2012 Cruze Engine Tq Limits

[93turbo16]

I have been battling this 2012 Cruze for quite some time now and have really come to the point where I need to get some advice from an outside source.

I cannot for the life of me get the engine tq limits where I want them, there is always a cap on the maximum tq limit that I can't seem to get past.

What are the common tables that need to be modified to get these things to respond properly?

I have changed the desired driver demand table (anywhere from 150kw, all the way up to 300kw) (predicted engine tq responds fine) but I still get a max tq limit of ~180 ft/lbs even after raising the tq limit tables that I have access to.

I have multiple logs and the tune file that I can post if that will help.

I have also read through the E78 tuning article in the help section multiple times and still haven't come to any real conclusions on what exactly the car is doing.

[cobaltssoverbooster]

You should post your files anytime u ask a tune question you are experiencing. It will net the fastest help

[93turbo16]

You should post your files anytime u ask a tune question you are experiencing. It will net the fastest help

The issue there is that I have a ton of them from trying all kinds of various things to try to get this resolved.

I would think the logs would be the most beneficial, so I will put something together tonight.

BTW, I am not a tuning noob by any means.. I have been tuning for a living for nearly 10 years now and develop a Nissan tuning system called NismoTronic.

BUT with that being said, this new strategy and the lack of support for some of the newer ECUs leaves me with questions that the documentation does not give an answer to.

Here is something to get it started though, don't mind some of the values as I have changed a lot of things from stock to seem how they reacted and nothing that I changed really led to my desired result.

[snowvette]

http://www.hptuners.com/forum/showthread.php?t=32915
I've done most of the things in this thread and mine runs pretty good.

[Gh0st]

Post your tune please.

[REDNECKRACING]

one question. have you been running with the traction control on or off?? if its on that table might be limiting you. i am just starting to tune my cruze and am trying to learn as much as i can before i dig in. i am not used to the new e78 pcm. but i had that problem on a few older cars that i have tuned.

[Regalgse]

Try logging Immediate Engine Torque Cmd (IETC) . Mine seems to be exactly what my delivered engine torque is at any given time. My max delivered engine torque is around 170 lb-ft. (if you think the pid is a good reference)

[oldskool]

To the original poster, did you ever resolve the issue? I'm having the same kind of problem on mine - I've adjusted the tables as described in the thread referenced here (as described by Chris@HPT). I'm stuck at 17 psi and max about 175 ftlbs engine torque. I've gone as high as 250kpa max boost limit and nothing seems to work

[Tre-Cool]

the 1.6lt turbo version of the cruze also seems to have a hidden toque limit at 280nm aswell.

i primarily use efilive to tune it, but downloaded the tune with hpt to make sure i wasnt missing anything in the cals and it seems its pretty much same/same.

[dertobi]

I made lots of 1.6T so far...never had an issue with it.
but be careful what you do, these engines blow rapidly when they see more than 320Nm with the stock rods and pistons, in germany we have them since the first Opel Corsa OPC came out, i think it was 2006-2007 or so
also every tiny knock can have very dramatic consequences on this engine.

[Tre-Cool]

Do they run the same ecu in the Opel's? I thought they ran a bosch unit until just recently.

[dertobi]

they run bosch in the Corsa and Astra H, Astra J and all the others are Delco.
in china they also have the 1.6T in the Malibu