Are dual AEM 30-0333 WB possible ?

[NJ_Phil]

Already have a 30-0333 and want to run dual WB but saw a few posts on EFIlive forum that mentioned the 30-0334 was needed but that might only be for EFIlive.

I can get a good deal on a 30-0333 but want to make sure I can run 2 of them in HPT. If not, what do I need?


EDIT: Can I also connect the second OBDII gauge to the back of the 1st gauge inside my pillar rather than run 2 individual cables to by OBDII port under the dash?


Thanks

[dr.mike]

OK...

1. For HPTuners, there is no difference between a 30-0333 and 30-0334. The 30-0334 has added code to allow dual widebands in EFILive. So, if you can get a deal on 30-0333, and, you are not going to use EFILive, you are good. There is a youtube video, showing how to set up dual 30-0333s in HPTuners.

https://www.youtube.com/watch?v=MvO2Urchn3c

https://www.youtube.com/watch?v=ozJz-pNFCuo




2. You can connect the CANH and CANL wires of each gauge together and use only one OBDII cable.

[NJ_Phil]

OK...

1. For HPTuners, there is no difference between a 30-0333 and 30-0334. The 30-0334 has added code to allow dual widebands in EFILive. So, if you can get a deal on 30-0333, and, you are not going to use EFILive, you are good. There is a youtube video, showing how to set up dual 30-0333s in HPTuners.

https://www.youtube.com/watch?v=MvO2Urchn3c

https://www.youtube.com/watch?v=ozJz-pNFCuo




2. You can connect the CANH and CANL wires of each gauge together and use only one OBDII cable.

Excellent Mike.

Thank You very much

[GHuggins]

NJ_Phil - this is how I've got my scanner setup using two of the AEM 30-0333's...
On a sidenote Dr.Mike - Is it possible to have one wideband Teed into the back of the other wideband - would you only need to solder into the can network wiring? I would assume so since it's just a can network, but you never can tell with these things sometimes...

[dr.mike]

Yes, each gauge needs its own power. But you can join the CANH and CANL wires from the harnesses together, and use a single OBDII connection. Just to be clear, do NOT connect the CANH lines to the CANL lines. H to H L to L

[GHuggins]

So what your saying is make sure you don't wire the high speed CAN network to the low speed CAN network and watch the whole car go dead

I've always been a little hesitant on wiring them together just simply because sometimes the scanner doesn't work right and requires removing and re-adding them back one at a time... Think that's been fixed in recent updates though, so hopefully shouldn't be anything to worry about now?

Thanks Mike

[NJ_Phil]

So what your saying is make sure you don't wire the high speed CAN network to the low speed CAN network and watch the whole car go dead

I've always been a little hesitant on wiring them together just simply because sometimes the scanner doesn't work right and requires removing and re-adding them back one at a time... Think that's been fixed in recent updates though, so hopefully shouldn't be anything to worry about now?

Thanks Mike

I tied my CAN+ and CAN- together on my 30-0333 and 30-0311 in the pillar pod and could never connect with the scanner or tuner. Had to put a separate power switch to keep power from the 30-0311 when the tuner/scanner was connected. Can't tell you how many time I thought the pillar wiring was done and had to rip it apart again. I'll test dual WBs before mounting it up again this time

pillar_sm.jpg

[GHuggins]

I only use my setup for tuning multiple vehicles. I wound up purchasing a 12 inch long obd2 extension cable so I can loop all of my different cables right up and over the steering column. Keeps everything out of the way this way. I know exactly what you mean on the other. Nothing more irritating than putting everything together perfectly then having to rip it all back apart for something stupid most of the time.

[dr.mike]

The 30-0311 is a scanner, itself. So, it will conflict with the MPVI. Since it doesn't have a pass-thru OBDII connector, it assumes that it is the only scanner. But... there MAY be a way around power switching. At power-up time, if you hold down both buttons, I think it will go into bootloader mode. This will keep it from acting as a scanner, until the next power cycle.

[NJ_Phil]

The 30-0311 is a scanner, itself. So, it will conflict with the MPVI. Since it doesn't have a pass-thru OBDII connector, it assumes that it is the only scanner. But... there MAY be a way around power switching. At power-up time, if you hold down both buttons, I think it will go into bootloader mode. This will keep it from acting as a scanner, until the next power cycle.

Got my dual widebands running and thanks for the support,

As for the 30-0311. Doesn't CAN support multiple masters and have collision detection built into the hardware layer?. I can first connect with HPT and start scanning, then powerup the 0311....but then HPT starts dropping channels or just hangs. Not sure if it's possible for the 311 to build a PID list on powerup, then only poll whatever channel is up on the display. Just guessing, but it seems the 311 just loops and polls as many PIDS as possible, as fast as possible and shuts down channels in HPT.

AEM makes super nice stuff but I'm pretty disappointed with the 311. Not only for the conflicts with HPT but even most common PIDS like IAT and ECT aren't available. Maybe there is a firmware update for it since I bought it the 1st week it came out but it's pretty much useless other than for clearing DTCs. Not such a big deal since the pillar is full and no place to put it anyway.

[dr.mike]

IIRC the 30-0311 scans all of the channels that it maintains peak/recall values for. Not,m just the currently displayed value. In 11-bit OBDII mode, multiple CAN master/scanners cause confusion. I think that's why the 30-0311 doesn't some with a pass-thu connector.