135i Turbo Engine (N54 / N55), Exhaust and Drivetrain Modifications [Archive] - M5POST - BMW M5 Forum

Tan goop in valve cover (2 replies)
How old is your battery? (1 replies)
Drive shaft prop shaft rear seal replacement (2 replies)
Save time by doing FMIC, charge pipe, radiator, and coolant lines at same time? (2 replies)
Catless downpipe smell (4 replies)
Custom tuning 135i n55 (0 replies)
135IS ppk2 fan relay warm (2 replies)
Can you help identify this squeek? (2 replies)
Banging noise (0 replies)
Random misfires after car sat for a month (2 replies)
Advice on 135i (N54) possible purchase? (4 replies)
Lost heat after radiator change (4 replies)
135i 15in rear conversion (0 replies)
Coolant line will not fit between thermostat and turbo outlet (3 replies)
N55 vanos bolts (1 replies)
Vanos brands (0 replies)
GS6-53BZ/DZ manual trans accidental bolt/pin removal (1 replies)
Delphi coils (0 replies)
TC/DSC not Turning Off and No LC - 2012 N55 DCT (2 replies)
4 codes not sure the issue (4 replies)
Can anyone help with these sudden issues? (10 replies)
Noise from DCT (2 replies)
Replaced my 135is flywheel with a M4 Flywheel (0 replies)
Graph reading help (9 replies)
PS2 Tuning Help (10 replies)
A noob wanting to returning E85 135i with N55 back to Stock map (1 replies)
Possible to get the N55 to sound anywhere like an M4? (8 replies)
135i n55 2012 exhaust sound enhancement (2 replies)
2008 135i e88 n54 (1 replies)
Catted Downpipe for 2012 135i N55 (8 replies)
MHDv10 2+ Tune looking for advice to keep going (5 replies)
E88 14' Valvetronic dead? (3 replies)
N54 (335i) engine swap into e81 or e87 parts and to-do list? (0 replies)
Separating shifter from shifter arm (2 replies)
N55 Turbo Rebuild [Advice?] (3 replies)
Super slow spooling plz help (1 replies)
Cooked throwout bearing (0 replies)
Possible DV Leak? Not meeting Load/Boost/MAF Targets (0 replies)
Cylinder 5 misfire (8 replies)
Going Water to Air (14 replies)
Can anyone share OBD.INI file from ISTA? (0 replies)
Anyone have an LSD on their DCT e82? (0 replies)
Pure600 Wastegate Flap and Bushing size (0 replies)
DME codes following Turbo upgrade and valvetronic replacement (1 replies)
Car shuts off No codes or CEL (0 replies)
should I switch from Cobb to mhd? (9 replies)
MHD help. Car doesn't like anything other than stock (5 replies)
Is this typical? Dirt in spark plug holes (1 replies)
HELP! Pulling my few remaining hairs out. N54 - 30BB **SOLVED** (3 replies)
2011 N55 E82 valvetronic issue ? (2 replies)
What is this part? (6 replies)
N54 Wastegate 0% duty cycle (17 replies)
N55 motor mount install help (1 replies)
Too much E85 --> Fuel Pump shutdown? (1 replies)
N55 Strange Noise? (2 replies)
Bulletproof driveline? (0 replies)
Click during accel./decel at ~12mph - not exhaust flap (2 replies)
Misfire (1 replies)
N54 turbo replacement (3 replies)
Name this intercooler (5 replies)
Will Stock Wheels Fix in The Back for Transport (1 replies)
Potential hpfp/boost leak/timing issues?? (2 replies)
Bay Area Smog? (0 replies)
Rev limit with PS2 turbo upgrade (2 replies)
Misfire code and thermostat code help (0 replies)
Lightweight flywheel worth it? (5 replies)
Clutch slave cylinder install (0 replies)
HELP! Wiring Harness (1 replies)
M2 N55 Valvetronic Exhaust Retrofit to 135? (2 replies)
Boost hoses (0 replies)
08 135i project help! (0 replies)
Custom MHD tune and adding JB4 (0 replies)
Tuning the N55 - is it basically torque (load) based? (2 replies)
Misfires on 4,5, and 6 under load (3 replies)
New intercooler info for 135i e82 n55 (2 replies)
135i - 29DC after WOT (1 replies)
Coolant lines - which would you replace at 100k if replacing the water pump? (4 replies)
What's a good OEM equivalent radiator? Worth going all aluminum (stage 1 max)? (2 replies)
N55 Spun crank hub? (1 replies)
Code 002A82 - DME: Vanos intake + Clearing VANOS adaptations (10 replies)
LiquiMoly does not recommend W40 in the N55 (12 replies)
Coolant Leak - where is this coming from? (20 replies)
