[hamzag20]

Originally Posted by Razor2010

5.3 per BMW USA, see below. Makes you wonder what the net result of that JB+ really is.....maybe just turning up the boost and the engine pulls timing and dumps in more fuel to protect itself leading to a net result of no more power really than stock. Very interesting.

Welp.

[Razor2010]

Originally Posted by hamzag20

Welp.

Don’t shoot the messenger - I am just providing a possible scenario, maybe there are real world gains, don’t know. Will be interesting to see how all this plays out over the next few months.

I would love to see real world, full data logs of stock and JB+ cars in various climates and conditions and see what is really going on. This all really brings me back to my Subaru Sti7 days. Would have never thought almost two decades after I would be back in a 2 litre turbo - ia bmw 3 series 2 litre turbo to say the least LOL.

[VipinLJ]

The 5.2s I mentioned was measured by the obdlink app I got along with the dongle I bought. This run was done yesterday with a full tank of fuel and my wife along with me (was using the app for the very first time and wanted to see how it worked). Also, this was done on a road that has a slight uphill incline. Not a flat road. This is the same road on which I did speedometer recordings a few weeks ago and posted on here. Same road on which I also tested my A4 (but I was the only person in the car then). I know the app isn’t probably right since it reads the ecu speed (which was around 2mph less than what was shown on the speedometer since the speedometer in BMWs has a correction factor or something to show an increased speed). Maybe I should stop being lazy and also do a run with the JB+ removed to see how much of a difference it makes (no scientific data or proper data logging - just using the same app for a before and after, if any).

Edit - Posted a screenshot from the app. Like I said. It isn’t scientific or official or anything. Purely for a before and after. I’ll remove the JB+ and do another run in a few days (temp yesterday was around 28F and this coming week, it is in the 50s starting today).

[hamzag20]

Originally Posted by VipinLJ

The 5.2s I mentioned was measured by the obdlink app I got along with the dongle I bought. This run was done yesterday with a full tank of fuel and my wife along with me (was using the app for the very first time and wanted to see how it worked). Also, this was done on a road that has a slight uphill incline. Not a flat road. This is the same road on which I did speedometer recordings a few weeks ago and posted on here. Same road on which I also tested my A4 (but I was the only person in the car then). I know the app isn't probably right since it reads the ecu speed (which was around 2mph less than what was shown on the speedometer since the speedometer in BMWs has a correction factor or something to show an increased speed). Maybe I should stop being lazy and also do a run with the JB+ removed to see how much of a difference it makes (no scientific data or proper data logging - just using the same app for a before and after, if any).

Edit - Posted a screenshot from the app. Like I said. It isn't scientific or official or anything. Purely for a before and after. I'll remove the JB+ and do another run in a few days (temp yesterday was around 28F and this coming week, it is in the 50s starting today).

Alright great. I'll look forward to ur results.

[VipinLJ]

Originally Posted by hamzag20

Alright great. I'll look forward to ur results.

I’m looking forward to it too!

Btw, I’ve gone through many videos on YouTube where they’ve done dragy tests for the G20 330i and almost all of them have a 5.7-5.9s 0-100kmph, which sounds about right. Looks like BMW overrated the 0-60 of 5.3s.
I even found a nice video by cars.com where they’ve taken both the G20s. Compared to their numbers, my numbers are definitely an improvement.

https://www.youtube.com/watch?v=LREhX9GvQqU

[hamzag20]

Originally Posted by VipinLJ

I'm looking forward to it too!

Btw, I've gone through many videos on YouTube where they've done dragy tests for the G20 330i and almost all of them have a 5.7-5.9s 0-100kmph, which sounds about right. Looks like BMW overrated the 0-60 of 5.3s.
I even found a nice video by cars.com where they've taken both the G20s. Compared to their numbers, my numbers are definitely an improvement.

https://www.youtube.com/watch?v=LREhX9GvQqU

Wow never expected BMW to overrate their 0-60 times considering their past history of underrating their cars. But yeah if the times for the 330i are around 5.6-5.7 then buying the JB+ does make sense.

