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View Full Version : 135i Turbo Engine (N54 / N55), Exhaust and Drivetrain Modifications


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  1. Guesstimate on power levels
  2. More misfire with colder plugs?
  3. 07-08 N54 injector recall
  4. N55 PS2 install: Do I have everything?
  5. Logs check MHD
  6. MHD Help
  7. N55 engine overheating
  8. Need expert help, blowing through plugs, logs included
  9. E46 M3 LSD into 135i
  10. N55 MHD Log Check
  11. N54 *high idle* after new plugs and coils.
  12. ECU question
  13. High Pitch Squeaky Noises
  14. Serpentine belt part #
  15. N54 Injector Recall Ugrade To Index 12?
  16. Intake after 130k miles (pics)
  17. N55 pops and bangs map
  18. Serpentine belt options
  19. Is this wastegate rattle?
  20. What sounds better? Resonator delete vs PE mod
  21. 135i N54 Pure600 video
  22. Whistle sound w the jb4
  23. Slight blue smoke at steady RPM's in sixth gear
  24. what is these two boxes in engine bay
  25. Misfiring after removing and replacing charge pipe
  26. 135i flashing map back to stock with DCAN/INPA
  27. Cobb to MHD is it worth the switch?
  28. Exhaust Options
  29. Swapped Intake Ton of codes??? Help!
  30. Tial to HKS BOV Adapter?
  31. N55 serpentine squeal/chatter
  32. Burnt / Corroded Coils N55 MHD Stage 2+
  33. Intermittent oil smoke, bad turbos? Probably
  34. OFHG diy questions
  35. Cylinder 4 misfire codes. Sputtering, running rich
  36. Need fueling suggestions for PS2
  37. Turner Motorsports Single Mass Flywheel Feedback
  38. ATM Intercoolers - still in business?
  39. Engine modified and new map... advice?
  40. Oil in Intercooler/charge pipe ?
  41. Realistic Expectations with N55
  42. Misfire Cyl 1
  43. Misfire Issues with MHD Monitor function....
  44. What Do You Guys Make Of These Weird Noises
  45. Ofh
  46. Custom 3" Quad Tip Exhaust Results
  47. Timing Corrections - Logs Inside
  48. 135i N54 ghost misfire on high boost/gear
  49. 135i auto to manual swap question.
  50. 135i clutch part number
  51. Hard shifts 3rd to 4th, trans and DSC malfunction. Engine code P17E8
  52. Thinking of adding silicone inlets... Anything to watch out for?
  53. N54 Custom Mid Pipe Thoughts
  54. Clutch kits
  55. Blown pipe
  56. Rear seat delete for one series
  57. HPFP recommendation? Hesitation after bolt ons
  58. HKS BOV spins ??
  59. Cylinder head thermostat housing/hose
  60. All 135i options do not work no codes!!!!!!!
  61. Mad Dad Mid-Pipe - Any interest in a group buy?
  62. Broken vacuum line nipple - options??
  63. BMS BOV Vacuum Adapter Question
  64. 135i Fuel Gauge Issues
  65. AC Delete
  66. N55 135i blown headgasket?/ motor ***update included***
  67. Er chargepipe
  68. CSF cooling products... fitment?
  69. N54 Started, died, now only cranks
  70. Info about bmw performance exhaust
  71. Positioning of resonator to reduce drone?
  72. New turobos and mods, now black smoke at high RPM WOT
  73. B58 Swap In Bmw 120i E87
  74. 135i n54 logging
  75. Will 2007 335i engine/trans fit in 2008 bmw 135i?
  76. What to look for in logs?
  77. N55 error messages, what's the root cause?
  78. O2 Sensor Heater Fuse Location? HELP!!!!
  79. 1m upgrading turbos. What else to do while I am down there!
