Lozic ECU + TCU + AWD Tune

[STINGER]

What about the LAP3 tune, it has been tested in the US by them and seems to work fine.

 

[cncBilly]

What about the LAP3 tune, it has been tested in the US by them and seems to work fine.

Read this thread.
3.3TT - Stinger Misfire

 

[rbjohnson78]

The jb4 is a really awesome tuning option. It integrates into the CANbus through the obd2 and allows data logging. Then the tuning part has predefined maps specifically for the stinger. It is essentially a cobb tuner without directly flashing the ecu. I like the jb4 more than cobb.

Cool! I already have a JB4

 

[STINGER]

Read this thread.
3.3TT - Stinger Misfire

I didn't go through the whole thing, but I believe he has the Lap3 piggyback not the tune.

 

[Htcdroid03]

anyone have any updates from lozic or had any adjustments made yet? On the 1.5 bar I run 93+ 100 %meth and see a constant 2.3 pull across the board, never any less and usually more. Thinking about dropping to the 1.3 bar tune with a few adjustments to smooth out the power delivery and using the JB4 for additional "track day" power increments.

 

[Williamsj41]

anyone have any updates from lozic or had any adjustments made yet? On the 1.5 bar I run 93+ 100 %meth and see a constant 2.3 pull across the board, never any less and usually more. Thinking about dropping to the 1.3 bar tune with a few adjustments to smooth out the power delivery and using the JB4 for additional "track day" power increments.

I should have specified the other stinger running meth had the 1.7 bar tune. Looks like you are the only other stinger at the moment with 1.5 bar. Lozic did say he could do some adjustments to run E10-E30. I have not sent it back for a refresh to try. I am assuming with meth you have not had any issues of it getting worse between 1/2 and 1/4 tank of gas and lower.

 

[Team Tonka]

I believe there are at least a couple running 93oct and 1.5 bar?

 

[Slip_Angle]

From what I understand there are a few Stingers running 1.5bar and a few G70s as well. In terms of the 2.3 degrees of timing, I've seen this with the 1.3bar as well. Lozic didn't think it was accurate in terms of knock based ignition retard. I'm not sure what it is but it seems more like some sort of programmed response from the ECU possibly. It would be good to compare notes on this as it's got me really curious.

 

[Team Tonka]

From what I understand there are a few Stingers running 1.5bar and a few G70s as well. In terms of the 2.3 degrees of timing, I've seen this with the 1.3bar as well. Lozic didn't think it was accurate in terms of knock based ignition retard. I'm not sure what it is but it seems more like some sort of programmed response from the ECU possibly. It would be good to compare notes on this as it's got me really curious.

Agree.

 

[Williamsj41]

These were some short pulls on strait ms109 with the lozic 1.5 if anyone was curious about the octane and timing.

 

[ChaneRZ]

Timing looks good

 

[Williamsj41]

It did but like I was saying the other day. It was to much octane for the tune after being in there for a bit it did throw a cel and put me in limp mode. The cel said the ecu was unsure of how much fuel to inject. And it took me from a 11.68 on e40 to 11.99 on a quarter run temp and humidity was higher on the ms109 run by 20 degf tho. That's why we started diluting it with 93 and all the problems went away.

 

[Williamsj41]

Seems to be running pretty good rightnow it has a weird mix but the fuel it sensor says E46. Should still have around 2 gallons of ms109, 8.5 gallons of E85 and 5.5 gallons of 93. Has anyone with meth tried any E mixtures yet.

 

[Williamsj41]

Has anyone else had the throttle closing up killing power on long 1/4 pulls mine seem to always happen around 5500-5700 rpm in 5th gear. Then it just kick back up and keeps pulling.

 

[XGC75]

Learning a lot from this thread. It doesn't appear this ECU has any adaptations apart from short-term timing in order to prevent knock? If that's the case, I'm surprised there are so many eager to change hardware on this platform at all.

Also really surprised to see G90 ECUs installed into Stingers when someone in the aftermarket industry says there are differences in firmware between the two.

FWIW I've got a G70 on the way. Just shopping for options.

 

[Slip_Angle]

Learning a lot from this thread. It doesn't appear this ECU has any adaptations apart from short-term timing in order to prevent knock? If that's the case, I'm surprised there are so many eager to change hardware on this platform at all.

Also really surprised to see G90 ECUs installed into Stingers when someone in the aftermarket industry says there are differences in firmware between the two.

FWIW I've got a G70 on the way. Just shopping for options.

This is a stock ECU with modified software, so whatever the stock ECU adapts this will as well. For example, people are seeing -2.3 degrees of ignition timing being pulled across all cylinders in some cases. My thinking right now is this is a TCU communication telling the ECU to dial back torque to protect the trans. It also adapts AF ratio just like stock when you change things like intake, exhaust. Just a couple examples.

The G90/G80/G70 ECU hardware is all compatible from what I understand, as long as it erased and the Stinger/G70 software is written over top it's all good.

I've had no issues with my tune though it's a conservative 1.3Bar (ish) meant for 91 octane. It runs really well and I've logged it several times with my trusty JB4.

 

[XGC75]

Most automakers do a great job controlling their interfaces so they can guarantee compatibility across the lines. I'm not at all surprised that a 3.3t G90 ECU can run a 3.3t in the Stinger, and I'm not even opposed to it; I just hope Lozic is overwriting all the firmware and not just the parameterization needed to make more power.

@Terry@BMS said, "Yes, the flash side stuff has some differences. Maybe they forgot to adjust a table on the Stinger side" which is where my comment comes from. So far given the insane results on the G70 I'm really optimistic about this solution, but weary about the approach and unknown variables coming in and ruining the party.

How does the AF ratio adaptation work? Does the ECU keep long-term fuel trim in non-volatile memory? Feel free to point me to a more technical thread if this has been discussed already.

 

[XGC75]

Now that I think about it, actually, @Williamsj41's problem may also be related to maxing out the long-term fuel trims. I recall on the VW EA888 platform with the MED17 ECU, changing the cats would push the system beyond the point the LTFT's could compensate. It was a VERY worthwhile mod on that engine (an 800-cell cat was less than an inch from the turbine blades...), but you could only get so far without a so-named "stage 2" tune that would specifically address the fuel trim issue. With a stage 1 tune and a catless downpipe the car would frequently overboost before boost protection kicked in.

 

[Williamsj41]

That is true I have thought about that the overboosting is self inflicted. Lozic did say they could flash it for the down pipes I will probably have it done. I do love the power in the tune when it's running good it is very fast. But it is very temperamental for me and if it gets to cold adjusting the ewg control down to far will throw a CEL about wategate position to low for the tune. I could be wrong but I also think I am the only one going at this tune with cpi instead of meth or I atleast have not see anyone say they are using cpi with it. I am still playing around with E mixtures to try to find a good reliable daily daily driving mixture. So far E36 has been doing good today on timing.

 

[Williamsj41]

As of rightnow this is my best 1/4 time with full weight, factory launch control, stock wheels and all season tires and a full tank of gas. factory tcu and awd module. My tcu tune should be here in 2 days I will see if it is fighting my ecu holding it back throwing timing off. I feel like that is quick for no brake snip or weight reduction.