[Razor2010]

Originally Posted by hamzag20

Wow never expected BMW to overrate their 0-60 times considering their past history of underrating their cars. But yeah if the times for the 330i are around 5.6-5.7 then buying the JB+ does make sense.

0-60 mph is different than 0-100 KMH = 0-62 mph.

[hamzag20]

Originally Posted by Razor2010

0-60 mph is different than 0-100 KMH = 0-62 mph.

Yes, I know 0-100 kmph is 0-62 mph lol but basically almost the same measurement.

[VipinLJ]

Originally Posted by hamzag20

Wow never expected BMW to overrate their 0-60 times considering their past history of underrating their cars. But yeah if the times for the 330i are around 5.6-5.7 then buying the JB+ does make sense.

Same here. I was surprised. But then. When there are lots of YouTube videos from Europe, Australia and America claiming the 330i does the 0-62 in 5.7-5.9s, I don’t think all of them can be wrong

Originally Posted by Razor2010

0-60 mph is different than 0-100 KMH = 0-62 mph.

Yup. That’s a difference of roughly 0.2s. Still in the 5.5-5.7s range for 0-60.

[Razor2010]

Originally Posted by hamzag20

Yes, I know 0-100 kmph is 0-62 mph lol but basically almost the same measurement.

I guess my point was, BMW didn't over-rate. Their quoted time of 0-60 mph is 5.3 which translates into roughly a 5.7 0-100 KHM / 0-62 MPH time.

[VipinLJ]

Originally Posted by Razor2010

I guess my point was, BMW didn't over-rate. Their quoted time of 0-60 mph is 5.3 which translates into roughly a 5.7 0-100 KHM / 0-62 MPH time.

Oh gotcha. That makes sense. But for their other cars, they’ve always underrated the times. I was hoping it was something similar for our 330is too. The A4 is quoted at 5.7s 0-60 but there are multiple reports of people doing 5.0s with the stock car. And there are some crazy tunes out there too. The fastest stage 3 (obviously turbo and other mods present) A4 I know does the quarter mile in 11.6s. 0-60 in 3.6s. Haven’t seen any B48 engined car doing those numbers even with turbo mods.
My ideal 2.0l car would be a car with the Audi 2.0l engine and handling dynamics of the G20.

[Razor2010]

Originally Posted by VipinLJ

Oh gotcha. That makes sense. But for their other cars, they’ve always underrated the times. I was hoping it was something similar for our 330is too. The A4 is quoted at 5.7s 0-60 but there are multiple reports of people doing 5.0s with the stock car. And there are some crazy tunes out there too. The fastest stage 3 (obviously turbo and other mods present) A4 I know does the quarter mile in 11.6s. 0-60 in 3.6s. Haven’t seen any B48 engined car doing those numbers even with turbo mods.
My ideal 2.0l car would be a car with the Audi 2.0l engine and handling dynamics of the G20.

Do an engine swap!

[VipinLJ]

Originally Posted by Razor2010

Do an engine swap!

If only it was that easy people reading this will probably be wondering why I don’t just buy an S4/M340i or whatever. It’s because, having driven those cars, I can’t believe people manage to drive it at 80MPH and control the itch to go full throttle! Hell even with the cars in my garage, the urge to go pedal to the metal is bad. With the M340i and the likes, I’ll probably have spent a few days in jail now and my car impounded. I got an unbelievable offer on a new M550i purchase but didn’t go through because of the same reason. My wife was like “There’s no way you’re buying the car now. I don’t want to run around searching for lawyers and bail money.” After our baby comes, she’ll let me since she knows I’ll be driving slow then.

