Lozic ECU + TCU + AWD Tune

[Kiteflygolfdrive]

I went with pressure 1 and -8% rpm, and for daily driving I think a TCU tune is very safe, but you have to figure out what rpm reduction works for you, now if you graph one of your jb4 logs you will see that boost drops when the RPM pass 6k, Atomic said go with -8% or higher, so I used some math to figure out at what rpm the trans will shift, normally the trans shift at 6250, if you multiply 6250×0.08=500, now you subtract 500 from 6250 that's 5750, very good starting point IMO.

Thanks for the reply and the math. Seriously. That helps a lot. I saw TT‘s last stinger video on YouTube just now and noticed your post. Interesting that he liked as high as 13%. I have the ECU /TCU order form that’s kind of prefilled. Besides the pressure and percentage did you change any other settings?

1. what changed your mind to select shift pressure 1 vs 2?

2. So as the % gets greater the shifts occur sooner. It would seem that there’s a % where gains decrease as percentage increases. I wonder if that’s somewhere around 13%? I’ll have to look at my logs (still learning to read them) and see what my boost curve looks like.

 

[Tommy G]

Thanks for the reply and the math. Seriously. That helps a lot. I saw TT‘s last stinger video on YouTube just now and noticed your post. Interesting that he liked as high as 13%. I have the ECU /TCU order form that’s kind of prefilled. Besides the pressure and percentage did you change any other settings?

1. what changed your mind to select shift pressure 1 vs 2?

2. So as the % gets greater the shifts occur sooner. It would seem that there’s a % where gains decrease as percentage increases. I wonder if that’s somewhere around 13%? I’ll have to look at my logs (still learning to read them) and see what my boost curve looks like.

Yeah I saw TTs video today and he sold the stinger for a bmw for better mpg lol. As for pressure I chose 1 just to be on the safe side, and Lozic himself told me with these settings I should remove half a second! So why going harder. As for -13% yeah that's a lot car going to shift at 5400-5500RPM, just go to your logs and graph them, amd pay attention to the green line and the blue line there is a negative correlation between the two, the green line is rpm and the blue is boost.

 

[Pearly]

Yeah I saw TTs video today and he sold the stinger for a bmw for better mpg lol. As for pressure I chose 1 just to be on the safe side, and Lozic himself told me with these settings I should remove half a second! So why going harder. As for -13% yeah that's a lot car going to shift at 5400-5500RPM, just go to your logs and graph them, amd pay attention to the green line and the blue line there is a negative correlation between the two, the green line is rpm and the blue is boost.

TT got his TCU tune from me actually. I also have -13%. I chose this based off my jb4 logs and my boost drop. Lozic just forgot one feature on mine so I was able to have lozic send me a new one and worked out a deal to send my first one to TT. -13% for MY stinger in Sport mode will shift at 5,600-5,700. Also easiest way to play around with that math for me is this- my car Factory shifted 6,400-6,500. So I used 6,450. Then 6,450 x by 87% (so -13%) equals 5,611. Hope this helps.

 

[Tommy G]

TT got his TCU tune from me actually. I also have -13%. I chose this based off my jb4 logs and my boost drop. Lozic just forgot one feature on mine so I was able to have lozic send me a new one and worked out a deal to send my first one to TT. -13% for MY stinger in Sport mode will shift at 5,600-5,700. Also easiest way to play around with that math for me is this- my car Factory shifted 6,400-6,500. So I used 6,450. Then 6,450 x by 87% (so -13%) equals 5,611. Hope this helps.

Oh wow, my G80 shift at 6250RPM, so these cars are different! I -8% would be good for me.

 

[Pearly]

Oh wow, my G80 shift at 6250RPM, so these cars are different! I -8% would be good for me.

I agree! Personal logs is the best way to determine personal shift points.

After CPI (I know guys I have delayed this) I’m going to get a revision most likely.

 

[Tommy G]

I agree! Personal logs is the best way to determine personal shift points.

