Has anyone figured this out yet? I am looking to add a flex fuel sensor on my 2009 CTS-V.

 

They haven't used a sensor since 2006 it's a virtual pcm calculation

 

Yes but where do you get the signal from. Thats what my question is.

 

It's all done in the pcm. If the operating system in your car doesn't have all the required tables to enable it through tuning then you would have to switch to one that does.

 

In order to wire in and get the flex fuel sensor to work I need to know which E67 ECU pinout will read the sensor frequency and duty cycle and apply it to the tables. EFI has these tables.

 

What part of there is no sensor it's a virtual calculation don't you understand?

 

Don't think you get it.....

 

Try pin BR-549.

 

 

For those that need the info it was released today.
C1 Pin 5


Flame I am still yet to understand wtf you talking about

 

In factory built flex fuel cars and trucks GM has not used an alcohol content sensor since 2005. Now we both learned something new today. I saw Dstecks post on hp tuners about adding the sensor.

http://www.hptuners.com/forum/showth...l=1#post278909

 

EFIlive has the option in the software to use the virtual e85 OR a sensor on the newer E38 and E67 PCM's but you need to know what pin to connect the sensor too.

 

So does HPT.

 

The sensor is pretty nice "and finally cheap", and it is very easy to put in line right back where the supercharger line goes in. The custom os is easy to implement as well, just open up the tune, and go to the custom os tab and hit apply, then do a full flash and read it back out. It works very well.

 

I wish I could figure out a way to have a 2bar COS with the E85 tables and sensor active in my 0411 PCM

 

Ya I got everything I needed for $119.00 shipped. Sensor, harness, 6an fittings. But the damn harness is on back order everywhere!

 

C1Pin5 that info is out. I made a post on efilive and lsxworks posted it.

 

If you want that done, I can set up things to make it happen, I have done it before and it works 100%

 

Yes! Yes! YES! lol. I do very much want to do it! I have the GM sensor already and could plumb it on my return side of my fuel system. Truck is currently tuned SD with COS3. Let me know what I need to do or send you Jesse.

Truck is the 01 in my sig, dynoed it last Saturday on 15psi of boost and made 730rwhp on pump 93 and meth. Would really love to be running E85!

 

More to come!