[Razor2010]

Originally Posted by VipinLJ

If only it was that easy people reading this will probably be wondering why I don’t just buy an S4/M340i or whatever. It’s because, having driven those cars, I can’t believe people manage to drive it at 80MPH and control the itch to go full throttle! Hell even with the cars in my garage, the urge to go pedal to the metal is bad. With the M340i and the likes, I’ll probably have spent a few days in jail now and my car impounded. I got an unbelievable offer on a new M550i purchase but didn’t go through because of the same reason. My wife was like “There’s no way you’re buying the car now. I don’t want to run around searching for lawyers and bail money.” After our baby comes, she’ll let me since she knows I’ll be driving slow then.

Be safe out there

[VipinLJ]

Did a few runs today under very similar conditions a few hours apart. First few runs were done with the JB+. Second set of runs were done a few hours later without the JB+ and after driving the car around for a bit in case it needed to adapt. The runs were done on the exact same road from the exact same starting point. The road has a noticeable upward incline and is not flat. Temperature was 45F for the JB+ run and 46F for the stock run. My car doesn't show a launch control symbol. Both runs were done by brake boosting to slightly over 3000 rpms. Car in sport plus. Transmission in S. DSC off. Only one person in the car (me). Full tank of 93RON fuel. Results from my OBD device below (surprisingly, it performed almost consistently during both sets of runs).

Before anyone decides to flame me for not using a dragy or official timing gear. Reason is I don't have any with me. That's why. A friend has a dragy and we compared my OBD device on his Audi A5 a few days back and found only a difference of 0.1-0.15s for the quarter mile on different runs (both dragy and my device running simultaneously). Irrespective, it's a before and after comparison for me and not official numbers.
Also, i have done some adaptations on the obdlink app to account for speedometer error. I might have overdone it. With the adaptations, when the car speedometer shows 65-66mph, the app shows 60mph. Before i did the adaptations, when the car showed 62-63mph, the app showed 60mph.

Below are the numbers in case anyone is interested.

TL;DR - The JB+ works. Without the jb+, the car is very linear. Zero turbo lag. With the jb+, car feels the same as stock till around 2000-2500rpms. But post that, it lifts up it's nose and takes off.

[Razor2010]

Originally Posted by VipinLJ

Did a few runs today under very similar conditions a few hours apart. First few runs were done with the JB+. Second set of runs were done a few hours later without the JB+ and after driving the car around for a bit in case it needed to adapt. The runs were done on the exact same road from the exact same starting point. The road has a noticeable upward incline and is not flat. Temperature was 45F for the JB+ run and 46F for the stock run. My car doesn't show a launch control symbol. Both runs were done by brake boosting to slightly over 3000 rpms. Car in sport plus. Transmission in S. DSC off. Only one person in the car (me). Full tank of 93RON fuel. Results from my OBD device below (surprisingly, it performed almost consistently during both sets of runs).

Before anyone decides to flame me for not using a dragy or official timing gear. Reason is I don't have any with me. That's why. A friend has a dragy and we compared my OBD device on his Audi A5 a few days back and found only a difference of 0.1-0.15s for the quarter mile on different runs (both dragy and my device running simultaneously). Irrespective, it's a before and after comparison for me and not official numbers.
Also, i have done some adaptations on the obdlink app to account for speedometer error. I might have overdone it. With the adaptations, when the car speedometer shows 65-66mph, the app shows 60mph. Before i did the adaptations, when the car showed 62-63mph, the app showed 60mph.

Below are the numbers in case anyone is interested.

TL;DR - The JB+ works. Without the jb+, the car is very linear. Zero turbo lag. With the jb+, car feels the same as stock till around 2000-2500rpms. But post that, it lifts up it's nose and takes off.

Thank you for doing this and posting.

A second off 0-60 mph is pretty impressive.

[VipinLJ]

Originally Posted by Razor2010

Thank you for doing this and posting.

A second off 0-60 mph is pretty impressive.

You’re welcome!

And I was surprised too. I had gotten used to the power of the JB+ till I took it off. Car didn’t have that oomph and it was noticeable. Put it back on and I was surprised at how obvious the difference was. I can’t imagine how much better a tune would be!

