[Razor2010]

Originally Posted by g20beam

Also, regarding the B46D, it is the engine code given to me and some of the others on this forum after we checked our VIN. The VIN decoder websites gives us the code B46D.

Yes, I see that is the USA SULEV version code based on the image in my above post.

[MRMALTIES]

PTF currently working on the G20 330i. The posted a pic of the car on a dyno. Will be interesting to see what kind of power it actually makes and if they are working on the tune to work on cars with latest software.

[g20beam]

Doing my downpipe and going Stage 2 today. Will update when it’s done

[VipinLJ]

Originally Posted by MRMALTIES

PTF currently working on the G20 330i. The posted a pic of the car on a dyno. Will be interesting to see what kind of power it actually makes and if they are working on the tune to work on cars with latest software.

When I first spoke to Halim with the issues I faced, he said they have the exact same test car (G20 330i) and that the flash worked on their car without any issues. I’m assuming it’s the same car in the pic? Which makes me think it’s an older G20 without the updated ECU software (if at all that’s a thing). Which is why it worked on their car and not mine. But yes. Hopefully they figure something out.

Originally Posted by g20beam

Doing my downpipe and going Stage 2 today. Will update when it’s done

Let us know what you think. I spoke to another person who is running a BM3 stg2 tune and he said there was hardly any difference going from stg1 to stg2. He also has a G20 330i. He’s been trying to register on this forum but he doesn’t have posting rights for some reason.

[g20beam]

Originally Posted by VipinLJ

Let us know what you think. I spoke to another person who is running a BM3 stg2 tune and he said there was hardly any difference going from stg1 to stg2. He also has a G20 330i. He’s been trying to register on this forum but he doesn’t have posting rights for some reason.

At the shop as we speak. If that’s the case, I think the gains are in the high end maybe, or there’s only a difference when pulling close to red line. After Stage 1, I realised the real gains that makes this car so much faster than stock is when you’re going past 4-5K RPM. When that turbo starts spooling, and you’ve already built up the speed to around 110-120km/h, if you keep pulling in 4th/5th (Not sure which gear I am in when I’m going that speed) till red line, it puts a smile on your face how the car just keeps trucking through the speeds, and the best part is the acceleration, the turbo lag is intense. There wasn’t any of this in stock tune, the power is very linear.

I’m guessing Stage 2 is really just going to increase HP but not TQ by much, so it’s more geared for high end power I assume. If you do a 0-200 or a rolling 120-200, the difference would probably be immense between Stage 1 and Stage 2.

[Razor2010]

Originally Posted by g20beam

At the shop as we speak. If that’s the case, I think the gains are in the high end maybe, or there’s only a difference when pulling close to red line. After Stage 1, I realised the real gains that makes this car so much faster than stock is when you’re going past 4-5K RPM. When that turbo starts spooling, and you’ve already built up the speed to around 110-120km/h, if you keep pulling in 4th/5th (Not sure which gear I am in when I’m going that speed) till red line, it puts a smile on your face how the car just keeps trucking through the speeds, and the best part is the acceleration, the turbo lag is intense. There wasn’t any of this in stock tune, the power is very linear.

I’m guessing Stage 2 is really just going to increase HP but not TQ by much, so it’s more geared for high end power I assume. If you do a 0-200 or a rolling 120-200, the difference would probably be immense between Stage 1 and Stage 2.

Hi,

So less lag with stock set-up?

I was looking at some logs of a G20 330i, stock and JB4 Map 2, and I was surprised at how low the stock boost is, max in 3rd gear 12-13 psi, trailing down to 9-10 psi by redline. How BMW achieved 255 HP and 295 TQ with these low boost levels is very impressive.

Based on the logs, it looks like JB4 Map 2 is running 6 psi higher than stock, which is quite significant, talking 40-50% increase over stock!

I prefer around town, low-end 10 - 60 mph acceleration type driving with the minimum amount of lag as possible, looks like the stock set-up may be more suited for my requirement

[g20beam]

Originally Posted by Razor2010

Hi,

So less lag with stock set-up?

I was looking at some logs of a G20 330i, stock and JB4 Map 2, and I was surprised at how low the stock boost is, max in 3rd gear 12-13 psi, trailing down to 9-10 psi by redline. How BMW achieved 255 HP and 295 TQ with these low boost levels is very impressive.

Based on the logs, it looks like JB4 Map 2 is running 6 psi higher than stock, which is quite significant, talking 40-50% increase over stock!

I prefer around town, low-end 10 - 60 mph acceleration type driving with the minimum amount of lag as possible, looks like the stock set-up may be more suited for my requirement

10-60mph is pretty fast, but the biggest difference between stock and stage 1 is just the smoothness of power delivery, stock was nowhere close to smooth, but stage 1 is so good it just always hits me, “damn my car is so smooth now, the whole ride quality feels so much more refined”.

