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Technical Topics B48 4-Cylinder Turbo Engine / Drivetrain / Exhaust Modifications Who has the quickest G20 330i on Bimmerpost?

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      01-02-2021, 04:13 AM   #67
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Quote:
Originally Posted by JTYAMSHAYIN View Post
Going to start making a few comparison tests for myself.

First probably doing a comparison from stock with runflats to stock with PS4S. Then I'll add JB+ and possibly some other piggy back or tunes into the runs from 0-60 and 1/4 Mile. Whats a decently reliable product to time these runs in the US?
As I pin mentioned draggy is quite good, vbox is good as well but twice the price even if you buy used. The vbox has much more functionality for if u go track days and stuff.
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      01-02-2021, 01:00 PM   #68
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Originally Posted by Knifeedge2k1 View Post
All speedos generally run 3%optimistic so your 0to 60 is also slightly optimistic
Very true. Mine showed similar times with a JB+. Maybe even like a 4.9s speedo reading though in reality, it was more like 5.2s (if only I had a dragy then).

Quote:
Originally Posted by Knifeedge2k1 View Post
The stock turbos are pretty small, spool up is not negligible but it’s not super significant either. It’s more about getting into the rev range where it is safe to make boost/torque (as opposed to eliminating spoolup time).
Again. One learns something new everyday. I had no idea about all that. Clearly I'm an ultra-noob It's nice to learn new things daily though!

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Originally Posted by Knifeedge2k1 View Post
As I pin mentioned draggy is quite good, vbox is good as well but twice the price even if you buy used. The vbox has much more functionality for if u go track days and stuff.
100% true. I've never been to a track and I probably won't (unless there is a good one near me that's within two hours of driving one way). So I've never considered a VBOX or Racebox. Where I live at now, it's arrow straight roads for miles with the occasional ups and downs. Which is why a dragy works best for me
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      01-02-2021, 07:31 PM   #69
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I'm thinking of getting a dragy myself as there are no tracks in Hong Kong (but plenty of twisties)

Thing is I don't really care about super accurate acceleration figures, so maybe the logging feature in jb4 is good enough for me

shrugz

Quote:
Originally Posted by VipinLJ View Post
Very true. Mine showed similar times with a JB+. Maybe even like a 4.9s speedo reading though in reality, it was more like 5.2s (if only I had a dragy then).



Again. One learns something new everyday. I had no idea about all that. Clearly I'm an ultra-noob It's nice to learn new things daily though!



100% true. I've never been to a track and I probably won't (unless there is a good one near me that's within two hours of driving one way). So I've never considered a VBOX or Racebox. Where I live at now, it's arrow straight roads for miles with the occasional ups and downs. Which is why a dragy works best for me
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      01-02-2021, 10:50 PM   #70
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Quote:
Originally Posted by VipinLJ View Post
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Originally Posted by G20_abc View Post
Dragy time
Was that with or without LC?
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Originally Posted by VipinLJ View Post
Quote:
Originally Posted by G20_abc View Post
Dragy time
Was that with or without LC?
This was without launch control
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      01-04-2021, 06:22 PM   #71
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Quote:
Originally Posted by Knifeedge2k1 View Post


I'm thinking of getting a dragy myself as there are no tracks in Hong Kong (but plenty of twisties)

Thing is I don't really care about super accurate acceleration figures, so maybe the logging feature in jb4 is good enough for me

shrugz
If you don't want GPS verified acceleration numbers, the JB4 app works just fine. It shows readings from the ECU and calculates the time from there. It is pretty consistent (though not accurate compared to GPS numbers). I find that adding around 0.3-0.4s usually gives you corresponding GPS numbers.

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Originally Posted by G20_abc View Post
This was without launch control
Wowzer. 5.67s without LC and slight uphill is crazy! My stock xDrive was definitely slower! I keep wanting to do a stock run but I can't stop myself from tanking up with some E85.
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      01-06-2021, 05:30 PM   #72
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Temp - 35°F
Fuel - ~E25 (3/4th tank) winter fuel
Tyres - Michelin PS A/S 3+
No weight reduction. Car was driven hard before doing the run below (no cool down period).
Mods - JB4 on custom map 6

This car definitely loves the cold more than others I own/owned. Runs done on the same private road I always do my runs on.

PS - Trap speed at the quarter mile was 106.41MPH.
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      01-06-2021, 07:14 PM   #73
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Quote:
Originally Posted by VipinLJ View Post
Temp - 35°F
Fuel - ~E25 (3/4th tank) winter fuel
Tyres - Michelin PS A/S 3+
No weight reduction. Car was driven hard before doing the run below (no cool down period).
Mods - JB4 on custom map 6

This car definitely loves the cold more than others I own/owned. Runs done on the same private road I always do my runs on.