[hamzag20]

Originally Posted by VipinLJ

Did a few runs today under very similar conditions a few hours apart. First few runs were done with the JB+. Second set of runs were done a few hours later without the JB+ and after driving the car around for a bit in case it needed to adapt. The runs were done on the exact same road from the exact same starting point. The road has a noticeable upward incline and is not flat. Temperature was 45F for the JB+ run and 46F for the stock run. My car doesn't show a launch control symbol. Both runs were done by brake boosting to slightly over 3000 rpms. Car in sport plus. Transmission in S. DSC off. Only one person in the car (me). Full tank of 93RON fuel. Results from my OBD device below (surprisingly, it performed almost consistently during both sets of runs).

Before anyone decides to flame me for not using a dragy or official timing gear. Reason is I don't have any with me. That's why. A friend has a dragy and we compared my OBD device on his Audi A5 a few days back and found only a difference of 0.1-0.15s for the quarter mile on different runs (both dragy and my device running simultaneously). Irrespective, it's a before and after comparison for me and not official numbers.
Also, i have done some adaptations on the obdlink app to account for speedometer error. I might have overdone it. With the adaptations, when the car speedometer shows 65-66mph, the app shows 60mph. Before i did the adaptations, when the car showed 62-63mph, the app showed 60mph.

Below are the numbers in case anyone is interested.

TL;DR - The JB+ works. Without the jb+, the car is very linear. Zero turbo lag. With the jb+, car feels the same as stock till around 2000-2500rpms. But post that, it lifts up it's nose and takes off.

Thanks for this! Glad to hear that the JB+ does make a difference. I'll be ordering a JB+ soon and I'll also make sure to get a dragy so we can some diversity in results!

[VipinLJ]

Originally Posted by hamzag20

Thanks for this! Glad to hear that the JB+ does make a difference. I'll be ordering a JB+ soon and I'll also make sure to get a dragy so we can some diversity in results!

Dragy results will be more official! Those things are really good and are almost spot on compared to a drag strip time. Do let us know when you order them.

[xlpacman805]

The sport gauges are probably calculated and have maximum. It's a gimmick in my opinion. If you get the JB4 Bluetooth connector kit and app you can change the maps from your phone and see your boost gauge.

Map 2, is the best one for the 330i in my opinion. It'll throw you in your seat. Map 3 if you're not on 93 octane will run lean which is not good for the life of the engine.

I'm here because with the app I can create my own map but I don't know where to start, what's unsafe and best tuning practices. If anyone can point me in the right direction I'd appreciate it.

I also want to eventually run a methanol injection setup that's compatible with JB4 but I run into the same issue. I'll need to do some custom mapping and I don't know where to start.

[VipinLJ]

Originally Posted by xlpacman805

The sport gauges are probably calculated and have maximum. It's a gimmick in my opinion. If you get the JB4 Bluetooth connector kit and app you can change the maps from your phone and see your boost gauge.

Map 2, is the best one for the 330i in my opinion. It'll throw you in your seat. Map 3 if you're not on 93 octane will run lean which is not good for the life of the engine.

I'm here because with the app I can create my own map but I don't know where to start, what's unsafe and best tuning practices. If anyone can point me in the right direction I'd appreciate it.

I also want to eventually run a methanol injection setup that's compatible with JB4 but I run into the same issue. I'll need to do some custom mapping and I don't know where to start.

You're running a jb4 now?

And yes. The sport gauges are gimmicks.

[xlpacman805]

Originally Posted by VipinLJ

You're running a jb4 now?

And yes. The sport gauges are gimmicks.

Yes sir I'm running the JB4 on my G20 330i with the Bluetooth connectivity kit and mobile app. If you get it don't bother with the OBD2 connector because the dashboard menu isn't supported.

I'm close enough to Burger Tuning that I bought and picked it up the JB4 the same day. There was all kinds of cool cars in that parking lot like an i8, some AMG, and a Corvette.