Lozic ECU + TCU + AWD Tune

[Kiteflygolfdrive]

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?

Maybe I missed it, but are you running a JB4 or other ECU piggyback. If so could that have something to with the output.

 

[carguy83]

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.

That’s unfortunate. Looks like I should’ve done more some more research before purchasing.
I just asked if I could send it back for a partial or full refund… If not, I’ll be selling it.

 

[carguy83]

Maybe I missed it, but are you running a JB4 or other ECU piggyback. If so could that have something to with the output.

I have a JB4. I can try it on Map 0 to see if it changes anything. I honestly think it’s the ECU causing the issue just because I can’t rev higher than 2900 without the launch resetting.

 

[G70LEbyAdoom]

I have a JB4. I can try it on Map 0 to see if it changes anything. I honestly think it’s the ECU causing the issue just because I can’t rev higher than 2900 without the launch resetting.

are you sure you are reading that info right? Regardless of AWD or RWD, unless you are on slicks, 2900rpm will be spinning the rear tires no matter what, IMO that is way too high of an RPM to be launching at.

 

[carguy83]

are you sure you are reading that info right? Regardless of AWD or RWD, unless you are on slicks, 2900rpm will be spinning the rear tires no matter what, IMO that is way too high of an RPM to be launching at.

Reading what info incorrectly? I made the statement about the ECU because if the rev limiter is off, in theory, I should be able to rev past 2900 rpm. Regardless, the car is launching like stock and worse at times. It feels like a safety measure because the launch gets delayed until I’m already creeping.

 

[Avon]

I would not aim for an RPM at launch. Aim for a PSI of boost. Think most recommend about 8 psi.

 

[carguy83]

I would not aim for an RPM at launch. Aim for a PSI of boost. Think most recommend about 8 psi.

 

[carguy83]

 

[Avon]

I'd try more pedal looks like you only like 25 percent.

 

[Kiteflygolfdrive]

View attachment 76589

I’m definitely not an expert and I’m still trying to learn how to read logs. I’ve only had mine for a few weeks. But after extensive reading on the JB4tech forum I thought there were safety measures built into the JB4 that could be tripped if you request too much boost. Recently there was a post from the JB4 designers on how to correctly log your results for them to analyze. Maybe you could start there. Record a few pulls and then upload them for folks to help you. They seem very knowledgeable and willing to help diagnose issues.

Do you have EWG wires?

 

[carguy83]

I’m definitely not an expert and I’m still trying to learn how to read logs. I’ve only had mine for a few weeks. But after extensive reading on the JB4tech forum I thought there were safety measures built into the JB4 that could be tripped if you request too much boost. Recently there was a post from the JB4 designers on how to correctly log your results for them to analyze. Maybe you could start there. Record a few pulls and then upload them for folks to help you. They seem very knowledgeable and willing to help diagnose issues.

Do you have EWG wires?

I posted my log in the FB group and it’s not the JB4. Yes, I have EWGs. I sent Lozic the same info I provided here as well as the FB group and he hasn’t had a good explanation. He also hasn’t offered to have it sent back to be checked to make sure he actually added Rev Limiter Off. My last request was to send it back for a full or partial refund. I appreciate everyone trying to help. I have pulled the TCU and awaiting a response from Lozic.

 

[Tommy G]

Hi everyone, this is an update on the lozic TCU tune, I placed an order on November 26th, and I received the TCU today December 1st, initial thoughts I'm very impressed with this tune in eco/normal I didn't notice any difference, but in sport it's faster, crisp, and smoother downshifts, I went with -8% shift RPM in the hopes of shifting under 6000 RPM, and its shifting around 5900ish boost staying up! Also when I'm doing 80mph on the highway the minute I press the brakes (very light like 5%) the TCU will downshift to higher RPM at 3500 for potential racer Honda lol, I will include a log for you guys to check out. Ignore the correction it's bad gas.
Sorry for the bad writing, English is a second language!

 

[rpoffen]

I don't see a launch in the log, so you don't know what that will do.
Attached is a log on my best 1/4 mile track run to date, 11.801 @ 117.64 MPH.
What I do (this is a full tree) is hold the brake give it 100% throttle at the first yellow, and release the brake on the last yellow. Launches nice and hard no bogging. From the logs you can see that it is about 2500 RPM and just over 6.2 PSI boost. I have the meth start flowing at 6 PSI so everything happens right at launch.
Couldn't do it without the TCU.