I think Stage 1 or JB4 is worth it just because the whole car drives different after.

[Razor2010]

Originally Posted by g20beam

10-60mph is pretty fast, but the biggest difference between stock and stage 1 is just the smoothness of power delivery, stock was nowhere close to smooth, but stage 1 is so good it just always hits me, “damn my car is so smooth now, the whole ride quality feels so much more refined”.

I think Stage 1 or JB4 is worth it just because the whole car drives different after.

So odd. Not sure how JB4 tuning could make a car much smoother over stock. The JB4 tuners are better than BMW? Extracting more power makes sense because JB4 are willing to push the engine closer to limits than BMW and also mpg will also suffer; however, I am not sure how this will create a smoother drive unless there is something BMW had in their tune that helped mpg and emissions perform better but created choppy driving - that would be very odd, but I guess possible.

[g20beam]

Originally Posted by Razor2010

So odd. Not sure how JB4 tuning could make a car much smoother over stock. The JB4 tuners are better than BMW? Extracting more power makes sense because JB4 are willing to push the engine closer to limits than BMW and also mpg will also suffer; however, I am not sure how this will create a smoother drive unless there is something BMW had in their tune that helped mpg and emissions perform better but created choppy driving - that would be very odd, but I guess possible.

That’s exactly it, if the B46 engine is paired with a tune disregarding emissions, no catalytic converter, it will perform so much better than any stock G20 on the market today. The emissions requirements causes the stock tune to be greatly undertuned, and without these restrictions, the car is technically performing better but just as safe.

[Razor2010]

Originally Posted by g20beam

That’s exactly it, if the B46 engine is paired with a tune disregarding emissions, no catalytic converter, it will perform so much better than any stock G20 on the market today. The emissions requirements causes the stock tune to be greatly undertuned, and without these restrictions, the car is technically performing better but just as safe.

Well removing a catalytic converter will definitely change things, less restriction, I thought you meant just a tune.

[g20beam]

Originally Posted by Razor2010

Well removing a catalytic converter will definitely change things, less restriction, I thought you meant just a tune.

Even with Stage 1 you’re going from 258HP to almost 320HP (shown on M Sport Display Gauges), and from 295TQ to almost 380TQ, that’s just from Stage 1, without removing anything. I’m just saying that in the ideal situation, where if emissions weren’t a thing, the car would probably be tuned closer to Stage 1 spec from factory. The engine can handle it. Emissions won’t allow it but stock vehicle engine potential is greatly undermined, there’s a lot of untapped potential after removing these emissions restrictions. My engine is at 30k km and it’s running perfectly healthy, I don’t drive like a moron and only pull the car on certain occasion, after the car is warmed up. Stage 1 still makes a huge difference. Just a tune is a big difference. But those willing to go Stage 2 will just get even more of a difference in power.

[MRMALTIES]

Found these dyno charts on Instagram from a company in Malaysia who tuned the G20 330i to stage 1 and stage 2. Stage 1 from stock showing the biggest gain of the two.

[VipinLJ]

Those are some real good numbers! But I wonder how it translates onto the road.
I have friends with stage 1 tuned A4s doing 0-60 in 4.4s and under very easily and can do better since those runs were done on winter tyres and a slippery surface. Stage 2 A4s do it in 4s or less and stage 3 A4s are in tuned M340i territory!
I know the older N20 engine was crap compared to these going by the quarter mile times posted for tuned cars there. I hope our B46/48s can hold a candle against those EA888 Gen 3 engines.

[mokhan54]

Originally Posted by g20beam

To put my views and thoughts on the G20 into perspective, I want to start off by saying that this is the first car I have ever modded, it was the third BMW (E60 528i & F25 X3 before G20) I have driven at the time, and since I have never driven any older E generation BMWs, the G20 330i is also the best BMW I’ve driven to date. I’ve driven a F generation 430i and a G generation X2 recently (both were loaners) and I think the steering on the 430i was tighter than the G20, but everything else on the G20 is better than both those cars by a fair margin.

Stage 1 on G20 is very refined. Any jerkiness that happens while on JB+ or stock is no longer there. The power delivery is superb. In low speed ranges, typically between 0-100km/h the car feels like it accelerates at the same rate when shifting from 1st to 4th. I feel like on the JB+, the first three gears pull more than stock for sure, but 4th is where you start to feel the car slowing in acceleration. With BM3, 4th gear gives you that same feeling as the first three gears. The 4th gear pulls quick in the 0-100km/h range. If I did the math correctly, on paper I should be making 300HP/370LBFT TQ right now. I don’t know what that translates to for 0-100 times but it’s a huge difference from stock, and very noticeable coming from JB+. I’ve heard someone say in another thread that JB+ on G20 did 0-100 in 4.9 seconds, so BM3 must be even faster than that.

