2012 Cruze E78 Rev Limiter Question

[SBELGIO]

I'm running a 2012 Chevy Cruze 1.4 turbocharged EcoTech in a sand rail. I'm using an E78 controller with the 2012 OEM calibration. Operating system number 12646746. I can't get the engine to rev past the hidden 4000 rpm rev limiter. The system is code free no reduced power mode is indicated. however at 4000 Rpm the throttle closes to 30% and will not allow anything above that Rpm. Has anyone run up against this and if so can you tell me what I am missing. Do I need to start with a different base calibration that uses a different operating system? Any advise or help would be greatly appreciated.
STEVE SBELGIO ECLIPSE ENGINEERING

[kangsta]

Post your tune file. What transmission?

[SBELGIO]

The calibration is for a six speed manual transmission, the sand rail uses a volkswagen trans axle. I am not currently supplying any speed signal to the controller

[slammed39]

I'm guessing you're using an auto calibration. There's a transmission default torque table that is used if communication with transmission controller is lost. It's usually set to negative torque numbers above 4k rpm. I don't think efilive has it available to edit. Swapping to a manual cal should fix, and would solve idle issues you'll have if trying to use an auto cal.

[SBELGIO]

No i am using a 6 speed manual transmission base calibration

[slammed39]

No i am using a 6 speed manual transmission base calibration

Possibly the lack of speed input and clutch position is causing it to default to that table. Seems the manual cal would work. You could try to get efilive to add the table, hptuners has it. It's not an issue for anyone but us motor swapping folks.

[SBELGIO]

I contacted hp tuners and they said that they did not support this operating system, perhaps i need to contact them again. I attempted to simulate the clutch pedal input however i can not get the controller to recognize the input

[slammed39]

I contacted hp tuners and they said that they did not support this operating system, perhaps i need to contact them again. I attempted to simulate the clutch pedal input however i can not get the controller to recognize the input

You'll need one of the 0-5v sensors to make the clutch input work, but its not really needed if you can modify this table. There's a lot more parameters that pertain to standalone engine use in the other guys software, I'm pretty sure your cal is now supported. I have an e39 LEA 2.4l running standalone with an auto cal behind a t56, so I've figured out all the tricks the hard way...

[joecar]

Post your tune file.

[SBELGIO]

I am using a 0-5 volt reference ; as for the support as of yesterday they said no on this operating system

[SBELGIO]

Here is the file

[kangsta]

What error codes do you have when the engine is running? I suspect it is lack of VSS signal

[GMPX]

I'll modify your tune and repost.
But as others have said, it is because it is missing (a) comms with the TCM for an auto, or (b) missing the speed sensor signal for a manual.

[SBELGIO]

No code pressent

[GMPX]

Try this tune

[SBELGIO]

Thanks i will load it in and report back thank you

[SBELGIO]

Sorry , i can note load this file ; it comes back as can note use this version calibration with this software. I am using a v-2 flash scan and all my software and firm ware are up to current date, i believe. What am i missing.

[GMPX]

Ah, sorry, I am running the version posted here:
http://forum.efilive.com/showthread.php?23338-Update-Oct-16-2013

If you update to that you will be able to open the file I posted (and all your old ones too).

[SBELGIO]

I just wanted to report back the results. The modifications that you made worked just fine. The engine runs up to the appropriate rev limiter and performs very well for a stock tune. Now i can complete the tune work thanks to your fix to my base calibration. I am assuming that you will incorporate this address in future updates. Once again thank you for the superior tuner customer support, my customer is very grateful as well.
Your loyal customer always,
steve sbelgio
eclipse engineering

[GMPX]

Thanks for letting us know Steve, yes of course the table will be added for future updates.

[koryenger]

16287
GMPX is there any way you can do the same to my tune??? Any help is much appreciated!

[GMPX]

See how this file goes.

Cheers,
Ross

Edit: File removed by request

[Kirker912]

Sorry for reviving an old post but I've got this same problem. I've got a 6.0L in an airboat with an E78 controller. It revs to about 3450 and then the throttle drops to about 30% and it just stays there. Can someone give me a hand with this file? Or tell me how to go about fixing it?
http://s000.tinyupload.com/index.php?file_id=23370505175332184542

I've beat my head against the wall for hours now and nothing will get it above 3450ish.