328i = SULEV

jasper · 10-23-2006, 05:41 PM

Interesting find...

http://www.epa.gov/orcdizux/datafile...MON_INI_R1.PDF

It has 2 listing for the 328i, one is ULEV and one is SULEV (this is for US only).

What's the deal? Will it be a special California version only maybe? Anybody have details of engine differences?

Thanks.

jasper · 10-23-2006, 05:42 PM

just noticed something... engine is listed as n51 for sulev and n52 for ulev

67bmer · 10-23-2006, 06:50 PM

what does it all mean?

Bob T · 10-23-2006, 07:41 PM

Some good email addresses in the document. Why bitch to the dealer when you can fire off an email to the top engineers.

SP330 · 10-23-2006, 08:00 PM

Quote:

Originally Posted by 67bmer

what does it all mean?

ULEV= ultra low emissions

SULEV = super ultra low emissions (hybrids and some cars in cali)

John 070 · 10-23-2006, 08:01 PM

The N54/335 is a 50-state car....lifted the hood on a PA car and it had the word "California" on the EPA label...

rrandyy · 10-23-2006, 08:30 PM

Does this mean I get to apply for and ride in the carpool lane in SoCal?

///Matt · 10-23-2006, 09:12 PM

no, Sulev cars don't get diamonds, as far as I know...

CALIFORNIA 328 BUYERS!
DON'T GET A SULEV! it will be gutless, and boring. get the REGULAR 328i.

The e46 Sulev (M56) has more engine problems than ANY other e46, and has NO GUTS. very slow.

Matt

xx3 · 03-11-2007, 04:51 AM

Quote:

Originally Posted by ///Matt

no, Sulev cars don't get diamonds, as far as I know...

CALIFORNIA 328 BUYERS!
DON'T GET A SULEV! it will be gutless, and boring. get the REGULAR 328i.

The e46 Sulev (M56) has more engine problems than ANY other e46, and has NO GUTS. very slow.

Matt

Sounds like you know about BMW SULEV engines... Please elaborate on the differences between a SULEV & a ULEV car...

RiXst3r · 03-11-2007, 08:11 AM

SULEV also gets the GM auto tranny

STE92VE · 03-11-2007, 09:31 AM

I have been doing research on this since I got my VIN and found out my 328i was being built with the N51 engine. This is what I know so far.

This is from BMW introduction of 2007 engines:
N51 Overview
In order to comply with SULEV requirements, the N51 is another variant of the N52
engine. There are various measures to meet the EPA/CARB standards, some of which
are familiar from the previous SULEV (M56) engine.
Some of the SULEV measures for the N51 include:
• Near engine catalyst with additional underbody catalyst
• Secondary air system
• Optimized combustion chamber geometry in cylinder head
• Modified piston crown for lower compression
• Plastic valve cover with integrated crankcase vent valve and separator (from N52KP)
• Stainless steel fuel lines with threaded connections
• Radiator with “Prem-air” coating
• Throttle system - EGAS08 carried over from N52KP
• Airbox with Activated carbon filter for EVAP control
• Purge system pipes are made from “optimized” plastic

There are 5 states that adhere to CARB SULEV engine requirements. CA, NY, ME, VT & MA. The N51 is being used in both auto and manual trannies.
It is basically the same engine as the N52 with slight modifications that reduce the CO2 emissions. As far as performance, I'm told there is no perceptable difference to the N52 other than that it adds about 30 lbs. to the car.
I'm waiting for my car to get on a ship in Bremerhaven and I will gladly post my impressions after I take delivery. If anyone else has the N51 and is currently driving it, maybe you could post your impressions as well.

LEDZEP · 03-11-2007, 09:42 AM

Whew! Sure am glad I'm getting the REAL engine in my car!

Just kidding Steve...

Ain't I a rascal?

Jaws · 03-11-2007, 12:41 PM

Quote:

Originally Posted by STE92VE

• Modified piston crown for lower compression

Which should equal less power. Also, there was some discussion in another thread as to why the curb weight of the 328 has increased so much vs the 325. I suspect that the weight of the N52 328 has not increased very much. It looks like the N51 may be maybe quite a bit porkier due to the added emissions equipment. Less power and more weight is usually not a good thing.

