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


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  1. Stock car with jb4 overboosting after going ISO
  2. 135is DCT revs up to 1k on stop
  3. Need help with some codes
  4. Do I have an Alpina Flash?
  5. Manual trans rumble noises
  6. (n55) will our 135i's ever be as loud as jdm cars?
  7. Looking for DME power reduction tables
  8. Slight Misfire
  9. Exhaust Rattling Against Drivetrain
  10. Transmission Problems
  11. mhd 13.5psi only
  12. Questions about drilling/tapping the intake manifold for proper BOV operation!
  13. Where can I buy performance exhaust without Pipe?
  14. Pure stage 1 n55
  15. BMS SSK
  16. Does the ZF S6-53BZ transmission fit?
  17. Another water pump failure
  18. 135i Best Possible Mods!
  19. Where to get the best water pump and thermostat? (135is convertible)
  20. Pcv?
  21. Performance Oil Cooling Ducting
  22. best reliable replacement turbo for the n54
  23. Dp fix
  24. Check engine after jb4 install
  25. Ever wondered how to ceramic coat your downpipes? Here's an easy DIY!
  26. bmw 2cf9 throttle valve potentiometer 1 ?
  27. Im a complete noob that needs mod suggestions
  28. DCT is really sluggish
  29. JB4 fuel/map question
  30. Accidentally discovered my 135i has a JB4 today, and I already have one on the way!
  31. Unsettling N54 deceleration sound
  32. N54 Single Turbo Build
  33. any HPF exhausts out there?
  34. Avail Tunes
  35. labor hours guesstimate?
  36. COBB with 135is
  37. 135 1-M
  38. Post downpipe install, car sounds terrible
  39. Wastegate rattle or not ? (after having installed catless downpipes) (sound record)
  40. I have 2 JB4's, and one is giving me problems.
  41. Possible CLutch Issue?
  42. Need help with HPFP (N54)
  43. Are these noises normal?
  44. Most bang for the bucks to increase hp
  45. Looking to purchase this BOV kit
  46. Turbo install question
  47. Precision Racewerks Port Injection Kit
  48. Stett Performance Stainless Vacuum Canister Install
  49. Wedge Review - BimmerGeeks! Pro-Cable - Cuts flash time @ in half.
  50. What's the correct Negative Idel reading?
  51. Reverse Gear in Transmission Question
  52. Drag Racing DCt 135i with PS2 Turbo
  53. Supersprint quad exhaust N55
  54. Need help installing chargepipe
  55. Certain year N54 not to buy?
  56. Forge FMIC installed, small gap and lower grill questions
  57. 2011 135i DCT Failure HELP!!!
  58. Increase Speed
  59. N54 Stage 2 Datalogs
  60. IJE0S or I8A0S?
  61. N55 Rattling Noise During Cold Start
  62. N55_ISO_14 Question
  63. N55 Data log help
  64. JB4 G5 ISO sterring wheel control menu settings not saving
  65. Wanting a tune but so lost in the forums..help !
  66. Cutted off two small sections of vacuum lines, is it bad ?
  67. BMR 3.5 inch exhaust unboxing / overview
  68. Is there any reason to go PI with 100% E85
  69. 2011 135i Plugs and Coils
  70. RB Next gens capability?
  71. VRSF 7" HD INTERCOOLER! | Road to 400WHP on 93 octane build
  72. PPK burbels missing
  73. N52 Intake, Exhaust, & Tuning
  74. N52 Intake, Exhaust, & Tuning
  75. Is it possble to use the GS6-53BZ (n54 trans) on a N55?
  76. My DCT lag, idle issue, and lurching problems.
  77. RB Turbo inlet and VRSF FMIC install
  78. HPFP FROM Ebay
  79. VCG Replaced With New Issues
  80. 2013 135is Plug Change at 75k miles
  81. car wont start!!!