PS - Trap speed at the quarter mile was 106.41MPH.
100-200kph is 12s for a stock 340i xdrive so you're ALMOST there!!!
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      01-06-2021, 08:20 PM   #74
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Quote:
Originally Posted by VipinLJ View Post
Temp - 35°F
Fuel - ~E25 (3/4th tank) winter fuel
Tyres - Michelin PS A/S 3+
No weight reduction. Car was driven hard before doing the run below (no cool down period).
Mods - JB4 on custom map 6

This car definitely loves the cold more than others I own/owned. Runs done on the same private road I always do my runs on.

PS - Trap speed at the quarter mile was 106.41MPH.
That 1/4 mile time is faster than the F30 340. Impressive.
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      01-06-2021, 10:16 PM   #75
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Originally Posted by Knifeedge2k1 View Post
100-200kph is 12s for a stock 340i xdrive so you're ALMOST there!!!
It isn't bad at all!!! All thanks to you! I think that's probably the best it can do without any hardware mods. Maybe a DP and some other stuff and it should break into the 12.xxs quarter mile and low 13s 100-200.

Quote:
Originally Posted by bquatt View Post
That 1/4 mile time is faster than the F30 340. Impressive.
Yes it is. The quarter mile actually surprised me. I wasn't expecting these times compared to the stock 13.9-14.1 I got a long time ago. A JB4 and some magic from Knifeedge2k1 made this stage 1(-) car a beast!
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      01-08-2021, 10:43 PM   #76
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Quote:
Originally Posted by StevenDS85 View Post
The 330i is quick enough :-)
Since you're in Germany, your car is not electronically limited to less than 249kph like in the States?
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      01-08-2021, 10:56 PM   #77
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Since you're in Germany, your car is not electronically limited to less than 249kph like in the States?
I believe cars have electronic speed limiters only in NA. I know they don't have it in Asia.
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      01-09-2021, 08:24 AM   #78
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Quote:
Originally Posted by VipinLJ View Post
It isn't bad at all!!! All thanks to you! I think that's probably the best it can do without any hardware mods. Maybe a DP and some other stuff and it should break into the 12.xxs quarter mile and low 13s 100-200.



Yes it is. The quarter mile actually surprised me. I wasn't expecting these times compared to the stock 13.9-14.1 I got a long time ago. A JB4 and some magic from Knifeedge2k1 made this stage 1(-) car a beast!
Great results!! Do you mind sharing the map/psi values you are using on JB4?
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      01-09-2021, 10:37 AM   #79
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Great results!! Do you mind sharing the map/psi values you are using on JB4?
Check this post below

https://g20.bimmerpost.com/forums/sh...0&postcount=50

All credits to Knifeedge2k1 for fine tuning my Jb4 for me!! He’s been of immense help.
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      01-09-2021, 11:34 AM   #80
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Quote:
Originally Posted by VipinLJ View Post
Check this post below

https://g20.bimmerpost.com/forums/sh...0&postcount=50

All credits to Knifeedge2k1 for fine tuning my Jb4 for me!! He’s been of immense help.
Awesome, thanks. Did you find much difference between the custom map 6 and maps 2 and 3?
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      01-09-2021, 12:05 PM   #81
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Awesome, thanks. Did you find much difference between the custom map 6 and maps 2 and 3?
Oh yes. The differences are based on my dragy runs.

Quarter mile runs using launch control and E25-E27 fuel:
On map 2, it was 13.50s (did only one run once a long time ago)
On map 3, it was between 13.28-13.41 (best and worst times - usually around 13.35). I did get a 13.15s ONLY once though.
On map 6, it is between 13.05-13.17 (best and worst times - usually around 13.12).
On map 0, it was 14.1-14.3 (best and worst times).

Edit - I know a lot of people have gotten 13.6-13.7s stock times. Which is why I've always thought there was something wrong with my car being so slow stock But the latest map 0 run was done yesterday and 14.3s@96.4mph was what I got

Edit 2 - The 13.9s stock number I mentioned in a previous post was a mistake. That was actually the time for a WOT run in map 3 I got a while back (which I mistook for a stock run when I was going through my dragy results). WOT runs with map 6 are significantly faster (13.3-13.4s).
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      01-09-2021, 12:28 PM   #82
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Quote:
Originally Posted by VipinLJ View Post
Oh yes. The differences are based on my dragy runs.

Quarter mile runs using launch control and E25-E27 fuel:
On map 2, it was 13.50s (did only one run once a long time ago)
On map 3, it was between 13.28-13.41 (best and worst times - usually around 13.35). I did get a 13.15s ONLY once though.
On map 6, it is between 13.05-13.17 (best and worst times - usually around 13.12).
On map 0, it was 14.1-14.3 (best and worst times).

