135i Turbo Engine (N54 / N55), Exhaust and Drivetrain Modifications - BMW 1 Series Coupe Forum / 1 Series Convertible Forum (1M / tii / 135i / 128i / Coupe / Cabrio / Hatchback) (BMW E82 E88 128i 130i 135i)

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135i Turbo Engine (N54 / N55), Exhaust and Drivetrain Modifications

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	Rating Thread / Thread Starter	Last Post	Replies	Views
	Sticky: 2007 Engine Tech: How the N54 turbo engine works (must read!!!) ( 1 2) Harold	04-06-2026 01:30 PM by Sourd9	36	152,967
	Sticky: My DCT lag, idle issue, and lurching problems. ( 1 2 3 4 5) zx10guy	12-04-2024 07:59 PM by homewrecker07	89	123,633
	Sticky: Anyone know what the inside of the PE muffler looks like? ( 1 2 3 4 5 ... Last Page) e36addict	06-22-2023 10:38 PM by Sapper	125	215,060
	Sticky: Warning to those post 03/08 build 135i owners wanting to tune ( 1 2 3 4 5 ... Last Page) mikeo	04-15-2023 05:40 PM by Pot_Pie_35i	190	297,749
	Sticky: DIY installing N55 mid pipes on a N54... ( 1 2 3 4 5 ... Last Page) Dackelone	09-16-2022 12:46 AM by uzone02	163	289,580
	Sticky: calling all 6MT SSK guys... ( 1 2 3 4 5) Dackelone	09-08-2022 09:58 PM by Cadubya	104	172,495
	Sticky: fluid change 135i dct transmission, pentosin vs ravenol ( 1 2) Alcor	01-29-2022 08:13 PM by ryokeley12	32	80,005
	Sticky: N55 Engine Full Technical Info and Service Information Manual Jason	01-28-2022 08:23 AM by Veriz	16	66,010
	Sticky: Updated DME software and got fun noises.. ( 1 2 3 4 5 ... Last Page) e36addict	12-09-2021 11:59 AM by Joe@TopGearSolutions	376	333,436
	Sticky: New CEL and Engine Malfunction... This car will be the death of me ( 1 2 3 4) Matticus91	09-28-2021 12:58 PM by Tallicia	78	155,640
	Sticky: photos of the HPFP from BMW AG engine model... ( 1 2) Dackelone	06-19-2021 10:25 AM by mistacarder	38	57,755
	Sticky: Official 135i Exhaust Sound Clip Thread ( 1 2 3 4 5 ... Last Page) NY SLC 93	06-16-2020 09:30 PM by b3turbo	500	423,851
	Sticky: UUC magnetic oil drain plug... ( 1 2 3 4 5) Dackelone	08-19-2019 07:42 PM by Dackelone	94	156,386
	Sticky: DCT delay fixed ( 1 2 3 4 5 ... Last Page) elzorro4	05-28-2019 10:22 PM by SoFloE82	112	174,523
	Sticky: 135i: ZF or Getrag auto transmission? ( 1 2 3) winthorp	04-21-2018 06:03 PM by ShocknAwe	47	91,729
	Sticky: More N55 info ( 1 2 3 4 5 ... Last Page) scs	04-03-2014 05:38 PM by bradleyland	171	335,608
	Sticky: Useful Warranty Information.(A must read if you have mods) ( 1 2) Riss Racing	02-25-2014 08:33 PM by johngrossi	42	111,993
	Sticky: N54 Technical Service Bulletins mikeo	11-05-2008 02:28 PM by mikeo	2	60,764
	Sticky: NHTSA High Pressure Fuel Pump Investigation atr_hugo	08-05-2008 07:06 AM by atr_hugo	0	49,402

