323i vs 325i Horsepower

SharpPointyStick · 07-27-2010, 03:54 PM

From what I can see the 323i and the 325i both have the same engine. The N52B25, 2.5 L displacement.

The 323i version has ~180HP, the 325i has ~215hp.

So what is different that the 325i has about +35hp?

Or asked another way; how do I get 325i horsepower from my 323i?

E90Alex · 07-27-2010, 04:25 PM

isnt the 325i e90 engine a 3.0L? Atleast it is in the US

kred · 07-27-2010, 04:25 PM

Quote:

Originally Posted by E90Alex

isnt the 325i e90 engine a 3.0L? Atleast it is in the US

yes it is

BOSSBMW · 07-27-2010, 04:36 PM

Quote:

Originally Posted by SharpPointyStick

From what I can see the 323i and the 325i both have the same engine. The N52B25, 2.5 L displacement.

The 323i version has ~180HP, the 325i has ~215hp.

So what is different that the 325i has about +35hp?

Or asked another way; how do I get 325i horsepower from my 323i?

hopefully someone more knowledgable can chime in here, but if I'm not mistaken you'll want to look into the Gintani tune and 330i manifold swap.

SharpPointyStick · 07-27-2010, 05:26 PM

Quote:

Originally Posted by E90Alex

isnt the 325i e90 engine a 3.0L? Atleast it is in the US

My bad...the European 325i has 2.5L @ 215HP, the US spec is 3.0L @ 215HP (2006).

Assuming Wikipedia can be trusted.

OlivaresAnthony · 07-28-2010, 12:49 AM

Quote:

Originally Posted by SharpPointyStick

My bad...the European 325i has 2.5L @ 215HP, the US spec is 3.0L @ 215HP (2006).

Assuming Wikipedia can be trusted.

that is correct

S_1_N_3_R · 07-28-2010, 11:46 AM

Quote:

Originally Posted by SharpPointyStick

My bad...the European 325i has 2.5L @ 215HP, the US spec is 3.0L @ 215HP (2006).

Assuming Wikipedia can be trusted.

Damn the Euros have a 215 2.5? I wonder how I can get that extra 15 horsepower...

BudVlad · 07-28-2010, 12:03 PM

Quote:

Originally Posted by SharpPointyStick

My bad...the European 325i has 2.5L @ 215HP, the US spec is 3.0L @ 215HP (2006).

Assuming Wikipedia can be trusted.

Since 2007 European 325i has 3 liter engine (N53B30-U0 218 hp)

DimSum · 07-29-2010, 03:39 PM

I have the 2007 323i, it has the stage III manifold and 200HP stock.
after a flash you can get around 220 to 240hp from it. Headers give around 10whp.

DimSum · 07-29-2010, 03:39 PM

http://www.e90post.com/forums/showthread.php?t=382656

EuroTrip · 07-29-2010, 03:49 PM

do not mod a non 335i E9x. Its a waste of money.

halkordy89 · 07-29-2010, 04:58 PM

Quote:

Originally Posted by EuroTrip

do not mod a non 335i E9x. Its a waste of money.

come on playa why do you gotta hate?? let them mod if they want

LemonIce · 07-29-2010, 09:35 PM

Quote:

Originally Posted by E90Alex

isnt the 325i e90 engine a 3.0L? Atleast it is in the US

Quote:

Originally Posted by kred

yes it is

+1

SharpPointyStick · 07-29-2010, 10:34 PM

Quote:

Originally Posted by DimSum

I have the 2007 323i, it has the stage III manifold and 200HP stock.
after a flash you can get around 220 to 240hp from it. Headers give around 10whp.

What flash did you get/have?

DimSum · 07-30-2010, 02:40 AM

Quote:

Originally Posted by SharpPointyStick

What flash did you get/have?