VSRF Exhaust Upgrade, Do I need a tune? (2 replies)
135i transmission replacement? (0 replies)
Project / Build log: my ultimate daily (0 replies)
Wet carpet- please help! (1 replies)
Help!! VVT error codes after coding/new battery (0 replies)
Help!! VTT error codes after coding/new battery (0 replies)
N55 Hesitation, low power, no code. Potential WG issue? (1 replies)
135i N55e low boost to 4k rpm (DV recently cleaned) (0 replies)
n54 Cracked Oil Pan or Bad Casting? (1 replies)
HELP! Trying to diagnose misfires on n54 135i (3 replies)
Code 30FF and no boost (8 replies)
Back in the saddle (7 replies)
Anyone interested for stage 1 for n55 engine? (0 replies)
Help! Misfires left and right after an oil change (9 replies)
MHD Logs, Feel hesitate or noisy when full accelerate to 160km/h (0 replies)
Not 100% healthy N55? (7 replies)
2DCE Fault - NO NOISE FROM ENGINE N55 2013 135 (1 replies)
Driveshaft Moving When Removing Driveshaft Nut for LSD Install (2 replies)
Why am I getting 29F4 & 29F5 with catless downpipes? (3 replies)
DME Active Codes 29E2, 2CFB & 2D09 (1 replies)
Is there a practical way way to add a temperature gauge to these cars? (3 replies)
CDV delete, clutch spring removal, and/or UCP? (8 replies)
Three positive battery connections? (2 replies)
FX350 Clutchmasters install - Very loud - Video (2 replies)
CM725 Twin Disk Issues (4 replies)
Gutted Downpipe Sound + PE (1 replies)
California Tuners, what's a no-no for smog? (5 replies)
Really like MHD V10 map (2 replies)
Ring around start/stop button (3 replies)
Low Boost warning - shot vac lines? (10 replies)
How To Fix Ovaled/Loose Injector Bore (No More N54 Misfires!) (2 replies)
N55 Constant PCV Failure (18 replies)
Difficult Downpipe Fitment Issue (1 replies)
HELP!! 29CC Combustion misfires on E70 Port Injection Tune (4 replies)
Power steering pump clicking noise (2 replies)
MHD Logs (8 replies)
2011 135i Coolant Leak (2 replies)
Stalling at a quarter tank of fuel (9 replies)
E82 135i N55 electrical issues driving me crazy (7 replies)
Not hitting boost target and corrections on all cylinders (1 replies)
Oil leak burning off of down pipe / cat, trouble locating source (9 replies)
Catless DP and MHD Regarding Emissions Question (2 replies)
Dinan or Berk Technolgy exhaust? (9 replies)
scammers (2 replies)
Anyone figured out how to use aftermarket RAD fan? (9 replies)
N54 Hard Misfire (logs attached) (0 replies)
CSF Radiator Questions (20 replies)
Anyone running the HPS Intake for the 135i n55? (0 replies)
M Factory Limited Slip with 3.46 – Anyone do this one? (24 replies)
magnaflow muffler (7 replies)
New tune -> limp mode (2C58,2C86,2C7F) (2 replies)
Any alternative to $3K worth of injectors? (8 replies)
High Pressure Fuel Pump Upgrade??? (0 replies)
Center support bearing orientation (0 replies)
2011 N55 Alternator Help (1 replies)
Help: OEM foam between rad and condenser? (1 replies)
Tension strut removal (6 replies)
2009 135i Single Turbo (0 replies)
Limp Mode no codes (7 replies)
N54 Missfire (8 replies)
2C86 charging pressure / limp mode after valve cover replacement (5 replies)
Another PS2 no bottom end and not hitting target (6 replies)
2011 135i troubles (22 replies)
mhd n55e (6 replies)
Pure Turbo BMW N55 PURE750 **NEW PRODUCT** (12 replies)
closed deck build. (7 replies)
Troubleshooting sudden mass fault codes (4 replies)
Coding Sidemarkers off NCSexpert (3 replies)
Yellow Brake Light/Dashboard Flickering (1 replies)
BMW N54 - DME: Exhaust VANOS, mechanism. (1 replies)
looking for the cream of the crop (3 replies)
E82 N55 Turbo removal RHD (0 replies)
Installing water meth kit using stock washer reservoir (1 replies)
Opinons on these $1,000 coil pack? (2 replies)
Has anyone done a big turbo N55? (bigger than pure stg 2) (3 replies)
Blew my N55 engine :cry: (10 replies)
Cabin air filter tray install (1 replies)
Boost oscillation and not reaching target. Wgdc. (3 replies)
Pure turbo core charge (1 replies)
Is Bavarian Autosport a Reputable Brand? (3 replies)
