Bimmerpost
BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read
Technical Topics B48 4-Cylinder Turbo Engine / Drivetrain / Exhaust Modifications JB+ on G20 First Impressions

Post Reply
 
Thread Tools Search this Thread
      02-20-2020, 03:11 PM   #155
Razor2010
Private First Class
34
Rep
147
Posts

Drives: 2020 G20 330i M-Sport - M-LSD
Join Date: Mar 2010
Location: Caribbean

iTrader: (0)

Quote:
Originally Posted by VipinLJ View Post
I read threads where they say the N20 engine turbos had a limit of around 23-24psi. Iím assuming the B46/48 is somewhere in that range too (?). With the JB+, I believe stock boost would just about touch 19psi? I tried searching how much boost the B46 produces but couldnít find any data.
Honestly, there are so many variables it is very hard to say. What I find VERY interesting is how much 'progress' have we really made engine wise over the last 20-30 years? Perhaps direct injection, maybe some weight savings? Look what Mitsubishi, Subaru and others were doing with stock 2 litre turbo engines decades ago.

Pumping more than 20 psi in an engine with stock internals, fairly high compression, and a relatively lean AFR seems like a recipe for disaster in my understanding but I am by no means an expert
Appreciate 0
      02-20-2020, 05:40 PM   #156
hamzag20
Private
41
Rep
96
Posts

Drives: BMW G20 330i, BMW G30 540i
Join Date: Aug 2019
Location: Missouri

iTrader: (0)

Quote:
Originally Posted by Razor2010 View Post
Quote:
Originally Posted by VipinLJ View Post
I read threads where they say the N20 engine turbos had a limit of around 23-24psi. I’m assuming the B46/48 is somewhere in that range too (?). With the JB+, I believe stock boost would just about touch 19psi? I tried searching how much boost the B46 produces but couldn’t find any data.
Honestly, there are so many variables it is very hard to say. What I find VERY interesting is how much 'progress' have we really made engine wise over the last 20-30 years? Perhaps direct injection, maybe some weight savings? Look what Mitsubishi, Subaru and others were doing with stock 2 litre turbo engines decades ago.

Pumping more than 20 psi in an engine with stock internals, fairly high compression, and a relatively lean AFR seems like a recipe for disaster in my understanding but I am by no means an expert
Damn haha now I'm rlly confused as to whether I should get a JB+.
Appreciate 0
      02-20-2020, 05:46 PM   #157
Razor2010
Private First Class
34
Rep
147
Posts

Drives: 2020 G20 330i M-Sport - M-LSD
Join Date: Mar 2010
Location: Caribbean

iTrader: (0)

Quote:
Originally Posted by hamzag20 View Post
Damn haha now I'm rlly confused as to whether I should get a JB+.
My best Ďguessí would be if you have 98+ RON fuel, weather that is 75íF or lower year round and donít track your car you should be fine. Let your car warm up properly before hitting it hard and let her cool down before shutting off after a good thrashing and you will probably be OK. But, the fuel and weather are key variables if you want to just turn up the boost 3-5 psi.

In my humble opinion of course.
Appreciate 0
      02-20-2020, 05:55 PM   #158
VipinLJ
Petrolhead
VipinLJ's Avatar
United_States
291
Rep
971
Posts

Drives: Ď20 330i,Ď16 X3,Ď18 SQ5,Ď17 A7
Join Date: Nov 2019
Location: Illinois

iTrader: (1)

Quote:
Originally Posted by Razor2010 View Post
My best Ďguessí would be if you have 98+ RON fuel, weather that is 75íF or lower year round and donít track your car you should be fine. Let your car warm up properly before hitting it hard and let her cool down before shutting off after a good thrashing and you will probably be OK. But, the fuel and weather are key variables if you want to just turn up the boost 3-5 psi.

In my humble opinion of course.
That is me. I remote start my car and let her idle for atleast a minute or two. I even drive around like a granny for a few minutes before driving fast. I also drive around like a granny for a few minutes before the car turns off. No racing or tracking for me.
__________________
Current:
2020 BMW 330i xDrive
2018 Audi SQ5 Prestige
2017 Audi A7 Prestige
2016 BMW X3 xDrive28i
Appreciate 0
      02-20-2020, 08:18 PM   #159
Razor2010
Private First Class
34
Rep
147
Posts

Drives: 2020 G20 330i M-Sport - M-LSD
Join Date: Mar 2010
Location: Caribbean

iTrader: (0)