 

[Tommy G]

I don't see a launch in the log, so you don't know what that will do.
Attached is a log on my best 1/4 mile track run to date, 11.801 @ 117.64 MPH.
What I do (this is a full tree) is hold the brake give it 100% throttle at the first yellow, and release the brake on the last yellow. Launches nice and hard no bogging. From the logs you can see that it is about 2500 RPM and just over 6.2 PSI boost. I have the meth start flowing at 6 PSI so everything happens right at launch.
Couldn't do it without the TCU.

Yeah I couldn't do a launch it's rush hour and I'm in Rhode island, a 10 mile drive took me 45 minutes!
Also that is a very good launch, but my car doesn't have launch control, so I will have to brake boosting it or something, I wish I could launch the car somewhere.

 

[rpoffen]

Yeah I couldn't do a launch it's rush hour and I'm in Rhode island, a 10 mile drive took me 45 minutes!
Also that is a very good launch, but my car doesn't have launch control, so I will have to brake boosting it or something, I wish I could launch the car somewhere.

Oh, had to go back to some of your other posts, I see that you have a G80, not a Stinger. Shame if they didn't put launch control in those.
Do you have an H or E shifter? Some have said if you have E shifter, some you can hold up the parking brake button up to build boost. I know mine isn't strong enough to hold under launch boost though.
Another option is the stop lamp wire snip.
Can you disable both stability and traction control (hold down the traction control button for 3+ seconds), if either of these are active, then any wheel spin at launch will likely feather the engine, if you can get both disabled, might prevent that.

 

[Tommy G]

Oh, had to go back to some of your other posts, I see that you have a G80, not a Stinger. Shame if they didn't put launch control in those.
Do you have an H or E shifter? Some have said if you have E shifter, some you can hold up the parking brake button up to build boost. I know mine isn't strong enough to hold under launch boost though.
Another option is the stop lamp wire snip.
Can you disable both stability and traction control (hold down the traction control button for 3+ seconds), if either of these are active, then any wheel spin at launch will likely feather the engine, if you can get both disabled, might prevent that.

It's the E shifter, and yes I can disable two stage traction control, but I haven't tried launching it with the Auto hold, or brake snip honestly I'm more interested in roll racing, since we don't even have a dragstrip here in Rhode island.

 

[G70LEbyAdoom]

I don't see a launch in the log, so you don't know what that will do.
Attached is a log on my best 1/4 mile track run to date, 11.801 @ 117.64 MPH.
What I do (this is a full tree) is hold the brake give it 100% throttle at the first yellow, and release the brake on the last yellow. Launches nice and hard no bogging. From the logs you can see that it is about 2500 RPM and just over 6.2 PSI boost. I have the meth start flowing at 6 PSI so everything happens right at launch.
Couldn't do it without the TCU.

Something that @AWDGT2 taught me is that you should have meth flowing as soon as possible to make sure its already actually in the car by the time you launch, so if you want to go even faster, have your meth flow at 1psi at the track. not only will it already be ready to go at the light, but it will lower your IAT's on launch more. I noticed a significant difference after doing so.

 

[rpoffen]

Something that @AWDGT2 taught me is that you should have meth flowing as soon as possible to make sure its already actually in the car by the time you launch, so if you want to go even faster, have your meth flow at 1psi at the track. not only will it already be ready to go at the light, but it will lower your IAT's on launch more. I noticed a significant difference after doing so.

Thanks for the tip. Race season opens again on March 1, I will try your suggestion.

 

[Yves998]

Something that @AWDGT2 taught me is that you should have meth flowing as soon as possible to make sure its already actually in the car by the time you launch, so if you want to go even faster, have your meth flow at 1psi at the track. not only will it already be ready to go at the light, but it will lower your IAT's on launch more. I noticed a significant difference after doing so.

That’s also the reason that why I’m staying with snow stage 4 even if I have JB4 on my car. I need to control the meth flow map for low boost/rpms spray for track day accurately so I don’t flood my engine. No simpler controller can do the same job.

 

[Tommy G]

dumb question, can I pass state inspection with the JB4, and the TCU tune?