Gearbox/transmission light (3 replies)
Mobile 1 Series clutch replacement video (2 replies)
N54/n55 bellhousing bolt patterns (1 replies)
Do you need an LSD on the 135i? (5 replies)
6 or 8 Bolt Crankshaft? (3 replies)
8HP70 up for grabs (0 replies)
TTE460 v TTE550 Turbo for N55 (0 replies)
N54 lower radiator hose leak (0 replies)
N55 block not reusable? (3 replies)
Anyone have a cobb tune stage 2+ (9 replies)
135i n55 dct misfires cyl 2,3,4,5,6 after VCG and spark plug replacement !! (4 replies)
N54 top mount kit in n55 car (2 replies)
I8A0S damos verification (0 replies)
2012 DCT N55 on MHD Stage 1+ running too lean? (w/ data logs) (0 replies)
ekpm2 coding for e100 / higher amp load (1 replies)
Catch can - RB turbo external vs. Bms vacuum kit (2 replies)
Upgraded turbos (1 replies)
Need help with engine noise pls (6 replies)
Jerkiness after letting go of throttle? (7 replies)
which coolant hose is this ? (0 replies)
N54 misfire (6 replies)
Supporting mods for VTT stage 1 turbos? (4 replies)
2E7C (0 replies)
Log review request (8 replies)
N55 ideal oil pressure (1 replies)
VRSF Catted DP + Custom Y Pipe Sound Impression [N55] (3 replies)
AT Transmission options (5 replies)
Occasional louder exhaust tone and burbles (n54 135i) (8 replies)
4n Motorsports Bottom mount Single turbo kit (5 replies)
Whitbread Wavetrac and Diff Cover (2 replies)
2013 135i massive turbo leak gets worse (2 replies)
Serious HPFP Question, please help me save money. Which is correct one? (5 replies)
Kies Motorsports 1m bumper (0 replies)
Help me pick an exhaust! (28 replies)
Does anyone sell n54 dp fix? (3 replies)
Throbbing hum while cruising (8 replies)
N55 manual transmission (7 replies)
CRC Valve Cleaner for free (0 replies)
rear ps pump mounting bolt n54 (0 replies)
N55 PS2 Boost Leak? (3 replies)
DCT overheating (6 replies)
N55 Rod bearing diy? (6 replies)
Exhaust Cam Issues (0 replies)
powersteering pump brackets (2 replies)
Oil Leak at motor Seam (2 replies)
N54 6AT trouble shifting into 4th gear when NOT on throttle (5 replies)
2012 e88 n55 - chargepipe (2 replies)
Fueling Gremlins (5 replies)
Squeaking Noises When Engine is Cold (5 replies)
Need help diagnosing rough idle (4 replies)
2AAF + Loss of power. Changed all fuel system already (0 replies)
shredded belt (10 replies)
P2418 evap emission valve (0 replies)
Injector HELP asap (0 replies)
MHD Stg2 - Catted Downpipe (11 replies)
VRSF Race 7.5" Intercooler Review/Install Tips - N54/N55 (1 replies)
JB4 w/MHD BEF (0 replies)
Bought a 135i with MHD, but PO doesn’t know log in. (4 replies)
Waste-gate failure, upgrade? HELP? (0 replies)
Software for BIN MHD tuning/modification?????? (2 replies)
n55 low boost/target? (0 replies)
VTT “GC” N54 to B58 Coil Conversion Kit Now Available ***NEW PRODUCT*** (0 replies)
Alternative "cowl filter" mod - No water Entry (3 replies)
Unresonated midpipe for n55 cars (1 replies)
What's your custom exhaust? (3 replies)
Misfire codes during WOT. (1 replies)
Surging on throttle and letting off (32 replies)
N55 belt hiss (0 replies)
big problem e82 n55 (1 replies)
Ticking/Rattle Under Intake Manifold (3 replies)
Swapped Intake, rough start no communication to ECU (5 replies)
N55 exhaust rattles on low RPMs (1 replies)
135i Turbos not building boost (2 replies)
Have pure stage 2, no bottom end power? (15 replies)
Lower Charge Pipe Keeps Slipping Off (2 replies)
Front subframe 6 bolts torque spec (2 replies)
No reverse, 2011 6MT (0 replies)
N54 Powered race car needing HELP - Wastegate (6 replies)
Ecu dme programming auto manual (0 replies)
No lift shift activating on its own (2 replies)
N55 rod bearings recommendation (1 replies)
Can I share my logs here? 135i JB4+MHD - Doc Racing ST Kit w/ E85/91 + Meth (0 replies)
Coding - Remove Engine Fan? (1 replies)
Vrsf inlets replacement filters (0 replies)
engine codes today (7 replies)
400 whp N54 Build Help - Pure Stage 2 (3 replies)
Bmw widebody! (0 replies)
IAT sensor location (1 replies)