Hi James, welcome and thank you for the detailed information about your vehicle.

    We have lots of 2JZGTE base tables tuned for different injector size upgrades but 1JZGTE ones are thin on the...
  18. I can only assume you manual is incorrect for...

    I can only assume you manual is incorrect for some reason. The fragment I posted was from the MKIV Supra repair manual and we have been using that diagram for many years. The order is important for...
  19. Hi Tim, Apologies for the delay responding, we...

    Hi Tim,

    Apologies for the delay responding, we are in COVID-19 lockdown and we are closed.

    The different ignition pinout labels is interesting as it is the first time we have been told that. ...
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    Hi Tim, Apologies for the delay responding, we...

    Hi Tim,

    Apologies for the delay responding, we are in COVID-19 lockdown and we are closed.

    Yes, wire the Analog #1 input the same as the MAF input wiring.

    MAPCAL3 was written to detect...
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    MAF Intercept mode means the MAPECU3 only...

    MAF Intercept mode means the MAPECU3 only intercepts the MAF signal and the 494 zone fuel table is configured to allow voltage adjustments, both positive (more fuel) and negative (less fuel). You...
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    Apologies for the delay responding, we are in...

    Apologies for the delay responding, we are in complete lockdown due to COVID-19 which means all non-essential businesses are closed. :(

    Anyway, are you referring to this wiring diagram on the...
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    Thanks, that is the latest software and a new...

    Thanks, that is the latest software and a new MAPECU3 with the latest MAP sensor. I believe the logging is in psi rather than inHg so -15psi should cover -30inHg, will have to check. Can you please...
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    I'm not sure they there is a discrepancy. I seem...

    I'm not sure they there is a discrepancy. I seem to recall a bug that was fixed a long time ago that was similar.
    What version of MAPCAL are you using?
    What pressure scale do you have...
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    Welcome! You are 100% correct, you can zero...

    Welcome!

    You are 100% correct, you can zero the primary fuel table for normal running and then tune the secondary fuel table for off roading and richer AFR's. It may also be useful to adjust...
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