Quote:
Originally Posted by VipinLJ View Post
That is me. I remote start my car and let her idle for atleast a minute or two. I even drive around like a granny for a few minutes before driving fast. I also drive around like a granny for a few minutes before the car turns off. No racing or tracking for me.
Good stuff!
Appreciate 0
      02-20-2020, 09:00 PM   #160
hamzag20
Private
41
Rep
96
Posts

Drives: BMW G20 330i, BMW G30 540i
Join Date: Aug 2019
Location: Missouri

iTrader: (0)

Quote:
Originally Posted by Razor2010 View Post
Quote:
Originally Posted by hamzag20 View Post
Damn haha now I'm rlly confused as to whether I should get a JB+.
My best ‘guess’ would be if you have 98+ RON fuel, weather that is 75’F or lower year round and don’t track your car you should be fine. Let your car warm up properly before hitting it hard and let her cool down before shutting off after a good thrashing and you will probably be OK. But, the fuel and weather are key variables if you want to just turn up the boost 3-5 psi.

In my humble opinion of course.
Ya of course I only put 93 rating Costco gas in my car and treat it like my baby haha. I also don't take the Revs above 3k rpm for a few minutes on cold starts. Just super confused between JB+ and BM3 since I'm on a lease. I might just go for JB+ tbh.
Appreciate 0
      02-21-2020, 01:37 AM   #161
sspdw
Private
44
Rep
76
Posts

Drives: bmw m140
Join Date: Apr 2019
Location: sweden

iTrader: (0)

Quote:
Originally Posted by hamzag20 View Post
Ya of course I only put 93 rating Costco gas in my car and treat it like my baby haha. I also don't take the Revs above 3k rpm for a few minutes on cold starts. Just super confused between JB+ and BM3 since I'm on a lease. I might just go for JB+ tbh.
If youre on a tune you should make sure to change that 0w20, i would go for a 0w30/5w30/0w40. If youre in hot climate a 5w40 would be my pick.
Appreciate 0
      02-21-2020, 06:10 AM   #162
Razor2010
Private First Class
34
Rep
147
Posts

Drives: 2020 G20 330i M-Sport - M-LSD
Join Date: Mar 2010
Location: Caribbean

iTrader: (0)

Quote:
Originally Posted by sspdw View Post
If youre on a tune you should make sure to change that 0w20, i would go for a 0w30/5w30/0w40. If youre in hot climate a 5w40 would be my pick.
Now we really opened a can of worms
Appreciate 0
      02-21-2020, 08:27 AM   #163
sspdw
Private
44
Rep
76
Posts

Drives: bmw m140
Join Date: Apr 2019
Location: sweden

iTrader: (0)

Quote:
Originally Posted by Razor2010 View Post
Now we really opened a can of worms
Haha well i flushed that 0w20 after 4000km, its only there because of Co2 emissions. Im currently using ravenol 5w30 PAO and will be changing oil every 10000km.
Appreciate 0
      02-21-2020, 08:31 AM   #164
Razor2010
Private First Class
34
Rep
147
Posts

Drives: 2020 G20 330i M-Sport - M-LSD
Join Date: Mar 2010
Location: Caribbean

iTrader: (0)

Quote:
Originally Posted by sspdw View Post

Haha well i flushed that 0w20 after 4000km, its only there because of Co2 emissions. Im currently using ravenol 5w30 PAO and will be changing oil every 10000km.
Yes, I would imagine these super light weight oils are mainly there for fuel economy and emissions stuff, can't fathom how these can be better for the engine life.

However, this is a very deep rabbit hole and I don't think I will switch from the manufacturers recommended because there are so many variables in oil weights and their ingredients that it boggles the mind.
Appreciate 0
      02-21-2020, 12:35 PM   #165
sspdw
Private
44
Rep
76
Posts

Drives: bmw m140
Join Date: Apr 2019
Location: sweden

iTrader: (0)

Quote:
Originally Posted by Razor2010 View Post
Yes, I would imagine these super light weight oils are mainly there for fuel economy and emissions stuff, can't fathom how these can be better for the engine life.

