Lozic ECU + TCU + AWD Tune

[StingertimeNC]

Hey, if there’s no timing being pulled then add a LB of boost, log it. If Octane supports 21 or 22 lbs then you’re good. I’m running 21-23 range with 93 and WMI. 50/50 blend. Honestly I would think 19 or 20 would be good for just 93. Hell some Folks have timing issues at 17 or 18 lbs on 93 octane alone.

Are you running e30?

 

[Avon]

Have you tried this yourself?

I did. Just few lbs.

 

[GennyGuy]

Peak boost doesn't mean faster. I guarantee the Lozic 1.4 will be far superior to JB4 map 2

It definitely is. Trap speed for me in the 1/8th was increased about 2-3mph. That's a lot and trap speed is a better indicator of power. E/Ts will have more to do with driver error/mod. Trap speed is the car.

I didn't test this much and I wish that I had. If you have a good spot, trying doing some 60-130s and see what you get for time. I dropped almost 3 seconds.

This is what 3 seconds looks like.


Link to the video is below. Side note: this guy's content is awesome.

 

[Pearly]

I did. Just few lbs.

Here is why I ask.. my car is running strong with good timing. In 2nd and 3rd gear it’s around 18psi. So I went to map6 and added 2lbs of psi to test it out. This is where it gets interesting-

So example map0 the lozic ECU is calling for 18psi and then I get 18lbs of boost.

Map6 with 2psi added the lozic ECU now only calls for 16psi so I still get 18lbs of boost. So it’s like the ECU compensates or something and you get the same boost regardless- I hope that makes sense? I wondered if this was just mine or maybe doing something wrong etc. The logs show how the target is 2psi over the ECU which it does do.. it’s just as soon as I do map6 the ECU is less psi.

 

[Avon]

Idk how much it matters but you got the backend flash bit selection on in jb4?

 

[Pearly]

Idk how much it matters but you got the backend flash bit selection on in jb4?

Meaning bit6? Like letting JB4 know you have an aftermarket ECU?

 

[Avon]

Yes. If you do try bumping up just bit more just don't get carried away. If that doesn't work then I honestly don't know what is going on. Target boost pretty dependant on air temp so if a cold morning should expect lower target than say hot muggy day.

 

[Pearly]

Yes. If you do try bumping up just bit more just don't get carried away. If that doesn't work then I honestly don't know what is going on. Target boost pretty dependant on air temp so if a cold morning should expect lower target than say hot muggy day.

Yes I have bit 0,5 and 6 turned on. I tried it up to 3 last night. I was going back and forth. So same weather etc. ECU psi would just always be lower in map6. Switch back to map0 and ECU psi would be right back up. I know this sounds confusing as hell. So I’ll make some logs today and share with you. I appreciate you looking.

 

[Pearly]

It definitely is. Trap speed for me in the 1/8th was increased about 2-3mph. That's a lot and trap speed is a better indicator of power. E/Ts will have more to do with driver error/mod. Trap speed is the car.

I didn't test this much and I wish that I had. If you have a good spot, trying doing some 60-130s and see what you get for time. I dropped almost 3 seconds.

This is what 3 seconds looks like.
View attachment 71340

Link to the video is below. Side note: this guy's content is awesome.

This makes a lot of sense. I will try 1/8th mile trap speed when I can. Last night because of the road I was only able to compare 0-60 (from auto hold for fairness) and a custom 15-70mph. On the free way 60-100 definitely feels faster- the tune seems more impressive up top. 1st-3rd seem pretty mild in comparison.

 

[Pearly]

How many of you know much about fuel trims? I noticed on my logs when I add boost in map6 the fuel trims go higher.. would that have anything to do with why the ECU calls for less boost than on map0?

 

[Slip_Angle]

It definitely is. Trap speed for me in the 1/8th was increased about 2-3mph. That's a lot and trap speed is a better indicator of power. E/Ts will have more to do with driver error/mod. Trap speed is the car.

