N52 engine differences?

N0OS3 · 12-27-2011, 06:27 PM

So i was reading up on the different versions of the N52B30 and between the 325i, 330i, and E70/E83 X5 3.0si, there's variations in horsepower using different components.

325i is producing 215bhp
+330i uses DISA 3-stage intake to produce +40bhp to put at 255bhp
X5 uses... what? to get that extra 5 hp?
Euro model 330i and 530i are getting 268bhp...

According to Wikipedia anyway, they use different backpressure mufflers to achieve difference... do you think that's the case with the X5? Different exhaust?

And what about Euro? no way that air box is helping get +13 hp to that engine... unless it's the better gas.

e90pilot · 12-27-2011, 06:33 PM

We measure HP differently.

Mark06 · 12-27-2011, 06:40 PM

I would guess european cars have more hp because the EU has different emissions requirements. It's been shown via dyno on the US 325i/330i that a CAT delete adds ~15hp which would reduce back pressure and match up with euro numbers.

e90pilot · 12-27-2011, 06:54 PM

Quote:

Originally Posted by Mark06

I would guess european cars have more hp because the EU has different emissions requirements. It's been shown via dyno on the US 325i/330i that a CAT delete adds ~15hp which would reduce back pressure and match up with euro numbers.

They still have cats in Europe.

N0OS3 · 12-27-2011, 07:01 PM

Quote:

Originally Posted by Mark06

I would guess european cars have more hp because the EU has different emissions requirements. It's been shown via dyno on the US 325i/330i that a CAT delete adds ~15hp which would reduce back pressure and match up with euro numbers.

interesting... but american models have 4 cats... which set do they remove?

AlanAZ · 12-27-2011, 09:55 PM

I was in Spain a month ago. Their low test gas was 95 octane, high was 98.

I wish we had 98 here..

VTECaddict · 12-27-2011, 09:59 PM

Euro 330i has an N53, not N52. It has direct injection and no Valvetronic.

e90pilot · 12-28-2011, 01:23 AM

Quote:

Originally Posted by AlanAZ

I was in Spain a month ago. Their low test gas was 95 octane, high was 98.

I wish we had 98 here..

Their octane rating is calculated differently too.

Johnny D · 12-28-2011, 01:30 AM

Quote:

Originally Posted by AlanAZ

I was in Spain a month ago. Their low test gas was 95 octane, high was 98.

I wish we had 98 here..

We do where I live. Its called 93 AKI gas.

yesido · 12-28-2011, 02:07 AM

Quote:

Originally Posted by Mark06

I would guess european cars have more hp because the EU has different emissions requirements. It's been shown via dyno on the US 325i/330i that a CAT delete adds ~15hp which would reduce back pressure and match up with euro numbers.

good comment!!!!

XieJin · 12-28-2011, 02:58 AM

I'm pretty sure my 325i '06 has the N52N which afaik is rated to 217/218hbp? i got the 2.5L version afaik, not sure how to check it though (produced 2006/12)

EDIT: Also i usually just run on 95 octane, haven't noticed any difference with the (102+ octane) shell vpower. Even though the fuel is rated differently i honestly can't say i feel a difference

BudVlad · 12-28-2011, 04:36 AM

European 325i has 3 liter engine since March 2007 for E93, September 2007 for E92. 325i has N53B30-U0 which is detuned N53B30-O0 used in 330i. N53B30-U0 has 218 bhp (160 kW) @ 6100 RPM, N53B30-O0 has 272 bhp (200 kW) @ 6700 RPM. Both engines have 4 cats but produce more emissions than US models.

monkey_wrench · 12-28-2011, 11:12 AM

Quote:

Originally Posted by AlanAZ

I was in Spain a month ago. Their low test gas was 95 octane, high was 98.

I wish we had 98 here..

Also measured different.

newbie · 12-29-2011, 11:01 AM

The North American BMW 3 series cars also have an extra charcoal filter placed in the air intake (for U.S. emissions). The european 3 series do not have this filter. You have to cut it out to remove it from our cars. Its only purpose is to prevent fuel vapors to escape. Perhaps its good for maybe 1 to 2 hp? Not sure??

jc5988 · 12-29-2011, 02:53 PM

Euro E87 130i N52 has 258hp, im sure its same as 330i N52. i guess extra set of cat and more restricted intake contributed to the 3 hp decrease.

bimmer0717zz · 12-20-2023, 08:14 PM

Im so confused my engine is n52b30bf Im not sure what means by bf

ptpending · 12-21-2023, 08:04 AM

Quote:

Originally Posted by VTECaddict

Euro 330i has an N53, not N52. It has direct injection and no Valvetronic.

thats only partially true
euro cars from 2007/03 are made for western europe countries with low-sulphyr petrol with N53,
but also cars made for eastern europe, asia, south africa, south america, china, japan and so on had N52 instead