However, this is a very deep rabbit hole and I don't think I will switch from the manufacturers recommended because there are so many variables in oil weights and their ingredients that it boggles the mind.
How is it a rabbit hole? The B58 and B48 can use 0w20 0w30 0w40 5w30 and 5w40 LL04/01. LL04 if europe and LL01 in other places like the USA. Tuned i would want a higher HTHS oil than 0w20.
Appreciate 0
      02-21-2020, 01:37 PM   #166
Razor2010
Private First Class
34
Rep
147
Posts

Drives: 2020 G20 330i M-Sport - M-LSD
Join Date: Mar 2010
Location: Caribbean

iTrader: (0)

Quote:
Originally Posted by sspdw View Post
How is it a rabbit hole? The B58 and B48 can use 0w20 0w30 0w40 5w30 and 5w40 LL04/01. LL04 if europe and LL01 in other places like the USA. Tuned i would want a higher HTHS oil than 0w20.
Fair enough, didn't realize the manufacturer listed all those as options. Can you please provide me with a link so I can read up on that?

Cheers
Appreciate 0
      02-21-2020, 05:32 PM   #167
sspdw
Private
44
Rep
76
Posts

Drives: bmw m140
Join Date: Apr 2019
Location: sweden

iTrader: (0)

Quote:
Originally Posted by Razor2010 View Post
Fair enough, didn't realize the manufacturer listed all those as options. Can you please provide me with a link so I can read up on that?

Cheers
You should be able to find information in your manual.
Try Google translate on Oil-club.de and you will find some helpful information.
Appreciate 0
      02-21-2020, 05:34 PM   #168
Razor2010
Private First Class
34
Rep
147
Posts

Drives: 2020 G20 330i M-Sport - M-LSD
Join Date: Mar 2010
Location: Caribbean

iTrader: (0)

Quote:
Originally Posted by sspdw View Post
You should be able to find information in your manual.
Try Google translate on Oil-club.de and you will find some helpful information.
Will check it out, thanks.

I donít have my manual or car yet, itís on a boat in transit arriving mid-March.
Appreciate 0
      02-21-2020, 06:30 PM   #169
VipinLJ
Petrolhead
VipinLJ's Avatar
United_States
291
Rep
971
Posts

Drives: Ď20 330i,Ď16 X3,Ď18 SQ5,Ď17 A7
Join Date: Nov 2019
Location: Illinois

iTrader: (1)

Quote:
Originally Posted by Razor2010 View Post
Will check it out, thanks.

I donít have my manual or car yet, itís on a boat in transit arriving mid-March.
You didnít tell us how you specced your car
__________________
Current:
2020 BMW 330i xDrive
2018 Audi SQ5 Prestige
2017 Audi A7 Prestige
2016 BMW X3 xDrive28i
Appreciate 0
      02-21-2020, 07:11 PM   #170
Razor2010
Private First Class
34
Rep
147
Posts

Drives: 2020 G20 330i M-Sport - M-LSD
Join Date: Mar 2010
Location: Caribbean

iTrader: (0)

Quote:
Originally Posted by VipinLJ View Post
You didnít tell us how you specced your car
See below

Getting exciting, a few weeks until delivery!

One of my main goals is the lighter the better which is why I went with the 330i over the 330e even though the 330e is 20%+ cheaper in our region because of significantly lower import duties on electric and PHEVs. Itís also one of the reasons I didnít order a moonroof - extra weight in the worse place possible and also itís literally a hole in your roof that lets water in by design LOL. My main Ďsplurgeí option was the M-LSD.

I finally saw the rims I ordered in the flesh for the first time while visiting a dealership in the USA last week and they are my favourite! I was worried that I may have made the wrong choice but in person they look awesome on the mineral grey 330i! See bottom two pics. This is USA spec car so has the yellow side indicator in the front (doesnít come in our region), and this car didnít have the M-Sport Brakes. Rims look sweet though!
Attached Images
     

Last edited by Razor2010; 02-21-2020 at 07:21 PM..
Appreciate 1
VipinLJ291.00

      02-21-2020, 07:26 PM   #171
VipinLJ
Petrolhead
VipinLJ's Avatar
United_States
291
Rep
971
Posts

Drives: Ď20 330i,Ď16 X3,Ď18 SQ5,Ď17 A7
Join Date: Nov 2019
Location: Illinois

iTrader: (1)

That looks like a good enough spec. It says cruise control with auto braking. Is that adaptive cruise control? I have the regular cruise control. I don’t think my car will auto brake unless it’d talking about the pre collision thingy.
__________________
Current:
2020 BMW 330i xDrive
2018 Audi SQ5 Prestige
2017 Audi A7 Prestige
2016 BMW X3 xDrive28i
Appreciate 0
      02-21-2020, 07:35 PM   #172
Razor2010
Private First Class
34
Rep
147
Posts

Drives: 2020 G20 330i M-Sport - M-LSD
Join Date: Mar 2010
Location: Caribbean

iTrader: (0)

Quote:
Originally Posted by VipinLJ View Post
That looks like a good enough spec. It says cruise control with auto braking. Is that adaptive cruise control? I have the regular cruise control. I donít think my car will auto brake unless itíd talking about the pre collision thingy.
Yea, no clue what that really does, I didnít want that option but had to get it to get another option I wanted, I can look up which one it was, may have been the Sports Transmission?