  80. Faulty Half Engine Light???
  81. Need a new cylinder head
  82. Help with some logs
  83. * Admin remove *
  84. 135i N55 Boost leak (BOV)
  85. N55 Speed Tech Stage 3 EFR7670 Kit
  86. LOG
  87. Violent shaking upon acceleration, or turning right..?
  88. v-band hell
  89. LPFP upgrade fail! Help!
  90. HELP 550i clutch LUK DMFW doesn't fit.
  91. n54 throttle closure and boost over target.
  92. Mystery Device 135i DME
  93. Yellow brake light
  94. Vanos Solenoids - Which Brand?
  95. Help! Engine misfiring - half check engine light
  96. Wiring Innovate AFR gauge to factory wideband sensor?
  97. Turbo health question???
  98. Boostane question
  99. MMP Contact
  100. Anyone running mafless on N55?
  101. Hole in Oil Pan ? New Motor?
  102. Figuring out possible boost leak with datalog?
  103. My First BMW - A Build Thread (N55 DCT 135i Build)
  104. WORLD RECORD: Manual BMW 135i runs 10.3 @ 134mph!
  105. Custom tune MHD n54
  106. Oil leak? Makes no sense
  107. JB4 or NO JB4 ??
  108. Hiccup in datalog during 3rd gear WOT run
  109. MHD tune question
  110. What happened to my tune?
  111. Vacuum leak?
  112. Leaking Injector? Logs Attatched
  113. Where to buy M-Sport steering wheel?
  114. Relocated coolant tank
  115. XHP DCT Flash released
  116. DIY Audi R8 coils
  117. 135i N55 - Not hitting requested PSI?
  118. Valvetronic actuator disconnect
  119. Will a 2011 335i Engine fit my 2011 135i?
  120. BMW 135i Pure Turbos Pure600 Review
  121. Vrsf catted downpipe
  122. Fuel Gauge rising when turning car to "ON"
  123. Jb4 map 2 or 5?
  124. M2 Exhaust on E82?
  125. Rumble and vibration after Wavetrac install
  126. 2009 135i ate a belt
  127. oil catch problem
  128. "Sound Generator" attached to my charge pipe
  129. Engine Codes
  130. I have to believe this is the reason for my cylinder 1 misfire.. rust on coil
  131. VRSF stock location inlets
  132. n54 2009 135i vanos help please !
  133. Motor Mount Replacement
  134. Vrsf gaskets/clamps
  135. Coding to disable airbag light
  136. Limp mode at the track
  137. E85 Set Up
  138. Datalog shows LPFP sensor pinned at 55.7 psi
  139. Outlet to hot side intercooler connection
  140. Manual to Auto Diff Conversion
  141. Aluminum guibo FUBAR - video!!
  142. What codes are these?
  143. Anyone run Tial QR (recirc) on N54?
  144. 3rd outlet in charge pipe.
  145. Oil level question.
  146. Bimmercode on late 2007 n54 135i?
  147. N55 MEVD1726 - 2A15 Low Voltage Short, Misfires, Failed DME?
  148. Installed berk street mid pipes and now there’s a slight rattle..
  149. E82 dual exhaust to quad exhaust??? Is it possible
  150. Looking for catted downpipe without cel
  151. Vargas GC Turbo for N55 EWG
  152. Do 2011 E87 headlights fit 2008 E88 ?
  153. Slow start when hot
  154. 128i help
  155. Hp numbers on 93 octane with various setups?
  156. What part is this? In front of coolant expansion tank.
  157. *NEW* Injen X-Pedal Pro Black Now Available!