After CPI (I know guys I have delayed this) I’m going to get a revision most likely.

Oh really, what percentage you going with next time?

 

[Pearly]

Oh really, what percentage you going with next time?

Going to use map 6 to add more PSi at higher RPM. So not much change. Probably -11% (5,800ish) and shift pressure 2 instead of 1 this time. And smoother downshift.

 

[Tommy G]

Going to use map 6 to add more PSi at higher RPM. So not much change. Probably -11% (5,800ish) and shift pressure 2 instead of 1 this time. And smoother downshift.

I'm sticking with the JB4 for now, but eventually I will go with 1.5 bar no pops/bangs, I already chose the smooth downshift from 2 to 1, and please keep us updated with your next tcu!

 

[Pearly]

I'm sticking with the JB4 for now, but eventually I will go with 1.5 bar no pops/bangs, I already choose the smooth downshift from 2 to 1, and please keep us updated with your next tcu!

I would have chose the smooth downshift if it was an option back when I got mine it’s not terrible now though. Only barely notice it in sport mode.

Also just to echo what Yves said.. my advice would be to get a 1.3 or 1.4 bar and then use map6 as your friend when you want a little extra. Example Map0 to cruise and still have plenty of power (and in case bad gas.) Then map6 for the little extra when needed.

 

[Kiteflygolfdrive]

Interesting read about car shift points. Since cars may have slightly different shift points depending on OEM differences and personal performance mods, is there a recommended RPM range to target when ordering. Maybe one RPM range for those of us who use it as a daily driver and/or plan to keep it for a while and another for those who want to drive it as a pure max performance car? I’m going to do a few WOT pulls tomorrow and see what the logs look like. I’ve had the performance mods in for a bit 500miles now so the JB4/ECU should have settled in by now.

Thanks for all the info. Really helps me and others understand the magic behind the electrons.

 

[carguy83]

Are the RPMs holding at a certain point? (Like factory) Or is it controlled by how much pedal you give it?

RPM stop at a certain point… No spinning. This is the response I got from Lozic.
“launch control boost is handled by the ECU.
TCU does not make boost.”

Does he give refunds if I return it? I don’t have time to go back and forth with him. From what I’ve read, I should be able to build boost if the launch torque control is off. The car isn’t doing it and I still get that stupid 1 second delay before the car really gets on it out of a launch. From what I’ve read, this is not what other people have been experiencing. I’m pretty sure he forgot to add it to the TCU tune, but I will try it again today.

 

[Pearly]

RPM stop at a certain point… No spinning. This is the response I got from Lozic.
“launch control boost is handled by the ECU.
TCU does not make boost.”

Does he give refunds if I return it? I don’t have time to go back and forth with him. From what I’ve read, I should be able to build boost if the launch torque control is off. The car isn’t doing it and I still get that stupid 1 second delay before the car really gets on it out of a launch. From what I’ve read, this is not what other people have been experiencing. I’m pretty sure he forgot to add it to the TCU tune, but I will try it again today.

If the RPMs stop then either you don’t have torque limit off and he sent you the wrong TCU. Or you’re not in “full sport” mode. I only had TCU for a while with no ECU and RPMs will not stop and tires will light up.

 

[AtomicGTL]

I would try returning the tcu and getting one with the torque limits off. He may have sent a wrong one by accident. It happens and he's very quick to fix his faults.

 

[Hacksaw907]

RPM stop at a certain point… No spinning. This is the response I got from Lozic.
“launch control boost is handled by the ECU.
TCU does not make boost.”

Does he give refunds if I return it? I don’t have time to go back and forth with him. From what I’ve read, I should be able to build boost if the launch torque control is off. The car isn’t doing it and I still get that stupid 1 second delay before the car really gets on it out of a launch. From what I’ve read, this is not what other people have been experiencing. I’m pretty sure he forgot to add it to the TCU tune, but I will try it again today.