I didn't test this much and I wish that I had. If you have a good spot, trying doing some 60-130s and see what you get for time. I dropped almost 3 seconds.

This is what 3 seconds looks like.
View attachment 71340

Link to the video is below. Side note: this guy's content is awesome.

That's a great visualization. Thanks for posting it!

 

[Yves998]

I’m able to run 3.9s constantly when the DA is below 2000 now. I’m having 1.5 bar tune and tcu pressure 2 -10%. It’s all auto shifting and launched at 2300rpm. Mods are just intake, spark plugs, muffler and second cat delete.



Surprisingly DA affects our small stock turbo so much that I’m even having hard time break 4.1s when it’s 3600+.

 

[Pearly]

I’m able to run 3.9s constantly when the DA is below 2000 now. I’m having 1.5 bar tune and tcu pressure 2 -10%. It’s all auto shifting and launched at 2300rpm. Mods are just intake, spark plugs, muffler and second cat delete.

View attachment 71448View attachment 71449

Surprisingly DA affects our small stock turbo so much that I’m even having hard time break 4.1s when it’s 3600+.
View attachment 71450

Nice! Remind me are you AWD?

 

[Yves998]

Nice! Remind me are you AWD?

Yup. Last night have good DA but it’s too cold and slippery so I can’t even launch properly above 2300 rpm.

 

[Pearly]

Yup. Last night have good DA but it’s too cold and slippery so I can’t even launch properly above 2300 rpm.

What happens if you launch above 2,300rpm? I live in very high altitude so I understand your struggle!

 

[Yves998]

What happens if you launch above 2,300rpm? I live in very high altitude so I understand your struggle!

Last night is about 9 celcius so my indy500 is not grippy enough. It will go spin crazily then the car early shift itself at around 4000rpm to get traction back. I’m able to to 2700 rpm launch during the day when it’s 18C plus easily tho. I’ll see a lot more G in my drag when launching at 2700 but I’ll be struggling with getting it under 4.1s since the DA goes as high as 3700. I’ll try the short shift first gear method you guys mentioned to see how much faster I can be. I’m currently let the gearbox shift itself at -10% setting.

 

[Yves998]

What happens if you launch above 2,300rpm? I live in very high altitude so I understand your struggle!

Back in my NA 370z days I can have 0.3s different during the day and night. I just didn’t expect it matters this much for our turbo. But seeing all the others with same mods running faster than me really makes me want to go grab WMI right now.

 

[G70LEbyAdoom]

Back in my NA 370z days I can have 0.3s different during the day and night. I just didn’t expect it matters this much for our turbo. But seeing all the others with same mods running faster than me really makes me want to go grab WMI right now.

As a fellow owner of Indy 500's I know your struggle. Even with AWD, at night (Around 50F here) if I launch the car I have to launch at 2500rpm, during the day (Around 70-80F) I can launch at 2700-2800 on 8lbs of boost before it starts spinning the tires. my day launches are usually between 0.3 and 0.5 seconds quicker because of it.

 

[buddy712]

I see Lozic added WMI as an option on the ECU order form. Out of curiosity, anyone know what would be different on the tune with that turned set to Yes.

I am getting a re-tune, I have been running WMI with the existing Lozic tune and just wanted to know what to expect with that setting on.

 

[HoosierStinger]

I see Lozic added WMI as an option on the ECU order form. Out of curiosity, anyone know what would be different on the tune with that turned set to Yes.

I am getting a re-tune, I have been running WMI with the existing Lozic tune and just wanted to know what to expect with that setting on.

My question to Lozic a few weeks ago:

I am curious what is the basic difference in ECU mapping when choosing Yes or No for "installed methanol injection"

Can engine damage occur if I choose YES the methanol tank runs empty?

I don't have water methanol injection now but I may decide to add water methanol injection in the future.

His reply:

There is no difference in setting when using 93 fuel.

There is a difference in setting when using 91 fuel and WMI.