  158. Disable BMW Throttle Adaptation?
  159. Pure Stage 1 N55 install
  160. removing JB4 chip
  161. 2013 n55 first mods
  162. installed berk mid pipes and now i can hear a slight wastegate rattle
  163. 2011 135i N55 downpipe removal v-band problem
  164. Oil thermostat bypass question (pros & cons)
  165. Need help removing Idler pulley!!
  166. Power randomly cuts out for 1 sec, but comes back on with rail pressure spikes
  167. Rear diffuser undertray part name / #
  168. Newly acquired 2011 135i N55 DCT with questions and concerns.
  169. Rod bearing replacement in my future?
  170. MHD N54 Low Boost Target / Timing Pulls? Logs Attatched
  171. 135i clutch pressure problem need help
  172. Blackline Taillights
  173. N55 serpentine belt - too short?
  174. Replacing coolant level sensor
  175. Flash Options
  176. VTT stage 2 stock fueling base map
  177. Car suddenly "overheating" and then not, repeatedly
  178. AWD N54 Trans Vs RWD
  179. Phoenix Catless Downpipes? (N54)
  180. E82 135i N55 - Misfiring :(
  181. The VTTO valve cover breather to solve PCV Squeal
  182. MHD Tuning Question
  183. N55 Stage 2+ tune - reliability?
  184. 1M replica rear bumper and custom exhaust/muffler
  185. Coding and map writing software
  186. Coolant temp and thermostat codes
  187. White smoke from hood after stopping, burnt rubber/oil smell
  188. Car won't rev in park or neutral past 3k RPM
  189. Clutch stop install issues
  190. Looking to purchase secondary cats and oem downpipes
  191. Have I gone as far as I can go
  192. Old JB4 Firmware?
  193. Oil catch can installed
  194. Waterpump started turning on after Key-Off, immediately after bleed procedure
  195. Help me understand power potential!
  196. Datalog from MHD
  197. Questions about KB4 + MHD BEF
  198. Twin turbo or Single turbo for 550whp?
  199. Bellhousing Inspection Port Plug P/N?
  200. Water Pump Seepage?
  201. Mastery of Art & Design N54 & N55 Downpipes ***NEW PRODUCTS***
  202. Should I get inlets if I am on pump gas only?
  203. Anyone have a clip of this exhaust?
  204. Doc Race Bottom Mount!!!
  205. Cold Weather/Cold Start Leak at Oil Thermostat Delete Plate?
  206. 1M exhaust??
  207. OS giken differential
  208. Please help! Is this rod bearings ?
  209. n55 Pure800 pwg & ewg beta
  210. PPK tune?
  211. PE exhuast
  212. Installed VRSF catted downpipes and now...
  213. MHD- Constant Codes + cold start stalling
  214. 135i N55 Exhaust Reccommendations?
  215. Car Going to Catch Fire!?
  216. DCT 2.56 diff, bolted or welded?
  217. Is there a way to find out of I have a hybrid turbo?
  218. multiple passenger stage 2 airbag fault
  219. 3/4" Hose Good for Oil Cooler Use
  220. Supporting mods ?
  221. Redline D4, D6 or MT-LV?
  222. N54 turbo caked with oil, extensive smoke
  223. 17T hybrids
  224. 3D Printed Air Scoop Help
  225. Silicone coolant hoses
  226. Turbo, etc inspection
  227. Will a F80/F82 M4 tranny fit in 2011 N55 135i
  228. Single Turbo Vs pure stage 2 (Drift Car Build)
  229. N55 / N54 Water Pump Failure (Complete Walkthrough!)
  230. Help diognosing please!
  231. 91 fuel on e30 tune
  232. Car won't start but will crank
  233. Motor mounts
  234. Looking to upgrade my Turbos
  235. Suggestions on quieting n54 exhaust
  236. Questions about WMI and PI.
  237. What would cause this code?
  238. Refurbished injectors?
  239. 1M MHD & JB4 help needed
  240. Failed MHD unable to reach DME
  241. Little sludge on injectors?
  242. The cat craze
  243. Luk 03081 repeat 550i/335is clutch kit
  244. In pursuit of making my car better
  245. xHP Question/Help
  246. Suspect Engine Oil Temperature Error
  247. Clutch type Lsd Advice
  248. Help! Loss of power. Surge of power. Error code 0029D0
  249. Limp mode during WOT pull N55 E88
  250. Think turbo is gone... and now it's upgraded!