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N51 n52 difference
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01-20-2013, 12:55 AM | #1 |
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N51 n52 difference
I want to buy a used active autowerke exhaust. the post indicates that it was for an n51 and i have an n52 will the exhaust fit fine?
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01-20-2013, 04:15 AM | #2 |
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Its designed to fit your car.
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[SOLD] 2007 E90 328i - Titanium Metallic l 19" VMR V710 l H&R Trak+ Spacers l M-Sport Rear Bumper l Mtech Rear Lip Spoiler l Hamann Front Lip l Eibach Sportline l AA N52 Signature Exhaust l OEM Blacklines l MTEC V3 AE l 6000K HID l Nokya 7000K Fogs l MTEC License Plate LED l Interior LED l 15% Tint l BlackVue DR380G-HD + PMP
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01-20-2013, 05:41 AM | #3 |
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N51 is the SULEV edition, they changed some stuff in the engine so it saves a little more gas than the N52 I guess, other than that the exhaust should fit and work for you.
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01-20-2013, 01:01 PM | #4 |
EL JIMMY NEURON
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It will fit perfectly fine.
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2007 Jet Black E90 328i
Thread: http://www.e90post.com/forums/showthread.php?t=825249 Instagram: manutd_as |
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01-20-2013, 04:58 PM | #5 |
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The exhaust should fit an N52 as intended with no issues. Check the emissions sticker under your hood. If it says SULEV then you have an N51. ULEV is N52.
I assumed I had an n52 till I checked. If you haven't looked, you really should. I was a bit surprised. On N51's the pipe after the resonator is a larger diameter than the N52 cars and I needed to have it welded on. For N51 cars, a couple inches will need to be cut off of the AA exhaust so that it'll weld up properly. I have some pictures on a review thread I posted a few months back if you're curious. |
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02-04-2013, 08:40 PM | #8 |
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Wait a second a n51 has a 3 stage manifold?
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2009 Alpine White E92 N51 328i Automagic | Premium & Sport Pkg. | Coral Red/Black Dakota Leather Interior | M-Spor | BMW Performance Exhaust | Active Autowerke Headers | BBS CH-R | CPS Front Lip | Performance Front Grills | 888Concepts Custom Headlights (GONE)
2011 Alpine White E90 N55 335i Automagic |
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02-04-2013, 08:42 PM | #9 |
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2007 TiAg 328xi: AA Tune, AFE intake, Full exhaust, 335xi Brakes, H&R RSB, UUC FSB, H&R Sports, Billy Sports...BBS SR 17x8
1985 Gazelle Beige 325e: Poly everything, e24 3.25 LSD, 225 lb weight reduction, Corbeau FX1, Shifter machined by me, roll bar, harness, all the other goodies. My "Racecar"...15x7 BBS RA |
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02-04-2013, 08:44 PM | #10 |
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Then doesn't that mean the n51 cars come from the factory with more power overall?
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2009 Alpine White E92 N51 328i Automagic | Premium & Sport Pkg. | Coral Red/Black Dakota Leather Interior | M-Spor | BMW Performance Exhaust | Active Autowerke Headers | BBS CH-R | CPS Front Lip | Performance Front Grills | 888Concepts Custom Headlights (GONE)
2011 Alpine White E90 N55 335i Automagic |
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02-04-2013, 09:19 PM | #11 |
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no. the compression ratio of the n51 is lower.. not by much, just a little. I am pretty sure the n51 also has an extra set of cats. someone can correct me if i'm wrong, but i think those are the two biggest differences
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2007 TiAg 328xi: AA Tune, AFE intake, Full exhaust, 335xi Brakes, H&R RSB, UUC FSB, H&R Sports, Billy Sports...BBS SR 17x8
1985 Gazelle Beige 325e: Poly everything, e24 3.25 LSD, 225 lb weight reduction, Corbeau FX1, Shifter machined by me, roll bar, harness, all the other goodies. My "Racecar"...15x7 BBS RA |
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10-22-2013, 07:42 PM | #12 |
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I didn't know about the extra set of cats, interesting.
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10-27-2013, 11:25 AM | #13 |
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Drives: E90 "328i" N51
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I have an N51. From all my knowledge gained from reading about the 3 stage and such, if you get a AA stage 2 tune done on a n51 it's close to the power of a 330. Just as if a N52 got a 3 stage and then got the tune. I could be wrong but that's what I was told by many people. Currently on my n51 performance wise I have PE, PI and AA Stage 2 and loving it.
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10-27-2013, 06:21 PM | #14 |
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both US N52 N51 came with secondary cats, but N51 unit are more denser.
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N51- PI - PE - ESS Tuned - SSK - CDV Delete - AFE Header - B12 - Mfactory LSD
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