Sluggonaut
Goblin Guru
- Sluggonaut Goblin Guru
Thanks for clarifying.
-
We've upgraded and reskinned the forum. Notice something off? Email us at [email protected] and we'll fix it.
V1 Engine wiring questions
Rauq
Goblin Guru
- Rauq Goblin Guru
This discussion has been going on in a few different places, so my apologies if I'm restating something here.
I believe LNF cars have the option to run the AEM wideband that connects with a passthrough OBD2 connector, but I don't think this works on an LSJ (requires a CAN PCM)
On an LSJ, to get wideband data into HP Tuners, you either have to have the Pro interface with the 0-5v inputs on the side of it, go through the AC, or use a standalone serial interface and then pull the data into HP Tuners. I don't have any experience with that last option.
With either the Pro interface or going through the AC pressure sensor signal wire, the input is likely going to come from the wideband gauge (which is also the controller in most setups), not the sensor itself, at least for every setup I've seen. So if you're going the AC input route, that wire needs to be run forwards from the engine harness.
Both the Pro interface and the AC input allow HP Tuners to pull wideband data live from the PCM which reduces any error from the timing of data being off. If you go to the pro interface, the interface either has to live in the car, or the 0-5v signal wire from the wideband controller has to get removed and taped off to remove the HP Tuners interface module. If you input through the AC signal wire, you can just unplug the OBD2 connector of the HP Tuners module to remove it from the car. The 0-5v output from the wideband gauge stays connected to the AC pressure signal input wire which is connected to the PCM.
For what it's worth, I have the HP Tuners Pro interface, and I have connected through the AC input.
Sorry if it seems like I've been hitting on this topic a lot lately- everyone should build their car the way they want, but this is an easy topic for me to advocate. I think it's well worth the effort to set up this way.
I believe LNF cars have the option to run the AEM wideband that connects with a passthrough OBD2 connector, but I don't think this works on an LSJ (requires a CAN PCM)
On an LSJ, to get wideband data into HP Tuners, you either have to have the Pro interface with the 0-5v inputs on the side of it, go through the AC, or use a standalone serial interface and then pull the data into HP Tuners. I don't have any experience with that last option.
With either the Pro interface or going through the AC pressure sensor signal wire, the input is likely going to come from the wideband gauge (which is also the controller in most setups), not the sensor itself, at least for every setup I've seen. So if you're going the AC input route, that wire needs to be run forwards from the engine harness.
Both the Pro interface and the AC input allow HP Tuners to pull wideband data live from the PCM which reduces any error from the timing of data being off. If you go to the pro interface, the interface either has to live in the car, or the 0-5v signal wire from the wideband controller has to get removed and taped off to remove the HP Tuners interface module. If you input through the AC signal wire, you can just unplug the OBD2 connector of the HP Tuners module to remove it from the car. The 0-5v output from the wideband gauge stays connected to the AC pressure signal input wire which is connected to the PCM.
For what it's worth, I have the HP Tuners Pro interface, and I have connected through the AC input.
Sorry if it seems like I've been hitting on this topic a lot lately- everyone should build their car the way they want, but this is an easy topic for me to advocate. I think it's well worth the effort to set up this way.
- Gtstorey Goblin Guru
You definitely have done more research on this than I have since the LNF and have the stock wideband. I have seen list that included the 05 cobalt having a CAN network (same as GMLAN, I think) but that may be due to the inexact definitions of some of these terms as used by different OEMs(or maybe its just a straight mistake).
SECTION ‘X’ CONTENTS (aeswave.com)
SECTION ‘X’ CONTENTS (aeswave.com)
