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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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      09-03-2020, 09:10 AM   #1
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Who has the quickest G20 330i on Bimmerpost?

Im just super curious on this. I have no mods on my 330. I feel its fairly fast for a 4 cylinder for sure but idk if it cuts it. I feel they may have underpowered it alot to make room for m340 m3 buyers for sure. Its not slouch but I notice how much more power it could have from my previous bmws.

I feel like I do good playing in traffic with other cars but it could be much more playful. So Curious to know if anybody has any mods or most power one has gotten out of the 330. Sometimes i feel I should've gotten the m340 Just now days you don't need that much power to have fun but I feel I bottom out fairly quick when playing with other cars lol.


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      09-03-2020, 10:38 AM   #2
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Realistically you can get similar hp as an M340i with a full tuning kit (engine map, intercooler, intake, downpipe, new turbo). But it's probably cheaper to just sell the 330i and get an M340i instead.

In the mean time get a good remap, that will give it a healthy hp boost for 1k only.
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      09-03-2020, 11:48 AM   #3
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Quote:
Originally Posted by Flamingi View Post
Realistically you can get similar hp as an M340i with a full tuning kit (engine map, intercooler, intake, downpipe, new turbo). But it's probably cheaper to just sell the 330i and get an M340i instead.

In the mean time get a good remap, that will give it a healthy hp boost for 1k only.
I doubt you’d be able to get close to 400whp even with an upgraded turbo slapped on. I don’t think BMWs are the best when it comes to tuning potential. But that’s just me. I hope I’m wrong. I’ve seen F30s FBO with upgraded turbos and they put out only around 350bhp at the most. Agreed it’s the N20 engine and not the B46/48. But still.
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      09-03-2020, 12:19 PM   #4
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Quote:
Originally Posted by VipinLJ View Post
I doubt you’d be able to get close to 400whp even with an upgraded turbo slapped on. I don’t think BMWs are the best when it comes to tuning potential. But that’s just me. I hope I’m wrong. I’ve seen F30s FBO with upgraded turbos and they put out only around 350bhp at the most. Agreed it’s the N20 engine and not the B46/48. But still.
I think I worded it poorly. A 330i with a full tuning kit can come close to the stock hp of a M340i, i.e. 380 crank hp. That seems realistic, without an upgrade turbo probably 50hp less.

From what I heared the B48/58 are really easy to tune. There are a few of 1000hp Supra Mk5 on the road. Even just a remap on the 30i should give you over 300hp easy.
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      09-03-2020, 01:32 PM   #5
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The 330i is quick enough :-)
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      09-03-2020, 01:52 PM   #6
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The 330i is quick enough :-)
not bad ))
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      09-03-2020, 02:34 PM   #7
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Quote:
Originally Posted by Flamingi View Post
I think I worded it poorly. A 330i with a full tuning kit can come close to the stock hp of a M340i, i.e. 380 crank hp.
Dynos have already shown that crank hp for the M340i is over 400hp not the advertised 382.
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      09-03-2020, 02:35 PM   #8
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There are number of European tuners getting 350hp from 330i.
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      09-03-2020, 03:11 PM   #9
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Quote:
Originally Posted by vincechase View Post
I feel its fairly fast for a 4 cylinder for sure but idk if it cuts it. I feel they may have underpowered it alot to make room for m340 m3 buyers for sure.
Being careful not to cannibalize offerings in your own line up is a pretty tough balancing act. Enacting a price point that doesn't jive with competitor products or performance or options, and you could have a real failure on your hands at no real fault of the product itself; just a victim of economics.

Anyway, I have to comment here: I've had an M340i for about 7 months now, and drove a loaner 330i for a few days recently. Gotta say, I was really impressed. That ~300 lb of torque really comes online very early, and I couldn't believe how responsive the throttle was, never left wanting for power even at freeway speeds. In all honesty, it felt (and I may catch some flak for this) as smooth and immediate as my 2016 535i M Sport.
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      09-09-2020, 10:01 PM   #10
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Originally Posted by StevenDS85 View Post
The 330i is quick enough :-)
It's alright I feel they should have gave us 300hp 4.7 secs
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      09-09-2020, 10:07 PM   #11
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Quote:
Originally Posted by Rocket455 View Post
Quote:
Originally Posted by vincechase View Post
I feel its fairly fast for a 4 cylinder for sure but idk if it cuts it. I feel they may have underpowered it alot to make room for m340 m3 buyers for sure.
Being careful not to cannibalize offerings in your own line up is a pretty tough balancing act. Enacting a price point that doesn't jive with competitor products or performance or options, and you could have a real failure on your hands at no real fault of the product itself; just a victim of economics.

Anyway, I have to comment here: I've had an M340i for about 7 months now, and drove a loaner 330i for a few days recently. Gotta say, I was really impressed. That ~300 lb of torque really comes online very early, and I couldn't believe how responsive the throttle was, never left wanting for power even at freeway speeds. In all honesty, it felt (and I may catch some flak for this) as smooth and immediate as my 2016 535i M Sport.
I hear ya but I feel my 17' 335 was way faster and powerful I mean it was a in line 6 but I feel usually when new models. One out of the 328,330 they are almost or close to as fast as previous 335 etc. for example

I just feel like the new 340 blows the 330 out the box by a long shot. Makes me feel like I'm standing still lol.