Edit - I know a lot of people have gotten 13.6-13.7s stock times. Which is why I've always thought there was something wrong with my car being so slow stock But the latest map 0 run was done yesterday and 14.3s@96.4mph was what I got

Edit 2 - The 13.9s stock number I mentioned in a previous post was a mistake. That was actually the time for a WOT run in map 3 I got a while back (which I mistook for a stock run when I was going through my dragy results). WOT runs with map 6 are significantly faster (13.3-13.4s).
That's a big difference. It's curious to know why the difference between map 3 and 6, since map 3 is +6 psi, and your custom map 6 looks to be around that number too from what I can see. Or am I seeing it wrong?
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      01-09-2021, 03:38 PM   #83
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Quote:
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That's a big difference. It's curious to know why the difference between map 3 and 6, since map 3 is +6 psi, and your custom map 6 looks to be around that number too from what I can see. Or am I seeing it wrong?
Peak boost was same in both maps. But map 6 seems to push more boost all across the RPM range. Honestly the person to ask would be Knifeedge2k1 since he's the one who gave me those numbers after looking at all my logs. When I drive normally, there isn't much of a difference between 3 and 6 except 6 feels slightly punchier and smoother. When I drive spiritedly, even in the city (WOT red light starts when it's safe), map 6 feels much better.
WOT quarter mile times on map 6 are only slightly slower than LC quarter mile times on map 3. That's how good map 6 is.
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      01-09-2021, 04:52 PM   #84
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Quote:
Originally Posted by VipinLJ View Post
Peak boost was same in both maps. But map 6 seems to push more boost all across the RPM range. Honestly the person to ask would be Knifeedge2k1 since he's the one who gave me those numbers after looking at all my logs. When I drive normally, there isn't much of a difference between 3 and 6 except 6 feels slightly punchier and smoother. When I drive spiritedly, even in the city (WOT red light starts when it's safe), map 6 feels much better.
WOT quarter mile times on map 6 are only slightly slower than LC quarter mile times on map 3. That's how good map 6 is.
That's awesome. Map 6 probably changes the shape of the stock torque curve giving it more boost in some areas than map 3, while map 3 just raises the stock curve. Both have the same max boost/torque, but your map 6 probably has a higher "area under the curve".

I'm still waiting for my draggy but still no luck. It's been shipped from the UK, and my tracking number has been stuck on the same location for 7 days because of Brexit related delays. I was hoping to get it before the tuning box arrives to test the stock 0-100 and 1/4 mile, but I think the box will arrive first.
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      01-09-2021, 05:50 PM   #85
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Originally Posted by vTuga View Post
That's awesome. Map 6 probably changes the shape of the stock torque curve giving it more boost in some areas than map 3, while map 3 just raises the stock curve. Both have the same max boost/torque, but your map 6 probably has a higher "area under the curve".

I'm still waiting for my draggy but still no luck. It's been shipped from the UK, and my tracking number has been stuck on the same location for 7 days because of Brexit related delays. I was hoping to get it before the tuning box arrives to test the stock 0-100 and 1/4 mile, but I think the box will arrive first.
Yes. That is what my guess is as well!

I’m assuming you got the Ventura box? And try and not install it as soon as you get it I’d love to see some before and after numbers!! I know the itch will be terrible though.
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      01-09-2021, 06:25 PM   #86
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Yes. That is what my guess is as well!

I’m assuming you got the Ventura box? And try and not install it as soon as you get it I’d love to see some before and after numbers!! I know the itch will be terrible though.
Yes I ordered the ventura. It should arrive early next week. Though I'm starting to wonder if I should have gotten the JB4 instead. It gives much more control over the numbers. But ordering from the US would be such a hassle, with customs and taxes and all that. Let's see, from what I read ventura is probably the next best thing.

I'll try not to install it before I get the draggy. I want to make the measurements before it's installed to make a fair assessment of the gains with the box.
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      01-09-2021, 11:25 PM   #87
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Yes I ordered the ventura. It should arrive early next week. Though I'm starting to wonder if I should have gotten the JB4 instead. It gives much more control over the numbers. But ordering from the US would be such a hassle, with customs and taxes and all that. Let's see, from what I read ventura is probably the next best thing.

I'll try not to install it before I get the draggy. I want to make the measurements before it's installed to make a fair assessment of the gains with the box.
Yes. I'm actually thinking of removing the JB4 too and doing a couple of dragy runs to see if I can get better times. Sometimes, I think, in map 0, the car actually feels slower than stock (probably just in my head).
And yes. The Ventura box is quite expensive. I got the JB4 used, for a great deal. So pleased with it. But yes. I hope the Ventura is similar too.
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      01-10-2021, 08:36 AM   #88
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Originally Posted by VipinLJ View Post
Yes. I'm actually thinking of removing the JB4 too and doing a couple of dragy runs to see if I can get better times. Sometimes, I think, in map 0, the car actually feels slower than stock (probably just in my head).
And yes. The Ventura box is quite expensive. I got the JB4 used, for a great deal. So pleased with it. But yes. I hope the Ventura is similar too.
Yes I think I've heard that the map 0 is not quite the same as stock. If you end up doing that, please share the results.

From what I saw online, ventura has a peak boost of +5psi, so it might not reach the same level of performance as JB4.
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