Try to wait and see if the rpm's creep up past 2/2.1k. For me, the launch stops at the stock launch rpm limit for a few milliseconds, and then ramps up past it, allowing you to launch at whatever rpm you release the brake at (my ideal rpm range is 2300-2500). If it doesn't creep up after a few seconds, then yeah, your tune is missing something.

 

[Tommy G]

Try to wait and see if the rpm's creep up past 2/2.1k. For me, the launch stops at the stock launch rpm limit for a few milliseconds, and then ramps up past it, allowing you to launch at whatever rpm you release the brake at (my ideal rpm range is 2300-2500). If it doesn't creep up after a few seconds, then yeah, your tune is missing something.

I have a question guys what oil viscosity are you guys using?

 

[carguy83]

Try to wait and see if the rpm's creep up past 2/2.1k. For me, the launch stops at the stock launch rpm limit for a few milliseconds, and then ramps up past it, allowing you to launch at whatever rpm you release the brake at (my ideal rpm range is 2300-2500). If it doesn't creep up after a few seconds, then yeah, your tune is missing something.

I will try that, but I was referred to this by some other people which would mean that regardless of the TCU the ECU can correct launches.

"Reason being, the torque limits and throttle opening schedule inside of the ECU can make attempts to correct the output from the TCU when launching the car. This can trigger a momentary safe mode, a small surge, or possible throttle close then re-open right at launch."

 

[Pearly]

I will try that, but I was referred to this by some other people which would mean that regardless of the TCU the ECU can correct launches.

"Reason being, the torque limits and throttle opening schedule inside of the ECU can make attempts to correct the output from the TCU when launching the car. This can trigger a momentary safe mode, a small surge, or possible throttle close then re-open right at launch."

I understand that for sure. However if you ordered with torque limits off you would be the first person I have heard about that can’t launch on boost. I would 99.9% guarantee you it’s a TCU that has Torque limit on.

 

[Hacksaw907]

I will try that, but I was referred to this by some other people which would mean that regardless of the TCU the ECU can correct launches.

"Reason being, the torque limits and throttle opening schedule inside of the ECU can make attempts to correct the output from the TCU when launching the car. This can trigger a momentary safe mode, a small surge, or possible throttle close then re-open right at launch."

For me, safe mode doesn't feel like stock launch, but rather like the car fell on its face and got back up. When I had my stock ecu, there definitely was a smaller window where you can launch at higher rpm's without it triggering safe mode, but 2300-2500 should still be within that range.

 

[carguy83]

So I tried a couple of different launches... Safe mode definitely kicks in. I set up the car for Launch and when I let the RPMs creep up, the car would reset around 2900 rpms. I can’t even touch 3000 with launch ready. If I tried to launch right before 2900rpms... The car fell flat on its face like @Hacksaw907 stated. Launches below that are still like my stock launches and possibly a bit worse to be honest. I get a power to the wheels and then a delay the car gets power… It’s not good at all/ I'm pulling the TCU out today and I asked him to let me just send it back. Unfortunately, I am not getting the performance that everyone else is getting. Do you guys know anyone with a 2022 Genesis G70 using his TCU?

 

[Yves998]

So I tried a couple of different launches... Safe mode definitely kicks in. I set up the car for Launch and when I let the RPMs creep up, the car would reset around 2900 rpms. I can’t even touch 3000 with launch ready. If I tried to launch right before 2900rpms... The car fell flat on its face like @Hacksaw907 stated. Launches below that are still like my stock launches and possibly a bit worse to be honest. I get a power to the wheels and then a delay the car gets power… It’s not good at all/ I'm pulling the TCU out today and I asked him to let me just send it back. Unfortunately, I am not getting the performance that everyone else is getting. Do you guys know anyone with a 2022 Genesis G70 using his TCU?

AWD? If so it’s just the transfer case protection being triggered since the rear wheels spin too much. Lots of us can’t even do harder than 2500 rpm with street tires.