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Technical Topics B48 4-Cylinder Turbo Engine / Drivetrain / Exhaust Modifications Any turbo upgrade for 320i/330i G20?

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      08-05-2020, 10:09 AM   #1
CarlosM4
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Any turbo upgrade for 320i/330i G20?

Good morning,
Is there any turbo upgrade options for B48 320i/330i ?
I would like to get over 330whp with stock internals.

Regards
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      08-07-2020, 02:55 AM   #2
Boundless46
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Quote:
Originally Posted by CarlosM4 View Post
Good morning,
Is there any turbo upgrade options for B48 320i/330i ?
I would like to get over 330whp with stock internals.

Regards
You don't need a turbo upgrade to get to that ballpark. Should be able to with Stage 2 BM3 Tune and a Catless Downpipe.
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      08-07-2020, 03:18 PM   #3
Don76
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I've got stage 2 BM3 and catless DP on my B48 320i
It's pulling around 320bhp

I'm not sure what would be involved in upgrading the turbo. Intercooler, charge pipe, air intake, exhaust would be likely contenders for upgrading
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      08-09-2020, 11:15 AM   #4
CarlosM4
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It is not possible to get over 250whp with the stock turbos in the B48 320i.
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      08-09-2020, 02:29 PM   #5
Don76
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Quote:
Originally Posted by CarlosM4 View Post
It is not possible to get over 250whp with the stock turbos in the B48 320i.
Yes it is.

I'm running 320bhp with a stage 2 map, decat downpipe and cold air intake.
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      08-09-2020, 05:16 PM   #6
Ghozthunter
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Quote:
Originally Posted by Don76 View Post
Yes it is.

I'm running 320bhp with a stage 2 map, decat downpipe and cold air intake.
You have any sound clips of how it sounds with decat on stock exhaust?
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      08-09-2020, 05:20 PM   #7
Don76
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Quote:
Originally Posted by Ghozthunter View Post
Quote:
Originally Posted by Don76 View Post
Yes it is.

I'm running 320bhp with a stage 2 map, decat downpipe and cold air intake.
You have any sound clips of how it sounds with decat on stock exhaust?
I'll get one this week for you.
It's not quite the standard exhaust though - my car had the dreaded OPF/GPF so I removed this and the resonator. It's effectively straight pipe from the decat to the back box.
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      08-09-2020, 10:26 PM   #8
Ghozthunter
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Gotcha. Would still like to hear how it sounds though. Greatly appreciated.
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      08-10-2020, 12:09 AM   #9
YONIg20
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Quote:
Originally Posted by CarlosM4 View Post
It is not possible to get over 250whp with the stock turbos in the B48 320i.
I'm getting 350hp with air intake and bm3 tune!!!
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      08-12-2020, 06:55 AM   #10
todd92
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Quote:
Originally Posted by YONIg20 View Post
I'm getting 350hp with air intake and bm3 tune!!!
Not from a 320i, from a 330i.
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      08-12-2020, 12:06 PM   #11
OM3RTA
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Anyone know exact differences in the M135i's engine as if possible I'd do the same upgrades for the same output if it won't break the bank doing so.
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      08-22-2020, 01:01 AM   #12
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new to bmw’s and just bought a 2020 330i. I want my exhaust to sound very aggressive but haven’t been able to find any exhaust systems that fit on the xdrive trim. can anyone lead me in the right direction? or would i be able to achieve something near a cat back exhaust system by swapping individual exhaust components?
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      08-22-2020, 04:02 PM   #13
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Quote:
Originally Posted by Boundless46 View Post
Quote:
Originally Posted by CarlosM4 View Post
Good morning,
Is there any turbo upgrade options for B48 320i/330i ?
I would like to get over 330whp with stock internals.

Regards
You don't need a turbo upgrade to get to that ballpark. Should be able to with Stage 2 BM3 Tune and a Catless Downpipe.
does anyone know if they make any rear diffusers or any front lips for a g20 2020 with no m package ?? new to the beamer family and trying to understand and learn everything properly. i have g20 2020 with everything but the m package and i was wondering what coding , tuning , and exterior and interior upgrades i may make without messing up my lease ?
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      06-23-2023, 07:57 PM   #14
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Quote:
Originally Posted by YONIg20 View Post
I'm getting 350hp with air intake and bm3 tune!!!
Did you have to do a DME unlock? I also have a 2020 330i and am wondering if I can just install the bm3 tuner immediately. Also, when you bring in the car for service do you just remove the tuner? Sorry I’m new to this but looking to get into it.
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      06-24-2023, 01:55 PM   #15
Glashutte
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https://iposmotorsport.com/

IM450 and IM500 can get you well past that. 450whp for the im450 and 500whp for the im500

https://much**********/product/b48-2...ota-supra-mk5/

This one is good for up to 400 whp (not sure why muchboost is censored)

Obv you also need to unlock the dme and get a custom tune to get gains from this
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      09-16-2023, 10:39 PM   #16
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does it make sense to upgrade turbo without downpipe changes?
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      09-17-2023, 06:23 PM   #17
Glashutte
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^ Not a good idea. Big turbo without aftermarket high flow dp = high back pressure. Really bad for your internals and turbo
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