12-27-2011, 06:27 PM	#1
N0OS3 Colonel 141 Rep 2,217 Posts Drives: E90 Join Date: Feb 2010 Location: Oak Harbor, WA iTrader: (5)	N52 engine differences? So i was reading up on the different versions of the N52B30 and between the 325i, 330i, and E70/E83 X5 3.0si, there's variations in horsepower using different components. 325i is producing 215bhp +330i uses DISA 3-stage intake to produce +40bhp to put at 255bhp X5 uses... what? to get that extra 5 hp? Euro model 330i and 530i are getting 268bhp... According to Wikipedia anyway, they use different backpressure mufflers to achieve difference... do you think that's the case with the X5? Different exhaust? And what about Euro? no way that air box is helping get +13 hp to that engine... unless it's the better gas.
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12-27-2011, 06:33 PM	#2
e90pilot Freight Dawg 104 Rep 2,103 Posts Drives: E90 325i Join Date: Jul 2005 Location: Oakland, CA iTrader: (3)	We measure HP differently. __________________ --Marcelo '06 Arctic Metallic 325i \| Sport Package \| 6MT \| Dinan Stage III suspension \| Dinan exhaust \| 330i manifold swap! Click here! \| Active Autowerke tune \| 135i Brake Calipers \| Deiselboost caliper brackets \| E46 M3 front rotors
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12-27-2011, 06:40 PM	#3
Mark06 Private First Class 3 Rep 100 Posts Drives: 330i Join Date: Mar 2011 Location: Texas iTrader: (0)	I would guess european cars have more hp because the EU has different emissions requirements. It's been shown via dyno on the US 325i/330i that a CAT delete adds ~15hp which would reduce back pressure and match up with euro numbers. __________________ "Speed has never killed anyone, suddenly becoming stationary... that's what gets you." -Clarkson
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12-27-2011, 09:55 PM	#6
AlanAZ Captain 40 Rep 818 Posts Drives: E90 325i sport manual Join Date: Aug 2009 Location: Scottsdale, AZ iTrader: (4)	I was in Spain a month ago. Their low test gas was 95 octane, high was 98. I wish we had 98 here..
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12-27-2011, 09:59 PM	#7
VTECaddict Where'd my VTEC go? 481 Rep 6,067 Posts Drives: 06 330i 6MT Join Date: Mar 2009 Location: Seattle, WA iTrader: (4)	Euro 330i has an N53, not N52. It has direct injection and no Valvetronic. __________________ AW/Terra \| ZSP \| ZPP \| ZCW \| iDrive \| CA Mods: BC BR coilovers \| Blacklines \| M-tech rear \| dual exhaust \| M3 steering wheel \| BMW SSK \| ZHP shift knob \| High-kick CF spoiler \| NBT Retrofit M3 front control arms \| M3 rear guide rods \| Manzo rear toe and camber links \| Monroe rear shock mounts \| Varrstoen ES1 19x9.5+20 Front, 19x11+25 rear
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12-28-2011, 02:58 AM	#11
XieJin Private First Class 10 Rep 197 Posts Drives: '15 M235i xDrive Join Date: Jan 2011 Location: Sweden iTrader: (0)	I'm pretty sure my 325i '06 has the N52N which afaik is rated to 217/218hbp? i got the 2.5L version afaik, not sure how to check it though (produced 2006/12) EDIT: Also i usually just run on 95 octane, haven't noticed any difference with the (102+ octane) shell vpower. Even though the fuel is rated differently i honestly can't say i feel a difference
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12-28-2011, 04:36 AM	#12
BudVlad Old Geezer 360 Rep 1,193 Posts Drives: 08 E92 N53B30 Join Date: Jul 2007 Location: Budweis iTrader: (0) Garage List 2008 E92 N53B30 [10.00]	European 325i has 3 liter engine since March 2007 for E93, September 2007 for E92. 325i has N53B30-U0 which is detuned N53B30-O0 used in 330i. N53B30-U0 has 218 bhp (160 kW) @ 6100 RPM, N53B30-O0 has 272 bhp (200 kW) @ 6700 RPM. Both engines have 4 cats but produce more emissions than US models. __________________
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12-29-2011, 11:01 AM	#14
newbie Registered 0 Rep 3 Posts Drives: 07 BMW 328i Join Date: Jan 2009 Location: Indianapolis iTrader: (0)	The North American BMW 3 series cars also have an extra charcoal filter placed in the air intake (for U.S. emissions). The european 3 series do not have this filter. You have to cut it out to remove it from our cars. Its only purpose is to prevent fuel vapors to escape. Perhaps its good for maybe 1 to 2 hp? Not sure??
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12-29-2011, 02:53 PM	#15
jc5988 Captain 91 Rep 611 Posts Drives: 2010 328i 6MT Join Date: Aug 2011 Location: Los Angeles iTrader: (0)	Euro E87 130i N52 has 258hp, im sure its same as 330i N52. i guess extra set of cat and more restricted intake contributed to the 3 hp decrease. __________________ N51- PI - PE - ESS Tuned - SSK - CDV Delete - AFE Header - B12 - Mfactory LSD
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12-20-2023, 08:14 PM	#16
bimmer0717zz Registered 0 Rep 3 Posts Drives: e92 330i Join Date: Dec 2023 Location: china iTrader: (0)	Im so confused my engine is n52b30bf Im not sure what means by bf
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