  82. whats the correct engine splash shield? (my dilemma)
  83. Pure Stage 2 DD pics
  84. Deleting Mid-Pipe Resonators with PE Exhaust ?
  85. 30ff code after PS2 and PR inlet install
  86. Feedback on Codes Please
  87. Blown HG, cracked head, or....?
  88. N55 Burning Coolant?
  89. Is this a stock intercooler?
  90. Already have a tune, just need opinions please.
  91. p29dc code with limo mode HELP
  92. Competent driveshaft shop needed for 1M conversion
  93. N55 E Series E85 JB4 Developments!!
  94. Who does custom tunes for MHD only? (I need a custom tune)
  95. 2012 N55 tunes
  96. Should i be worried about this???
  97. Who wants to tune my n54? RB turbos, inlets, etc...
  98. BMW Performance Power Kit N54 version question for Owners
  99. To LSD or not?
  100. Your MHD burble settings
  101. 135I N54 turbos
  102. Long trip coming up, CEL came on with these codes
  103. MHD later this year
  104. n54 motor locked after walnut blast
  105. Request : Auto Trans Cooler Setups !
  106. N54 Rumbling at WOT Mystery
  107. Please review my datalog !
  108. Dead Transmission
  109. JB4 stack on evolve technik ecu flash tune
  110. ER Chargepipe BOV Question
  111. Old issue, Tee mod
  112. Manual Swap
  113. Juggernaut's 2008 Alipina White 135i
  114. Need N55 ECU pin outs
  115. Vacuum line question
  116. FBO 91oct dyno results: 395hp/469tq
  117. Running Temp, HELP!
  118. What tool do you use for programming battery, ekps, and cas module?
  119. Downpipe
  120. Type wastegate on '13 135is
  121. DIY: OEM BMW Performance SSK, RE Trans Mounts, Whiteline RSFB Inserts, Diff Lockdown
  122. Storing E85 and pumping it into the car (options please)
  123. BMW PPK warranty. Does it have one?
  124. Keep my '03 350Z or move on to a BMW 135i?
  125. E-Water Pump
  126. Help Unmarrying Cobb
  127. JB4 installed, cel show codes 2C83, 2C71, 2C58
  128. Do I need to remove my airbox to install an oil catch can?
  129. 2012 135i (all stock) Dyno numbers, normal?