STE92VE · 03-11-2007, 02:59 PM

If I feel I've been shortchanged on the power rating, I'll have the engine dyno'd and if it's it not within advertised specs, I would think a class action suit would be in order. Thinking that BMW isn't that shady, I would hope this isn't the case.
We shall see.

DFW_M · 03-11-2007, 04:27 PM

Quote:

Originally Posted by ///Matt

no, Sulev cars don't get diamonds, as far as I know...

CALIFORNIA 328 BUYERS!
DON'T GET A SULEV! it will be gutless, and boring. get the REGULAR 328i.

The e46 Sulev (M56) has more engine problems than ANY other e46, and has NO GUTS. very slow.

Matt

That is interesting.
Honda for example in Cali has 2 HP less than the rest of us...I drove them both and did not feel any difference. Why is the Bimmer screwing things up so much?

ElCapitan · 03-11-2007, 04:28 PM

How do you find out if you have the N51 or the N52?

STE92VE · 03-11-2007, 04:34 PM

Quote:

Originally Posted by ElCapitan

How do you find out if you have the N51 or the N52?

Either look on your engine block where it is inscribed or let me know the 4-7 digits of your VIN and I'll be able to tell you. PM me if you want.

ElCapitan · 03-11-2007, 04:48 PM

Quote:

Originally Posted by STE92VE

Either look on your engine block where it is inscribed or let me know the 4-7 digits of your VIN and I'll be able to tell you. PM me if you want.

Thanks buddy.

LEDZEP · 03-11-2007, 05:31 PM

Quote:

Originally Posted by STE92VE

If I feel I've been shortchanged on the power rating, I'll have the engine dyno'd and if it's it not within advertised specs, I would think a class action suit would be in order. Thinking that BMW isn't that shady, I would hope this isn't the case.
We shall see.

Wanna race?

But seriously, don't let your blood pressure get too high until you get the car and give it a workout. The power might be measurably different to instruments but not to the driver.

But if there really is a problem, this is a matter for your legislators more than BMW. I'm certain BMW would rather leave the engine pure.

Oh, did I mention I'll have the N52? Just wondered if I'd mentioned that...

STE92VE · 03-11-2007, 05:33 PM

Quote:

Originally Posted by LEDZEP

Oh, did I mention I'll have the N52? Just wondered if I'd mentioned that...

This is where you can put your N52

purplewidow · 03-11-2007, 05:33 PM

hybrids are a joke!!!!!! biggest car company con right now!!! i could buy a diesel and kill a prius and get my constant 40 mpg which is what i KNOW some prius owners get around me!!! hybrids are a joke right now in the future they will rock but right now...THEY are pointelss the technologie just isn't there...esp when i can take one of the lexus modesl the g something and look at the NON-HYBRID car and it has LOWER annual gas consumption than the hybrid!!!!!!! i mean that is a joke in itself!!!!! why do they even bother!!!! when i saw that i was like why do people buy these toyota's pieces oh shiat!!!! diesels are way way more eficient now and california hates them...stupid cali!!!!!! don't vote for arnold he is an idiot!!!!! so funny how they voted for him and now look things just keep getting worse!!! even though i don't think he is too concerned with emissions..i mean he is the hummer man!!!!!!
________
Walmart Gift Cards

Zeiss · 03-11-2007, 05:38 PM

What about Canada?

10-23-2006, 05:41 PM	#1
jasper Private First Class 21 Rep 106 Posts Drives: 2002 325i Join Date: Jan 2006 Location: San Ramon, CA iTrader: (0)	328i = SULEV Interesting find... http://www.epa.gov/orcdizux/datafile...MON_INI_R1.PDF It has 2 listing for the 328i, one is ULEV and one is SULEV (this is for US only). What's the deal? Will it be a special California version only maybe? Anybody have details of engine differences? Thanks.
	Appreciate 0 Tweet Quote