But al land all the g20 330 is a great car and most the time I feel it has way more then I'll ever need. Until I come face to face with a 340 or 335 or something was some decent power and I'm left in the dust and don't even feel like I put up a fight which is what gets to me.
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      09-13-2020, 02:14 PM   #12
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Quote:
Originally Posted by vincechase View Post
It's alright I feel they should have gave us 300hp 4.7 secs
330i, 430i of the prior F series generation with a B48 is capable of sub 4.5 with launch xdrive and are around 330-340bhp with stage 2, fbo.



The newer G series both for the 4/3 I would bet can handle 350bhp with the slightly bigger turbo and higher factory tune with FBO stage 2 e30.
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      09-13-2020, 10:41 PM   #13
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I'm surprised no one with a G20 330i has a dragy yet. I'd love to see some numbers! Can't wait till I get mine on tuesday.
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      09-14-2020, 08:40 AM   #14
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Stock 330i RWD:


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      09-14-2020, 12:04 PM   #15
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Stock 330i RWD:


Can you also get some quarter mile times?
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      09-15-2020, 04:53 AM   #16
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I will measure by the end of the week Yesterday I make one more better time:

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      09-15-2020, 05:33 PM   #17
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Got my dragy today. Did only one run because of lack of time. Only mod is a JB4 on map 3 and E30 (or less, since I haven't actually measured the ethanol content of E85 at the pump here) fuel.
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      09-15-2020, 06:15 PM   #18
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Originally Posted by VipinLJ View Post
Got my dragy today. Did only one run because of lack of time. Only mod is a JB4 on map 3 and E30 (or less, since I haven't actually measured the ethanol content of E85 at the pump here) fuel.
Downpipe + exhaust + charge pipe + intake and I bet you have a 12.5s car.

Awesome results!!!

is this 8AT or 6MT and tires? I xHP stage 3'd my 8AT a few days ago and it feels like a poor man's DCT.

Last edited by Avaley; 09-15-2020 at 06:22 PM..
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      09-15-2020, 06:28 PM   #19
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Originally Posted by Avaley View Post
Downpipe + exhaust + charge pipe + intake and I bet you have a 12.5s car.

Awesome results!!!

is this 8AT or 6MT and tires? I xHP stage 3'd my 8AT a few days ago and it feels like a poor man's DCT.
I was surprised at the results too. But when I launched it today, it felt like it has always felt when using LC (just to make sure it wasn't a fluke) I'll do a few more runs in a few days.

And yes. I'll be doing more to this car hopefully even though it's a lease. I might even buy it out at the end of the lease if I'm happy with how the car turns out.

Car is an xDrive with 8AT. Running OEM all season RFTs (Pirelli P7 Cinturato) 225/45R18 with treads at 5/32.

I also spoke to xHP last week and they said they're working on a transmission tune for the G20 330i. Can't wait for them to launch it!
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      09-15-2020, 07:42 PM   #20
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Quote:
Originally Posted by VipinLJ View Post
Quote:
Originally Posted by Avaley View Post
Downpipe + exhaust + charge pipe + intake and I bet you have a 12.5s car.

Awesome results!!!

is this 8AT or 6MT and tires? I xHP stage 3'd my 8AT a few days ago and it feels like a poor man's DCT.
I was surprised at the results too. But when I launched it today, it felt like it has always felt when using LC (just to make sure it wasn't a fluke) I'll do a few more runs in a few days.

And yes. I'll be doing more to this car hopefully even though it's a lease. I might even buy it out at the end of the lease if I'm happy with how the car turns out.

Car is an xDrive with 8AT. Running OEM all season RFTs (Pirelli P7 Cinturato) 225/45R18 with treads at 5/32.

I also spoke to xHP last week and they said they're working on a transmission tune for the G20 330i. Can't wait for them to launch it!
Yes I spoke to them as well and a tune should be out around the new year for our tranny!
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      09-15-2020, 08:26 PM   #21
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Yes I spoke to them as well and a tune should be out around the new year for our tranny!
Dammit. New year??? I hope its sooner. Much sooner.
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      09-15-2020, 08:53 PM   #22
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Quote:
Originally Posted by VipinLJ View Post
I was surprised at the results too. But when I launched it today, it felt like it has always felt when using LC (just to make sure it wasn't a fluke) I'll do a few more runs in a few days.

And yes. I'll be doing more to this car hopefully even though it's a lease. I might even buy it out at the end of the lease if I'm happy with how the car turns out.

Car is an xDrive with 8AT. Running OEM all season RFTs (Pirelli P7 Cinturato) 225/45R18 with treads at 5/32.

I also spoke to xHP last week and they said they're working on a transmission tune for the G20 330i. Can't wait for them to launch it!
I have the exact same tires and know that these wheels will be a major bottleneck after bolt ons get added.

After i trans flashed, traction is starting to be noticeably worse. It wasn't an issue with just the stage 1 ECU flash...I'm not even going to think about adding boost to launch control (which is an awesome option ) until I get some performance non RFTs.

Pretty silly that the newer ones have had so much restrictions in OEM software but I guess that comes with digitization....
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