  130. Rogue Engineering Transmission Mounts Review
  131. Exhaust Rattle
  132. Engine Malfunction
  133. N54 - won't start after clearing codes
  134. Smoking When Coming To a Stop -- An N54 Owner's Right of Passage
  135. On going transmission issue. Pls advise
  136. MHD stage 1 1/4 mile times
  137. JB4 backend flash
  138. Hot weather log
  139. COBB Pro-tune
  140. Stock N54 VS N55 with only JB4+Intake, What will make more power?
  141. LPFP Removal?
  142. Twisted tuning and running e85
  143. DPFIX Install w/ JB4
  144. Rattle/tapping at 1800-2000 rpm
  145. Rod bearings in N54 / N55 vs S85 / S65
  146. Why BMW shops?
  147. Help! No Boost - Need Your Input
  148. Port Injection?
  149. N55 Oil Everywhere! Help identify possible locations of a leak...
  150. JB4+P3 Gauge = CEL and Engine Malfunction?
  151. Boost gauge help
  152. ExhaustMeister and PPK
  153. Direct ignition coil R8?
  154. No DS sport mode, what should I try next?
  155. Help ASAP (High/Low pressure fuel sensors)
  156. ****** n55 O2 fix
  157. DIY Performance Exhaust Mod question
  158. BMW refuses to replace HPFP
  159. Starting up issue
  160. N54 coils- Bosch or Eldor
  161. Engine Malfunction!
  162. Vibration when put in gear?
  163. Cylinder 3 & 4 Misfires
  164. Pure Turbos N55 Stage 2 (PS2) results, reviews, install tips and docs, pictures, etc
  165. Any 2013 135is owners wanting H&R OE Springs?
  166. High-pitch noise on 135i [solved - exhaust valve vacuum hose]
  167. MAF sensor and charge pipe leak.
  168. Performance Exhaust Muffler Only?
  169. Stumbling/Rough Idle (otherwise pulls hard)
  170. My Experience Installing PR Stage 3+ LPFP and PR/MMP Port Injection
  171. My Experience Installing MMP Stage 3 Turbos
  172. Black Market Racing 3.5" straight pipe exhaust
  173. JB4 Menu 11 throttle sensitivity
  174. Metallic Noise Coming From Transmission Area
  175. JB4, dp fix and the ensuing misfires/limp mode
  176. N55 and Catless Downpipe - Will N54 Midpipe Reduce Cold Start Sound?
  177. n55 dct mhd pump fuel custom tune
  178. What I believe to be the best N54 sound - BMR 3.5" exhaust
  179. N55 stock+PPK boost @ 12+ PSI
  180. N54 logs before rod bearing failure
  181. My 2 year fuel pressure issue and scanning OBD2 on 135i
  182. help w fault codes
  183. Drone/Horrible Rasp
  184. 30ff code after fuel pump upgrade
  185. DANGEROUS! 135i N55 6mt Shutting Off After WOT. - Loose Steering wheel control
  186. Clamp wont hold coupler on chargepipe/intercooler
  187. Berrymans or marvel add to oil?
  188. N55 turbo reliability
  189. Turbosmart plumb kit diverter adjusting issues
  190. New CEL and Engine Malfunction... This car will be the death of me
  191. Fuel Pump Value
  192. Whats Best for Exhaust sound? Sound Clips, Advice?
  193. Question about Xhp transmission flash
  194. Broken downpipe stud help!!! N55
  195. Electronic or pneumatic wastegate? 2012 E82
  196. DYNOS: How to read the numbers, understand them and compare it to others - MUST SEE!
  197. Possible boost leak?
  198. Dinan DIY kit
  199. My clutch install sucks! i hate my SMF
  200. N54 - fixed my wastegate rattle
  201. Aftermarket FMIC install question
  202. 2D2E code, MAP sensor?
  203. Any way to find out if the turbos have already been replaced just from the VIN?
  204. Cutch Help!! I'm in desperate need.
  205. exhaust clip VRSF Stock gutted 2nd cats
  206. What's Available for Aftermarket Resonated Midpipes for N55?
  207. Teaser pics of the NEW WAGNER EVO III Intercooler
  208. waiting for the next v8 swap
  209. Installed MDesign Performance Carbon CAI
  210. Need help buying!
  211. Coils and plugs for N55.
  212. Installed Agency Power Ti Tip Axle-Back on N55
  213. Sprung Clutch disk VS unsprung disk noise
  214. E82 N55 w/JB4 - can't pass DMV
  215. PURE Stage 2 waste gate?
  216. VRSF DP Berk Mids Berk Street Cat back
  217. 135i convertible in snow
  218. 2 Step and Low fuel pressure sensor
  219. what is the next modification ?
  220. 135i vrsf relocated inlets
  221. Clutch, LSD, Turbo...12' N55 need help
  222. What is diameter of oem exhaust?
  223. MHD N55e Open Beta DME Unlocks for your 135is! SSR|PERFORMANCE
  224. Drivetrain slop
  225. White/blue smoke
  226. Blue smoke/oil smell
  227. Why you should run the JB4 + Flash instead of just the Flash
  228. Can i use 93oct (or octane booster) with a MHD 91oct map ?
  229. Pass Inspection.
  230. Catless DP front o2 sensor
  231. How to correctly measure the ambient temp ? (Forge FMIC testing, IAT logging)
  232. Basic Bolt On Discussion
  233. Is anyone running the OTS MHD Stage 2 flash on a DCT N55 135i?
  234. Anyone try the F02 coolant tank in a 1er?
  235. Show me your Meth Tank Bottle Installs!
  236. exhaust
  237. RTD Shifter Group Buy
  238. 135i | N54 |diagnosing misfire
  239. N54 91 ACN Timing corrections
  240. N55 Denso Alternator Rebuild kit
  241. Race Chip Opinions
  242. Engine Malfunction!
  243. 135i N55 M3 Cowl Mod?
  244. MHD Flasher N54
  245. Pure stage 2 lead time?
  246. Can you fit a 335i diff onto a 135i? (different input flanges issue)
  247. Axle back exhaust for n55 135i
  248. Exhaust for my 2012 n55 135i
  249. NEW! VRSF E Chassis N55 Outlet Pipe!
  250. What did I blow: clutch, flywheel, transmission?