Well on the 2006 model 323i it's missing the internals for running a euro 325i flash. You need the Stage 3 Intake. In europe the 325i 2.5L is running a free flow primary cat.

ellipsis212 · 07-30-2010, 02:56 PM

just sell and get a 325i
sell that and get a 330i
then sell that and get a 335i

SharpPointyStick · 07-30-2010, 03:04 PM

Quote:

Originally Posted by ellipsis212

just sell and get a 325i
sell that and get a 330i
then sell that and get a 335i

Yah I am thinking for the $$$ it would cost to increase my horsepower, I should have just bought a 325...

Maybe I will just live with the mods I have now...AFE filter and removed the carbon filter

LemonIce · 07-30-2010, 03:30 PM

Quote:

Originally Posted by ellipsis212

just sell and get a 325i
sell that and get a 330i
then sell that and get a 335i

lol -_-

jfisher160 · 07-30-2010, 04:02 PM

Quote:

Originally Posted by SharpPointyStick

Yah I am thinking for the $$$ it would cost to increase my horsepower, I should have just bought a 325...

Maybe I will just live with the mods I have now...AFE filter and removed the carbon filter

I did the Carbon filter removal and it made it alittle louder then normal. I like the sound. It gives it more throaty sound.

bugsandry · 07-30-2010, 04:25 PM

Quote:

Originally Posted by jfisher160

I did the Carbon filter removal and it made it alittle louder then normal. I like the sound. It gives it more throaty sound.

+1 on that

SharpPointyStick · 07-30-2010, 05:05 PM

Quote:

Originally Posted by jfisher160

I did the Carbon filter removal and it made it alittle louder then normal. I like the sound. It gives it more throaty sound.

I actually noticed more of a sound change with the AFE filter over the stock...noticed the throttle response change when I removed the carbon filter.

I am on the fence for replacing the whole airbox with the Euro Airbox. Thinks that are stopping me is;
- Increased noise? Still want my car to be fairly quite
- Any real increased in performance, over AFE + Carbon Filter delete?
- Even fit on my car?

I think I am going to wait for some other people to give it a go, before sinking ~$400.

07-27-2010, 03:54 PM	#1
SharpPointyStick Second Lieutenant 34 Rep 273 Posts Drives: 2006 Alpine White 323i (E90) Join Date: Jun 2009 Location: Vancouver BC iTrader: (2)	323i vs 325i Horsepower From what I can see the 323i and the 325i both have the same engine. The N52B25, 2.5 L displacement. The 323i version has ~180HP, the 325i has ~215hp. So what is different that the 325i has about +35hp? Or asked another way; how do I get 325i horsepower from my 323i?
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07-27-2010, 04:25 PM	#2
E90Alex Colonel 166 Rep 2,629 Posts Drives: F83 M4 Competition Join Date: Dec 2008 Location: Playa Vista, CA iTrader: (14)	isnt the 325i e90 engine a 3.0L? Atleast it is in the US
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07-29-2010, 03:39 PM	#9
DimSum Banned 202 Rep 2,740 Posts Drives: SLOW Join Date: May 2008 Location: LITTLEBIMMER.COM iTrader: (10)	I have the 2007 323i, it has the stage III manifold and 200HP stock. after a flash you can get around 220 to 240hp from it. Headers give around 10whp.
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07-29-2010, 03:39 PM	#10
DimSum Banned 202 Rep 2,740 Posts Drives: SLOW Join Date: May 2008 Location: LITTLEBIMMER.COM iTrader: (10)	http://www.e90post.com/forums/showthread.php?t=382656
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07-29-2010, 03:49 PM	#11
EuroTrip BMW FAN 43 Rep 723 Posts Drives: 2002 E46 M3 AW 6MT Join Date: Jan 2008 Location: Laguna Beach, CA iTrader: (5)	do not mod a non 335i E9x. Its a waste of money.
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07-30-2010, 02:56 PM	#16
ellipsis212 Colonel 1618 Rep 2,161 Posts Drives: 2017 M3 Join Date: Jun 2009 Location: RVA iTrader: (5) Garage List 2018 BMW M3 [0.00]	just sell and get a 325i sell that and get a 330i then sell that and get a 335i
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