Regarding whether or not BM3 is worth it, it is definitely worth it if you want a power increase that can go all the way up to stage 2 just with a high flow downpipe, all for $800 CAD. And for the people comparing JB+ and BM3, the bump in speed difference from JB+ to BM3 is the same or even more than the speed bump from stock to JB+.

I don’t have a dragy but I guess I could update you guys with a OBD2 0-100 timer.

Let me know if you guys have any questions, I will try my best to get back to you.

I just got the BM3 tune for my 2020 330 and received the OBD2 cable from Amazon. I am using a 2019 MacBook Pro (with an ethernet adapter) to connect the OBD. My Mac keeps saying 'cable unplugged'. Do you guys know what I may be doing wrong?

[VipinLJ]

Originally Posted by mokhan54

I just got the BM3 tune for my 2020 330 and received the OBD2 cable from Amazon. I am using a 2019 MacBook Pro (with an ethernet adapter) to connect the OBD. My Mac keeps saying 'cable unplugged'. Do you guys know what I may be doing wrong?

I think PTF recommends a windows laptop and google chrome browser just to be safe. I’ve read of people having issues trying to flash with a MacBook but not everyone has issues. Try with a windows laptop instead?

[mokhan54]

Originally Posted by VipinLJ

I think PTF recommends a windows laptop and google chrome browser just to be safe. I’ve read of people having issues trying to flash with a MacBook but not everyone has issues. Try with a windows laptop instead?

PTF said MacBook should work fine. they said it could be faulty cable.

You mentioned using Chrome browser. Can you explain why a browser is relevant for tuning?

I have the BM3 software installed on the Mac, when I connect the cable and go to my network settings to see ethernet status, it just doesn't didn't the cable plugged to OBD. BM3 software can't detect the car either.

This is my first time tuning and it's been really frustrating.

[VipinLJ]

Originally Posted by mokhan54

PTF said MacBook should work fine. they said it could be faulty cable.

You mentioned using Chrome browser. Can you explain why a browser is relevant for tuning?

I have the BM3 software installed on the Mac, when I connect the cable and go to my network settings to see ethernet status, it just doesn't didn't the cable plugged to OBD. BM3 software can't detect the car either.

This is my first time tuning and it's been really frustrating.

I mentioned chrome browser because I remember reading somewhere that that’s what they recommend over other browsers. Not sure why. I’m a total idiot when it comes to technology and software. Sorry.


https://bootmod3.atlassian.net/wiki/...n+your+vehicle

They’ve mentioned the recommended browser there.

Also, windows laptops need their antivirus and firewalls to be disabled. Else it won’t work. Not sure if MacBooks need something similar?

[mokhan54]

Originally Posted by VipinLJ

I mentioned chrome browser because I remember reading somewhere that that’s what they recommend over other browsers. Not sure why. I’m a total idiot when it comes to technology and software. Sorry.


https://bootmod3.atlassian.net/wiki/...n+your+vehicle

They’ve mentioned the recommended browser there.

Also, windows laptops need their antivirus and firewalls to be disabled. Else it won’t work. Not sure if MacBooks need something similar?

Thanks, I appreciate the response.

I have the Mac firewall turned off. Hoping it's just an issue with the cable I have. New one should come in tomorrow. I'll give it another go then.

Really can't think of any of other issue for my Mac to not read the OBD

[g20beam]

Originally Posted by mokhan54

Thanks, I appreciate the response.

I have the Mac firewall turned off. Hoping it's just an issue with the cable I have. New one should come in tomorrow. I'll give it another go then.

Really can't think of any of other issue for my Mac to not read the OBD

I run mine on mac, through a dongle with an ethernet port, to the OBD2 connector in my car. I use Chrome to run my bootmod3.net website portal as VipinLJ mentioned. Never had to mess with any firewall settings to get it set up.

[mokhan54]

Originally Posted by g20beam

I run mine on mac, through a dongle with an ethernet port, to the OBD2 connector in my car. I use Chrome to run my bootmod3.net website portal as VipinLJ mentioned. Never had to mess with any firewall settings to get it set up.

Gotcha. The issue for me is that there is no connection established. I'm using a 2019 MacBook Pro with Ethernet adapter. I bought 3 adapters (2 apple and 1 Belkin). I even tried disconnecting the battery per BM3 troubleshoot steps. So far, nothing has worked.

I get the new cable today so fingers crossed.

[todd92]

I'm using Windows and I did not have to disable firewalls or any other software. BM3 accessed via Chrome.

[mokhan54]

Originally Posted by todd92

I'm using Windows and I did not have to disable firewalls or any other software. BM3 accessed via Chrome.

Don't you access BM3 through their desktop software to install the tune?