Another interesting thing about my spec, I really disliked the new digital instrument cluster so luckily you could select the old school if you wanted, fwwwweeeewww!
Attached Images
 
Appreciate 0
      02-21-2020, 08:07 PM   #173
VipinLJ
Petrolhead
VipinLJ's Avatar
United_States
291
Rep
971
Posts

Drives: Ď20 330i,Ď16 X3,Ď18 SQ5,Ď17 A7
Join Date: Nov 2019
Location: Illinois

iTrader: (1)

Quote:
Originally Posted by Razor2010 View Post
Yea, no clue what that really does, I didnít want that option but had to get it to get another option I wanted, I can look up which one it was, may have been the Sports Transmission?

Another interesting thing about my spec, I really disliked the new digital instrument cluster so luckily you could select the old school if you wanted, fwwwweeeewww!
I like the ďanalogĒ gauges too. The live cockpit isnít bad but coming from Audiís VC, it definitely is lacking. Especially compared to the 2020 A4 which has a much better VC with better resolution (even the MMI display has a much better resolution than my A4/330i). But like you, to get the options I wanted, I had to get the live cockpit.
__________________
Current:
2020 BMW 330i xDrive
2018 Audi SQ5 Prestige
2017 Audi A7 Prestige
2016 BMW X3 xDrive28i
Appreciate 0
      02-21-2020, 08:14 PM   #174
Razor2010
Private First Class
34
Rep
147
Posts

Drives: 2020 G20 330i M-Sport - M-LSD
Join Date: Mar 2010
Location: Caribbean

iTrader: (0)

Quote:
Originally Posted by VipinLJ View Post
I like the ďanalogĒ gauges too. The live cockpit isnít bad but coming from Audiís VC, it definitely is lacking. Especially compared to the 2020 A4 which has a much better VC with better resolution (even the MMI display has a much better resolution than my A4/330i). But like you, to get the options I wanted, I had to get the live cockpit.
I hear ya, the digital has grown on me in the last few months watching videos etc., but been driving cars with analog for almost 30 years so kind of hard to get away from that, I am old school which is why I will take less power for lighter weight. Kind of wish this car came in manual but I have driven the 8 speed in a X1 and it is pretty impressive for a slush box.
Appreciate 0
      02-21-2020, 10:18 PM   #175
VipinLJ
Petrolhead
VipinLJ's Avatar
United_States
291
Rep
971
Posts

Drives: Ď20 330i,Ď16 X3,Ď18 SQ5,Ď17 A7
Join Date: Nov 2019
Location: Illinois

iTrader: (1)

Quote:
Originally Posted by Razor2010 View Post
I hear ya, the digital has grown on me in the last few months watching videos etc., but been driving cars with analog for almost 30 years so kind of hard to get away from that, I am old school which is why I will take less power for lighter weight. Kind of wish this car came in manual but I have driven the 8 speed in a X1 and it is pretty impressive for a slush box.
Don’t worry about the tranny in the 330i. BMW has mastered tuning the ZF. It’s exceptionally good. Tell an uninformed soul that ithe 330i has a DCT and ask them to drive a DSG equipped car to show them how it’s the same and they’ll believe it.
__________________
Current:
2020 BMW 330i xDrive
2018 Audi SQ5 Prestige
2017 Audi A7 Prestige
2016 BMW X3 xDrive28i
Appreciate 0
      02-21-2020, 10:29 PM   #176
Razor2010
Private First Class
34
Rep
147
Posts

Drives: 2020 G20 330i M-Sport - M-LSD
Join Date: Mar 2010
Location: Caribbean

iTrader: (0)

Quote:
Originally Posted by VipinLJ View Post
Donít worry about the tranny in the 330i. BMW has mastered tuning the ZF. Itís exceptionally good. Tell an uninformed soul that ithe 330i has a DCT and ask them to drive a DSG equipped car to show them how itís the same and theyíll believe it.
Great! This makes me hopeful.

I drove an Audi with DCT about 8 years ago and it shifted instantly, if the 330i is anywhere near as fast I will be happy.

Do you use the paddles or gear knob when in manual shifting mode?
Appreciate 0
Post Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 05:37 PM.




g20
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST