Lozic ECU and JB4 map 6 log review

[SeabrookStinger]

You should take off lozic ECU and ask for revision immediately. You’re paying for a full tune, relying on JB4 to fix a boost problem is not acceptable for what you’re paying for. Lozic will fix it his side for sure.

This amount of timing pull is too much and unsafe. You need to go for 1.3 bar tune for pump gas only or WMI/CPI if you ever consider 1.4 bar and above.

Also EWG and flashed tune can be playing with fire. There are some permanent code can be triggered and wouldn’t go away with regular ECU reset we’ve been doing. If that ever happened to you, another spare ECU from lozic is the only solution.

I wonder why Lozic is saying you can achieve 1.5 bar with 93 octane. And you right about having to use jb4 to correct over boosting. I didn’t know about the EWG and flash tune issues, rather not have that problem. Is anybody running Lozic 1.5 bar with 93 octane (E30 if needed) without WMI/CPI and no issues? If not I should go down to 1.3 bar.

 

[Yves998]

I wonder why Lozic is saying you can achieve 1.5 bar with 93 octane. And you right about having to use jb4 to correct over boosting. I didn’t know about the EWG and flash tune issues, rather not have that problem. Is anybody running Lozic 1.5 bar with 93 octane (E30 if needed) without WMI/CPI and no issues? If not I should go down to 1.3 bar.

Different brands of the fuel can be night and day difference, not to mention different states with different regulations and laws on fuel additives. Korea is heavy MTBE user so I wouldn’t doubt their gasoline is superior for turbo cars. Shell 93’s new formula gives about me -3 degree while Petro Canada 94 and Chevron 94 giving me -6. If the new shell 93 along is -3 then I’m positive that E30 can be clean log. I achieved clean log with 375cc WMI nozzle and shell93. Now I’m using 600cc nozzle and having a 750cc one on the way. Still it all depends on your log to show how each brand of fuel works for you. You can’t rely on internet when it comes to local fuel quality.

 

[GennyGuy]

I wonder why Lozic is saying you can achieve 1.5 bar with 93 octane. And you right about having to use jb4 to correct over boosting. I didn’t know about the EWG and flash tune issues, rather not have that problem. Is anybody running Lozic 1.5 bar with 93 octane (E30 if needed) without WMI/CPI and no issues? If not I should go down to 1.3 bar.

Best I ran without needing CPI or WMI from Lozic was 1.4 bar. I had no issues with that tune and only ran 93 octane. This is before he moved stateside. I think the gas in Korea is better and/ or they use a different system for calculating octane. Kinda like metric vs imperial. For 1.5 bar, you will definitely need wmi or cpi, as the tune is just too aggressive and requires a higher octane. If you don't do that, you will have constant timing corrections and risk blowing the engine. This doesn't matter who you have for a tuner.

Another thing to be aware of is that each car is going to react slightly different to the tunes. Even it's the same tune. There is always variance. My car for whatever reason, does not like ethanol as much as some other cars. It also seems to be a boost monster and hit higher psi even on the same settings as some other owners. I've had to use the JB4 to lower boost on multiple tunes and this was not exclusive to any one tuner.

Depending on where you live, for 93 octane, you need to stay 1.4 bar and under. Limiting JB4 interference with an ECU tune is also important. I had issues from too many things trying to control fuel and wastegate. Got rid of fuel wires and EWG and problems left. Everyones cars will react a little different, just something to keep in mind whenever you are doing any mod to your car.

 

[SeabrookStinger]

Best I ran without needing CPI or WMI from Lozic was 1.4 bar. I had no issues with that tune and only ran 93 octane. This is before he moved stateside. I think the gas in Korea is better and/ or they use a different system for calculating octane. Kinda like metric vs imperial. For 1.5 bar, you will definitely need wmi or cpi, as the tune is just too aggressive and requires a higher octane. If you don't do that, you will have constant timing corrections and risk blowing the engine. This doesn't matter who you have for a tuner.

Another thing to be aware of is that each car is going to react slightly different to the tunes. Even it's the same tune. There is always variance. My car for whatever reason, does not like ethanol as much as some other cars. It also seems to be a boost monster and hit higher psi even on the same settings as some other owners. I've had to use the JB4 to lower boost on multiple tunes and this was not exclusive to any one tuner.

Depending on where you live, for 93 octane, you need to stay 1.4 bar and under. Limiting JB4 interference with an ECU tune is also important. I had issues from too many things trying to control fuel and wastegate. Got rid of fuel wires and EWG and problems left. Everyones cars will react a little different, just something to keep in mind whenever you are doing any mod to your car.

Thanks for the feedback, I’m debating on either going to 1.4 bar to stay on 93 octane or looking into the BMS WMI kit. I’ve never ran WMI before so it would be new to me. If I was to get WMI Kit would I still need to send the ECU back for revision since I didn’t select WMI on the order form or would I be able to install it and go?

 

[GennyGuy]

Thanks for the feedback, I’m debating on either going to 1.4 bar to stay on 93 octane or looking into the BMS WMI kit. I’ve never ran WMI before so it would be new to me. If I was to get WMI Kit would I still need to send the ECU back for revision since I didn’t select WMI on the order form or would I be able to install it and go?

I don't think so, but that question is best for the tuner.

 

[Yves998]

Thanks for the feedback, I’m debating on either going to 1.4 bar to stay on 93 octane or looking into the BMS WMI kit. I’ve never ran WMI before so it would be new to me. If I was to get WMI Kit would I still need to send the ECU back for revision since I didn’t select WMI on the order form or would I be able to install it and go?

I’d like to say 1.4 or 1.3 is better choice especially if you’re going WMI. His boost curve is pretty conservative on higher rpm and it wouldn’t take long before you start adding high end boost with JB4 Map6. 1.4 and 1.3 bar 91 tune have way more tolerance and less problems when it come to map6.

 

[SeabrookStinger]

I’d like to say 1.4 or 1.3 is better choice especially if you’re going WMI. His boost curve is pretty conservative on higher rpm and it wouldn’t take long before you start adding high end boost with JB4 Map6. 1.4 and 1.3 bar 91 tune have way more tolerance and less problems when it come to map6.

Would I be able to 1.4 bar on 93? I only have 93 available not 91, unless you’re saying I can use 93 octane on a 91 octane tune.

 

[GennyGuy]

Would I be able to 1.4 bar on 93? I only have 93 available not 91, unless you’re saying I can use 93 octane on a 91 octane tune.

Yes. I did 93 on 1.4 bar

 

[SeabrookStinger]

Well I tried doing a pull one more time and it did not go well lol. The boost got up to 28psi and while accelerating the car felt like it wanted to go faster but it was hesitating. I will be putting the stock ECU back in and run JB4 until I can get a revised ECU. Here is the log from that pull if anyone can give more insight on it. I know the 1.5 bar on 93 only won’t work, just wondering if fuel is the only issue here or something else too.

 

[Yves998]

Would I be able to 1.4 bar on 93? I only have 93 available not 91, unless you’re saying I can use 93 octane on a 91 octane tune.

It would be safer to use your pump 93 on 91 oct tune. Also 91 oct tune’s boost curve is more friendly for Map6 stacking once you decide to go WMI.

 

[SeabrookStinger]

It would be safer to use your pump 93 on 91 oct tune. Also 91 oct tune’s boost curve is more friendly for Map6 stacking once you decide to go WMI.

Okay, yeah I wasn’t sure if it had to be 91 octane for 91 octane tune or if I could use 93 octane for 91 octane tune.

 

[ChaneRZ]

Wants to pull until you blow your engine. 24+ psi is asking for trouble.