10-23-2006, 05:42 PM	#2
jasper Private First Class 21 Rep 106 Posts Drives: 2002 325i Join Date: Jan 2006 Location: San Ramon, CA iTrader: (0)	just noticed something... engine is listed as n51 for sulev and n52 for ulev
	Appreciate 0 Quote

10-23-2006, 06:50 PM	#3
67bmer Private 24 Rep 77 Posts Drives: BMW 325is, e92 328i Join Date: Mar 2006 Location: md iTrader: (0)	what does it all mean?
	Appreciate 0 Quote

10-23-2006, 07:41 PM	#4
Bob T Private 3 Rep 92 Posts Drives: 330i, Jet Black, BMW Motos Join Date: Nov 2005 Location: Michigan iTrader: (0)	Some good email addresses in the document. Why bitch to the dealer when you can fire off an email to the top engineers.
	Appreciate 0 Quote

10-23-2006, 08:01 PM	#6
John 070 Lieutenant General 1706 Rep 14,829 Posts Drives: 335i cpe Join Date: Oct 2006 Location: ZSP/ZPP/ZCW iTrader: (0)	The N54/335 is a 50-state car....lifted the hood on a PA car and it had the word "California" on the EPA label...
	Appreciate 0 Quote

10-23-2006, 08:30 PM	#7
rrandyy Captain 31 Rep 799 Posts Drives: E92 328 Join Date: Sep 2006 Location: California iTrader: (0)	Does this mean I get to apply for and ride in the carpool lane in SoCal?
	Appreciate 0 Quote

10-23-2006, 09:12 PM	#8
///Matt United States Marine 318 Rep 2,748 Posts Drives: 2007 Dodge Ram 1500 Join Date: Jul 2006 Location: Los Angeles iTrader: (8) Garage List 2006 330i [0.00]	no, Sulev cars don't get diamonds, as far as I know... CALIFORNIA 328 BUYERS! DON'T GET A SULEV! it will be gutless, and boring. get the REGULAR 328i. The e46 Sulev (M56) has more engine problems than ANY other e46, and has NO GUTS. very slow. Matt
	Appreciate 0 Quote

03-11-2007, 08:11 AM	#10
RiXst3r 274 Rep 6,510 Posts Drives: M235i Join Date: Sep 2006 Location: Ohio iTrader: (14)	SULEV also gets the GM auto tranny
	Appreciate 0 Quote

03-11-2007, 09:31 AM	#11
STE92VE STEVIL Empire 219 Rep 6,297 Posts Drives: Fast Join Date: May 2006 Location: Long Island, NY iTrader: (0)	I have been doing research on this since I got my VIN and found out my 328i was being built with the N51 engine. This is what I know so far. This is from BMW introduction of 2007 engines: N51 Overview In order to comply with SULEV requirements, the N51 is another variant of the N52 engine. There are various measures to meet the EPA/CARB standards, some of which are familiar from the previous SULEV (M56) engine. Some of the SULEV measures for the N51 include: • Near engine catalyst with additional underbody catalyst • Secondary air system • Optimized combustion chamber geometry in cylinder head • Modified piston crown for lower compression • Plastic valve cover with integrated crankcase vent valve and separator (from N52KP) • Stainless steel fuel lines with threaded connections • Radiator with “Prem-air” coating • Throttle system - EGAS08 carried over from N52KP • Airbox with Activated carbon filter for EVAP control • Purge system pipes are made from “optimized” plastic There are 5 states that adhere to CARB SULEV engine requirements. CA, NY, ME, VT & MA. The N51 is being used in both auto and manual trannies. It is basically the same engine as the N52 with slight modifications that reduce the CO2 emissions. As far as performance, I'm told there is no perceptable difference to the N52 other than that it adds about 30 lbs. to the car. I'm waiting for my car to get on a ship in Bremerhaven and I will gladly post my impressions after I take delivery. If anyone else has the N51 and is currently driving it, maybe you could post your impressions as well. __________________ 2007 E92 328i 6MT-Space Gray/Black Dakota/Gray Poplar w/heated seats-PCD 4/27/07 (SOLD) 2009 E90 328i xDrive 6AT-Space Gray/Oyster Dakota/Dark Burl Walnut w/ZPP,ZCW,Xenons-ED 4/17/09 - Redelivery 5/30/09 (SOLD) 2014 E84 xDrive28i 8AT-Alpine White/Black Nevada/Silver Matte w/ZMV,ZLP,494 - DD 3/14/14 (SOLD)
	Appreciate 0 Quote

