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E90/E91/E92/E93 (2006 - 2013)
The E9X is the 4th evolution of the BMW 3 series including a highly tuned twin turbo 335i variant pushing out 300hp and 300 ft. lbs. of torque. BMW continues to show that it sets the bar for true driving performance! -- View the E9X Wiki

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  #1  
Old 11-06-2013, 08:49 AM
Nerdboss Nerdboss is offline
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Is Sulev slower/less responsive?

Hey guys. I've been trying to find a 2011 328i with sport package and navigation with tan Dakota interior. All of the ones that I've found are in california and are SULEV. Any issues with the SULEV N51 vs the normal n52? Also any advice on how to buy one without having to travel from Oklahoma all the way to California to pick it up?
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  #2  
Old 11-06-2013, 11:51 AM
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floydarogers floydarogers is offline
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There should be no difference in performance.
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  #3  
Old 11-06-2013, 12:06 PM
fdriller9 fdriller9 is offline
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Yea I think it's mainly emissions related differences. Not 100% though

But those emissions regulations can be restricting (especially in CA) so maybe it does lose some power, idk...
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  #4  
Old 11-06-2013, 02:00 PM
mr_bean mr_bean is offline
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Is Sulev slower/less responsive?

I have an N51 and have driven only one or two N52s. The N52 seems to have a little more low end torque but this is strictly "butt dyno" measurements.
The N51 seems to make a little more racket at the top end but pulls just as hard.

The differences are slight and you'd be hard pressed to notice anything unless you drove them side by side.


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  #5  
Old 11-06-2013, 02:58 PM
staplescenter staplescenter is online now
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Re: Is Sulev slower/less responsive?

Just got an 08 328i a month ago. Im pretty satisfied with it but never drove another e92 so I can't compare. I do have a manual transmission if it matters.

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  #6  
Old 11-06-2013, 03:32 PM
ArsenalEd ArsenalEd is offline
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I bought a 2009 328i SULEV from Arizona and have driven the N52 as well. No difference that can be felt or recognized by a regular driver. I actually have the exact car you are describing and enjoy it. I ended up flying out to Arizona and driving it back, definitely wasn't the most fun I've had but made me feel better than trusting some "towing expert" to ship it.. Hope that helps!
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  #7  
Old 11-07-2013, 05:02 AM
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mgthompson mgthompson is offline
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The N51 has slightly lower compression than the N52, but the N51 has DISA to make up for it. You probably won't notice any difference.
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  #8  
Old 11-07-2013, 05:16 AM
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CALWATERBOY CALWATERBOY is offline
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Quote:
Originally Posted by Nerdboss View Post
Hey guys. I've been trying to find a 2011 328i with sport package and navigation with tan Dakota interior. All of the ones that I've found are in california and are SULEV. Any issues with the SULEV N51 vs the normal n52? Also any advice on how to buy one without having to travel from Oklahoma all the way to California to pick it up?

Dunno, but do know of at least one diff: Low pressure fuel pump replacement requires whole fuel tank to be replaced. Really, I'd stay away from this limited production, can-be-expensive-to-repair AlGoreMobile.

Do you believe in Global Warming?
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Old 11-07-2013, 09:46 AM
White335I White335I is offline
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Quote:
Originally Posted by CALWATERBOY View Post
Dunno, but do know of at least one diff: Low pressure fuel pump replacement requires whole fuel tank to be replaced. Really, I'd stay away from this limited production, can-be-expensive-to-repair AlGoreMobile.

Do you believe in Global Warming?
I started reading about the fuel pump/tank replacement and found different answers. Here is a link that says it is not required to replace the entire tank.. Please read post #3 Any thoughts?

http://forums.bimmerforums.com/forum...SULEV-Concerns

Last edited by White335I; 11-07-2013 at 09:49 AM.
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  #10  
Old 11-07-2013, 02:23 PM
mr_bean mr_bean is offline
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Is Sulev slower/less responsive?

Quote:
Originally Posted by White335I View Post
I started reading about the fuel pump/tank replacement and found different answers. Here is a link that says it is not required to replace the entire tank.. Please read post #3 Any thoughts?

http://forums.bimmerforums.com/forum...SULEV-Concerns
On early SULEV engines it was required. On the N51 the pump can be replaced without replacing the tank.


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  #11  
Old 11-07-2013, 09:11 PM
alpinweiss alpinweiss is offline
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Quote:
Originally Posted by mr_bean View Post
On early SULEV engines it was required. On the N51 the pump can be replaced without replacing the tank.
Correct. AFAIK, only the M56 engine had the single piece, completely sealed fuel system.

For N51 engine (SULEV):

Fuel Tank:
http://www.realoem.com/bmw/showparts...87&hg=16&fg=05

Fuel Pump:
http://www.realoem.com/bmw/showparts...88&hg=16&fg=15

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