Hey guys, I am trying to use MPS_UTECLogger 3.0 with my utec+AEM wideband, and I was just curious if there was any instructions for how to make the connector from AEM wideband to Serial port.

Thanks a lot for the help.

 

It's in the instructions that come with the AEM. I believe it is the blue wire that you need to connect to the computer. You need to get a female DB9 connector from someplace like Radioshack and connect the blue wire to either pin 2 or 3 (I can never remember). You then need to connect ground to pin 5. Plug the new serial cable in to your serial port and you are good to go!

 

I wish I had taken a picture of how I had mine set up on the car for a while. It was really ghetto, but it logged perfectly with the MPS and UTEC. I had to use a Serial to USB connector with a Female to Female serial connected to that. If you install it like KPierson said it should work fine.

 

How accurate will that datalogging be? I'm curious, since I'm running an AEM UEGO also, but will be installing this UTEC wideband tuner for my datalogging...

 

It's as accurate as the guage itself is. The AEM UEGO outputs its value as an ascii string, so there is no signal conditioning.

 

OK the way i do it. i connect the blue wire from the AEM UEGO to pin 2 at the DB9 connector on the laptop and i use a usb to serial to connect the UTEC since i have one serial port at my laptop. the problem is when i connect both of them the usb to serial will freak out and stop working i think it needs some kind of a setting or driver. other wise the software is working fine with the laptop serial port.

 

I didn't have any luck using a converter with my laptop (it would blue screen when I tried to use both ports at the same time).

So, I switched my Utec to USB and kept the AEM as a serial device. Problem solved.

 

Thanks for the ideal .

 

Alright im going to do this tommorow, ive been putting it off for too long. Im a bit confused to connecting a ground to pin #5. Do I just run a seperate wire from pin 5 to a ground?

Thank you Kpierson for your help.

 

You can run it to ground, but I just ran it to the widebands ground. In a car, ground is ground, whether you connect it directly to the battery, chassis, or another ground wire.

 

Currently my wideband is grounded to the chassis. Are you saying I should remove it from the chassis and ground it via pin #5? or are you saying I should get another wire, tap it in to the wideband ground wire and put it pin 5..

 

Get another wire and tap it to your existing ground.

If you remove the chassis ground the wideband won't work at all!

 

^_^ i didnt know if it somehow tapped into the utecs ground. Wiring = not my forte. Thanks again Kpierson!

 

hmm so i finally got around to it tonight... I took a male - female straight through de9 cable that came with my utec (i use the usb cable) and cut the male end off, but I cant seem to figure out what color wires go to pin 2 and 5.. I cut the male end up trying to see what wire leads to what pin but demolished it with no real results lol.. are all de9 the same colors corrosponding to the pins?

I found this (http://www.kryslix.com/nsfaq/Q.4.html) so... is red ground and yellow recieve data?

(I dont have a soldering iron so this is the easiest way to do it for me)

Help would be greatly appreciated!

Aaron

 

Attachment 185248

In case this helps...

 

hmmmm... thanks for that but now im more confused lol... i am about 95% sure the #5 is red on this particular cable i cut up due to my investigating lol...

 

Sorry about that...It's a pic from my old UEGO instruction book...I didn't even realize I still had it--maybe it's outdated...if I recall, I downloaded it--long ago--from AEM.

 

i checked the online version and it seems the instructions are the same as the ones you posted... hmmm... probably db9(de9) cables havent changed so those instructions must be valid... but according to the site I found (http://www.kryslix.com/nsfaq/Q.4.html) that combination doesnt make sense.

 

There is no standard for db9 colors. The only way to figure it out is with an ohm meter.

 

you would be better off just buying the connector at radio suck and solder it properly.