03-11-2007, 09:42 AM	#12
LEDZEP Lieutenant General 418 Rep 12,276 Posts Drives: 2009 E70 & 2011 F25 Join Date: Jun 2005 Location: Area 51 iTrader: (0) Garage List 2011 X3 35i M Sport [7.62] 2009 X5 M Sport [0.00] 2007 328xi E90 [0.00] 2006 325xiT E91 [0.00]	Whew! Sure am glad I'm getting the REAL engine in my car! Just kidding Steve... Ain't I a rascal? __________________ I think it is bad luck to be superstitious
	Appreciate 0 Quote

03-11-2007, 02:59 PM	#14
STE92VE STEVIL Empire 219 Rep 6,297 Posts Drives: Fast Join Date: May 2006 Location: Long Island, NY iTrader: (0)	If I feel I've been shortchanged on the power rating, I'll have the engine dyno'd and if it's it not within advertised specs, I would think a class action suit would be in order. Thinking that BMW isn't that shady, I would hope this isn't the case. We shall see. __________________ 2007 E92 328i 6MT-Space Gray/Black Dakota/Gray Poplar w/heated seats-PCD 4/27/07 (SOLD) 2009 E90 328i xDrive 6AT-Space Gray/Oyster Dakota/Dark Burl Walnut w/ZPP,ZCW,Xenons-ED 4/17/09 - Redelivery 5/30/09 (SOLD) 2014 E84 xDrive28i 8AT-Alpine White/Black Nevada/Silver Matte w/ZMV,ZLP,494 - DD 3/14/14 (SOLD)
	Appreciate 0 Quote

03-11-2007, 04:28 PM	#16
ElCapitan Lieutenant Colonel 38 Rep 1,762 Posts Drives: 2007 E91 328xi & 2008 E90 335i Join Date: Dec 2006 Location: North Bay, ON iTrader: (2)	How do you find out if you have the N51 or the N52? __________________ *2008* E90 335i \| Silver Grey \| Terra \| Piano Black \| ZSP \| ZKO \| ZAT \| ZKI \| ZPL \| ZKL \| *2007* E91 328xi \| Black Sapphire \| Terra \| ALuminium \| ZKO \| ZKI \| ZPL *Past Cars:* 2004 ///M3, 2002 E46 330xi, 2003 GTI 1.8T, 1996 Neon
	Appreciate 0 Quote

03-11-2007, 05:33 PM	#21
purplewidow Lieutenant Colonel 51 Rep 1,928 Posts Drives: e92 335 Join Date: Feb 2007 Location: Chicago iTrader: (2)	hybrids are a joke!!!!!! biggest car company con right now!!! i could buy a diesel and kill a prius and get my constant 40 mpg which is what i KNOW some prius owners get around me!!! hybrids are a joke right now in the future they will rock but right now...THEY are pointelss the technologie just isn't there...esp when i can take one of the lexus modesl the g something and look at the NON-HYBRID car and it has LOWER annual gas consumption than the hybrid!!!!!!! i mean that is a joke in itself!!!!! why do they even bother!!!! when i saw that i was like why do people buy these toyota's pieces oh shiat!!!! diesels are way way more eficient now and california hates them...stupid cali!!!!!! don't vote for arnold he is an idiot!!!!! so funny how they voted for him and now look things just keep getting worse!!! even though i don't think he is too concerned with emissions..i mean he is the hummer man!!!!!! ________ Walmart Gift Cards Last edited by purplewidow; 03-29-2011 at 07:36 PM..
	Appreciate 0 Quote

03-11-2007, 05:38 PM	#22
Zeiss Lieutenant Colonel 341 Rep 1,864 Posts Drives: Bicycle Join Date: Jan 2007 Location: Vancouver iTrader: (0)	What about Canada?
	Appreciate 0 Quote