 

[2021GT2]

Well I tried doing a pull one more time and it did not go well lol. The boost got up to 28psi and while accelerating the car felt like it wanted to go faster but it was hesitating. I will be putting the stock ECU back in and run JB4 until I can get a revised ECU. Here is the log from that pull if anyone can give more insight on it. I know the 1.5 bar on 93 only won’t work, just wondering if fuel is the only issue here or something else too.

yes take it out. you need it revised

 

[GennyGuy]

Your HPFP is crashing also. You can always use higher octane gasoline. Should never use lower octane than a tune requires.

 

[SeabrookStinger]

Your HPFP is crashing also. You can always use higher octane gasoline. Should never use lower octane than a tune requires.

Lozic advertises 1.5 bar with 93 octane which is the tune I got but after learning more in these forums, it doesn’t seem I can run the tune with 93 octane alone.

 

[Yves998]

Lozic advertises 1.5 bar with 93 octane which is the tune I got but after learning more in these forums, it doesn’t seem I can run the tune with 93 octane alone.

Your overboost problem alone deserves a revision no matter what. Just ask for a 1.4 bar 91 tune then you should be fine.

 

[SeabrookStinger]

So I messaged Lozic about getting a revised 1.4 bar 91 octane ECU. He wants me to do send another log with 93 only (have 2.5gal E85 right now) running map 0. He’s saying the overboost is related to fuel pressure. What are y’alls thoughts on this?

 

[G70LEbyAdoom]

Thanks for the feedback, I’m debating on either going to 1.4 bar to stay on 93 octane or looking into the BMS WMI kit. I’ve never ran WMI before so it would be new to me. If I was to get WMI Kit would I still need to send the ECU back for revision since I didn’t select WMI on the order form or would I be able to install it and go?

I can answer this as I went through this same situation. Yes, you can install it and run without a revision, however if you want to really take advantage of the WMI for more than just a (really, really good) fuel & Ign timing stabilizer, then you would want to get the ECU revised to account for the WMI.

 

[G70LEbyAdoom]

So I messaged Lozic about getting a revised 1.4 bar 91 octane ECU. He wants me to do send another log with 93 only (have 2.5gal E85 right now) running map 0. He’s saying the overboost is related to fuel pressure. What are y’alls thoughts on this?

It makes sense, e85 is more dense than standard gas so it can cause strange things to happen if the car is not setup to run it. However, 2.5 gallons of e85 with the rest filled up with 91/93 should not really be enough to cause an issue, as it would only be equivalent to e15-20, and that's if you got true e85. As for another part of this thread, the fuel is 100% better over in Korea, and it can def support a 1.5bar tune on pump gas alone over there. When I was first using my lozic tune, the gas around me was so bad that I would get 9-12 degrees of timing pulled on what passed for 93 by me, and it would vary wildly from station to station. at one point I found a station that had 91 octane gas that would only pull 3-4.5 degrees. WMI was literally my only option in this case. (No e85 anywhere in my state)

On an unrelated note, Does your username come from being in Seabrook NH by any chance?

 

[SeabrookStinger]

It makes sense, e85 is more dense than standard gas so it can cause strange things to happen if the car is not setup to run it. However, 2.5 gallons of e85 with the rest filled up with 91/93 should not really be enough to cause an issue, as it would only be equivalent to e15-20, and that's if you got true e85. As for another part of this thread, the fuel is 100% better over in Korea, and it can def support a 1.5bar tune on pump gas alone over there. When I was first using my lozic tune, the gas around me was so bad that I would get 9-12 degrees of timing pulled on what passed for 93 by me, and it would vary wildly from station to station. at one point I found a station that had 91 octane gas that would only pull 3-4.5 degrees. WMI was literally my only option in this case. (No e85 anywhere in my state)

On an unrelated note, Does your username come from being in Seabrook NH by any chance?

I suppose I’ll empty the rest of my tank and refill with 93 only and try one more log for him. I’m also new to WMI so I’ll have to do some more research on it. (If anybody has any links or could help on it would be appreciated). On the unrelated note I’m in TX lol