	Steering Angle Sensor or Clock Spring? AndyW	08-13-2026 07:58 PM by GoRomeo	6	262
	OEM+ S65 1M Clone ( 1 2) Mineral_///M	08-13-2026 10:57 AM by Mineral_///M	22	1,001
	E82 135i N55 blue smoke on warm starts nkeor	08-08-2026 09:47 AM by nkeor	0	224
	Are CATTED downpipes worth it on 135i N54? bmwisme	08-03-2026 01:10 AM by e80two	4	382
	n55 low boost/target? torresadrian	07-29-2026 04:26 PM by Cobra1956	1	1,276
	Successful F8x M3/4 6MT retrofit e80two	07-27-2026 06:53 AM by moose09876	16	4,002
	OEM manual shifter alternatives for N54 135i lucadenhez	07-22-2026 06:27 PM by lucadenhez	6	2,228
	431whp & 522 lb-ft torque stock turbos. fast1eddy	07-17-2026 10:59 AM by fast1eddy	2	425
	Transmission noise / vibration on decel only moose09876	07-13-2026 01:07 PM by moose09876	2	249
	Fuse Diagram for part# 9119444... Fuse panel is buzzing cprovenzo	07-13-2026 12:27 PM by dtla1	3	1,228
	need second opinions on data logs rodne82	07-11-2026 12:14 PM by rodne82	0	220
	Bought a 135i with MHD, but PO doesn’t know log in. BMWFERN	07-07-2026 09:03 PM by e80two	6	10,286
	Transmission guidance (6MT/GS6-45BZ) NickD	07-07-2026 10:21 AM by e80two	5	524
	Retrofitted the N54 180a alternator to replace my 170a N55 alternator e80two	07-07-2026 10:17 AM by e80two	0	162
	Boost levels for MHD stage 1 n55e timchump	07-02-2026 04:45 PM by Cannonfodda101	1	362
	Unexplainable clunking! 1erE88	07-01-2026 01:21 AM by YakuzaWAFD	10	3,784
	CD87 - PT CAN Communication Fault houtan	06-29-2026 09:26 PM by turbohugh	12	13,896
	Hardware differences between N55/N54 PPK2? Ferms135i	06-21-2026 02:23 AM by Luxury	2	8,244
	Porsche 981 Seat Swap??? moose09876	06-20-2026 04:53 PM by moose09876	8	3,788
	MHD on N54? LaurentZo	06-13-2026 05:33 PM by Oleg_bimmer_e92	14	7,049
	N55B30A--> N55B30O0/M0 stribly	06-09-2026 07:12 PM by Cannonfodda101	1	1,347
	135i new exhaust - opinions needed WilsoN55	05-28-2026 05:35 PM by Sapper	13	4,517
	N55: moving the MAF to a new intake ( 1 2) katsooba	05-22-2026 02:27 PM by Macro-Mach	25	17,657
	N55 135i all warning lights, no tach, nothing E13	05-13-2026 02:02 PM by E13	3	2,160
	N55 PWG Boost leak test, what am I doing wrong ? timchump	05-13-2026 02:14 AM by timchump	5	1,049
	Misfire and IAT error E13	05-06-2026 10:50 AM by E13	5	1,495
	Oilless and Waterless Turbo? 3nigma	05-05-2026 08:31 PM by 3nigma	9	2,779
	Installation (and coding?) of N55 Powerkit scaramanga	05-05-2026 04:55 PM by scaramanga	0	851
	Battery Relocation Mod (for quad exhausts) Sapper	04-27-2026 07:25 PM by Sapper	0	1,500
	Overheating warning but car isn't actually overheating? ( 1 2 3) Odin2347	04-26-2026 07:35 PM by Buffox	45	164,289
	Unbelieveable NorthernDancer	04-26-2026 04:08 PM by ShocknAwe	2	1,180
	ECS Muffler delete Cat Back E82dude1	04-21-2026 03:06 PM by E82dude1	0	827
	Lose power as engine heats up ( 1 2) sonicgrounds	04-11-2026 04:37 PM by ShocknAwe	27	11,916
	e88 n55 dct xhp creep modes mwpa71	04-10-2026 09:04 AM by MParallel	10	10,560
	terminal 87 3 location semeoneor	04-08-2026 03:18 AM by tpl.mallon	9	10,547
	N55 Clutch replacement tutorial? NickD	03-30-2026 07:00 AM by moose09876	3	1,340

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