Wideband gauge options for single sensor

[Ju1cE]

Good Vems Community,

I did a little searching and had a hard time find any info so I fear that it is a rookie mistake and not desirable... is there a way to drive an aftermarket wideband controller (such as the AEM unit sitting on my shelf) with a signal from the sensor that is connected to my ECM?

Or is a 2nd sensor the best/ most logical answer? 

Thanks

[VEMS]

Hello Ju1ce,

Sharing a wideband sensor between ECM and external gauge is not supported. For a narrow band sensor it will most likely work.

Best regards, Dave

[Ju1cE]

Dave,

Thanks for the reply...yesterday I ordered the VEMS serial display (http://vems.us/round_disp).  In the future look for a post asking if I can run parallel serial connections to a laptop and the gauge...but will probably just take less time to make a cable and test when my gauge arrive :)

[gunni]

It can work as the gauge is just a reciever while the laptop and ecu are both recievers and transmitters.

this way you can also have bluetooth coms while having a round gauge wired as well.

[Ju1cE]

Hey gunni,

Thanks for the heads up!  Gauge is scheduled to arrive on Saturday and new boost controller was installed last night...now if I can only get my laptop fixed between now and then....

[NOTORIOUS VR]

It can work as the gauge is just a reciever while the laptop and ecu are both recievers and transmitters.

this way you can also have bluetooth coms while having a round gauge wired as well.

Are you sure about that?

The Gauge commands the ECU send in AIM data stream, where the laptop connection is not AIM but rather serial data.

BT + laptop might work though, have you tried this?

[Ju1cE]

Haven't tried yet...new ssd HD for tuning laptop is still in the "capable hands" of the usps.

I will update this thread once tested...maybe Dave will chime in before I have a chance...

[gunni]

It can work as the gauge is just a reciever while the laptop and ecu are both recievers and transmitters.

this way you can also have bluetooth coms while having a round gauge wired as well.

Are you sure about that?

The Gauge commands the ECU send in AIM data stream, where the laptop connection is not AIM but rather serial data.

BT + laptop might work though, have you tried this?

You can tell Vemstune to use AIM.
Last car I tested that had bluetooth and round gauge on serial and a tablet and the round both worked.
Now I´m doubting if round and Laptop worked.

[VEMS]

Hello Guys,

I'll try to clear things up:

Hardware wise

* on the display only round connect the RX and GND lines only
* tuning laptop and v3 should have all three connected.

Usage

* when VT is talking to v3, it will disable aim steam, but it will be re-enabled on ecu power cycle (or optionally from VT on closing), display only round will not show data (or perhaps bogus) when VT is connected
* when VT is not used, aim stream data will be interpreted by the display only round, it does not send data.

Best regards, Dave

[NOTORIOUS VR]

You can tell Vemstune to use AIM.
Last car I tested that had bluetooth and round gauge on serial and a tablet and the round both worked.
Now I´m doubting if round and Laptop worked.

Well that is very cool... I might just have to try that (BT + AIM Gauge)

It would really be nice if the hardware/firmware guys activated the 2nd serial port in the ECU though  :D