1st Gen Haltech ECU Discussion

I'm pretty sure you can set up failsafe conditions in a WB DTC can't you?

 

yeah you can have everything richen up if you wanted to, kinda like stock does

 

Yep, just double checked. Lots of options for safety. I wouldn't worry about a WB failure if you set this right @betterbuckleup

 

Wow I'm surprised this wasn't turned on in my tune. Thanks for bringing that to my attention. That should bring some peace of mind for if a wb failure were to happen

 

You do need to set the severity level in the Sensors section as well, just as a heads up

 

Not sure if anyone's been thinking about how to pass OBDII-based emissions tests with larger injectors yet (w/o removing them), but all that should require is a properly sized resistor shunted across the GR-R and BR-W wires of the MAF sensor, and a bit of time/driving for the factory ECU to hit the OBDII emissions readiness checks.Then you can just leave it soldered since we obviously don't use it for any other purpose.



Functionally it drops MAF voltage so factory ECU thinks less air is coming in and drops the injector pulses accordingly.






also I think the way SNP calibrated the intake temp sensor is asymptotically wrong (the ends should curve opposite the way they do)

 

Does the boomslang still pass MAF data to the OEM ECU?

 

I think you may just end up with a MAF code unless your injectors are a very modest increase in size (<35% or so). They expect a certain amount of flow at idle (and probably other points) to not trip the maf code

 

Maybe, depends what level it determines a short is

 

idk? You have to remove the PnP harness in this case anyway - returning to factory

 

Wonder if you could use a varistor to adjust until you're within o2 trimmable range and avoid the short circuit MAF logic.

 

That's essentially what I'm proposing

 

Thought it might be nice to test the theory with it running on the haltech but watching the O2 and Inj duty logging on the OBDII as you adjust the resistor values

 

Ah true, yep. I'm pretty sure it goes through because I don't have the P0100

 

"Combustion Vibration" makes it sound exotic and desirable haha

 

I was going to wire the Haltech to the OBDII port and not have the stock ECU producing a CIL (snip wire to stock ECU and wire to Haltech instead)?

Wouldn't this just spoof whatever reader they hook up to it?

I think it's possible, why else would this exist:
https://www.haltech.com/product/ht-135000-haltech-elite-can-cable/

 

We all have the haltech hooked to our check engine lights as well. But the Haltech OBDII output is only good for regular data stream... temps, pressures... whatnot. It cannot create readiness monitors (or we haven't found a way to yet)

 

technically it's just not implemented "yet"

 

You know I never checked to see if it didn't just say "not equipped" instead of fail... maybe if they were all "not equipped" it would still pass since there were no fails?

 

Good question. I think it still has to report that they are not supported though