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View Full Version : N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i


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  1. Synapse BOV+Chargepipe combo
  2. INPA Help
  3. Weird misfire
  4. Is this a sign of a bad turbo seal(s) ?
  5. Hard shifts after tranny and diff fluid change
  6. BMW 335I 13K Miles
  7. "Majesty" eBay stepped IC logs VS stock and some questions
  8. BOV recommendations?
  9. Your experience going from N51/N52 to N54?
  10. Suspension mods to improve hard/drag launches?
  11. 6AT Malfunction
  12. PE mod video of all rev ranges
  13. VTT GC turbos failed 3 times in 3 years, read before you buy
  14. Stock Diverter Valve Failure...help to diagnose pls
  15. Going from Cobb to MHD
  16. Catted Downpipe options
  17. Cobb stage2+aggressive map..Passed emission!!!
  18. 2012 335is DCT Speedtech single turbo build
  19. Fixing my biggest complaint with my auto 335i, proper trans tuning now available.
  20. Prolong n54 Injectors?
  21. 7 SES codes, bad misfire, was fine prior to VCG
  22. Hissing noise from the near surrounding of air intake
  23. Error Code help
  24. Strange Misty Leak
  25. Difference between N54 short block?
  26. RB Game Finishers 630whp @25psi Full E85 Single Shotgun
  27. Is my crankshaft seal toast?
  28. Royal Purple Max ATF in 335i?
  29. Just thought I’d share...
  30. Help diagnosing a sound. (2008 335xi coupe 6mt)
  31. Has anyone here ever rebuilt a ZF 6HP21 transmission? Tips?
  32. Turbo Coolant Lines
  33. Precision Racewerks Coils - New Colour and Install Pics
  34. Walnut Blasting
  35. N54 p07ff code?
  36. Consistently overboosting during spool?
  37. Stock DVs on FBO N54 small flutter?
  38. 700WHP N54 TwinTurbo a realistic goal?
  39. MHD flash fail
  40. Jb4 just for nls + 2 step?
  41. N54 Stock Turbo - Balancing Spec OEM
  42. Upgraded Coils on Stock Turbos
  43. 335i Noise Over 3k
  44. Qustion about 93 oct. gas
  45. Boost Leak?
  46. HKS SSQV BOV with Upgraded Hybrid Turbos?
  47. Bmw e92 335i OIL LEVEL inactive
  48. Boost suddenly low (HELP)
  49. Well then...
  50. Electrical failure and christmas tree lights all over the dash 😔 Help!!
  51. Why is my car so loud?
  52. Alignment pulls right when turning sharp right left. Alignment pulls left when turnin
  53. What should I look out for when buying 335i?
  54. Cracked pcv valve cap :( any suggestions lol
  55. MHD broke ECM?
  56. Advice needed desperately here.. car won’t start
  57. Question regarding our boost solenoids
  58. Power Steering Cooler Quick Connect Size?
  59. Single turbo swap
  60. No sound from speakers.
  61. Aluminum water pump.
  62. Torquing question
  63. N54 135/225/Z4 DCT Transmission Gear Ratio
  64. Fmic install help
  65. What's my next step for making more power?
  66. Water pump ground bolt?
  67. 30ff, most culprits checked out, need clarification on a few things
  68. Help: Steering wheel column creaking noise
  69. Going to quad tip exhaust
  70. Help! Oil in coolant
  71. White Smoke after Valve Cover DIY
  72. Colder spark plugs/ coils
  73. Best Route For Injector Coding
  74. MMP Shipping Time
  75. Oversized con rod bearings availability?
  76. Recommended upgrades to go along with my DAW stage 2+ turbos?
  77. AFE - Momentum vs Magnum Force
  78. 8 bolt/6 Bolt clutch/long block question?
  79. Misfire leads to Mixed Fuel Injectors!
  80. rod knock?
  81. MHD Flash Successful --> No Crank No Start
  82. VRSF Downpipes
  83. Need help with my 30FF code/boost leak (possible loose plug under my vacuum canisters
  84. IAT increase during normal driving
  85. Ignition Ground Cable Short
  86. LPFP sensor going nuts under load
  87. MHD 2+ STFT variance, misfire and bank 2 plugs black
  88. Chargepipe Oring vs Oil Filter Oring ?
  89. What should I be looking for
  90. Engine stall after throttle blip
  91. Advice wanted on stripped spark plugs
  92. P1327 knock sensor low input
  93. What oil do you run in your N54...and how often do you change it?
  94. Current mileage?
  95. Hexon rr600 turbos for sale
  96. Ethanol content at Conserv Fuel in West LA
  97. N54 Crank Pulley Deal ... Good or Bad?
  98. Active Autowerke Diaphragm Removal Help
  99. N54 Rough idle issue
  100. First time logging MHD
  101. Single turbo 335xi vs 335i
  102. Negative Fuel trims at Idle
  103. N54 issues, and mod questions
  104. Is there any benefit to upgrading turbos with stock fueling?
  105. Dealer wants $6K to replace catalytic converters
  106. Running the OEM LPFP together with PI
  107. lag in power when shifting 1 to 2 gear after installing after market parts
  108. Turner Valved Exhaust
  109. Clutch break in period question !
  110. Big HP guys with ZF 6-speed autos.....who built/modded your trans?
  111. n54 head resurfacing
  112. Cooling upgrades
  113. BMW PE Question
  114. My DAW Stage 2+ data logs
  115. Methanol Injection as Carbon Cleaning?
  116. Oil Cooler Thermostat - OE Replacement?
  117. E92 335i 6MT curb weight surprised me!
  118. Planning on making custom single turbo manifold
  119. PURE 600 or DAW Stage 2+ (775RS)
  120. Upgrading fuel line for e85
  121. 01/21/2020, emissions recall campaign 10e-a02: Replace fuel injectors
  122. ARM N54 1k 7.5" Race FMIC
  123. How much can the DCT clutch take before it starts slipping?
  124. Issues Starting In Cold Weather
  125. Misfires/stuttering ONLY when fuel tank is full. Vent valve has been replaced. Help?
  126. Index 11 and 12 compatibility?
  127. What tools are needed for mhd datalogging?
  128. Where do injectors leak from?
  129. Help diagnosing whine/ siren
  130. jb4 logging. Does this look correct?
  131. N54 Main and Rod Bearings
  132. Question about oil viscosity
  133. injector recall document- here ya go guys
  134. Transmission issue
  135. What index is this injector
  136. ECU Tune for upgraded turbos??
  137. n54 valve covers
  138. White smoke, need an advise
  139. Quiet and strange sounding BOV
  140. MHD Wireless Adapter
  141. Long start after sitting warm
  142. Strange issues after installing jb4
  143. Wastegate rattle FIX using a spring
  144. MHD Freezes while Monitoring
  145. LPFP sensor and HPFP replaced, car still dies in traffic
  146. Any other parts needed for upgraded turbos?
  147. Cool YouTube video on hybrid turbos.
  148. Repeated injector failure on cyl 6
  149. FBO research
  150. Are these normal STFT and LTFT? Leaky fuel injector diagnosis
  151. Possible Turbo Replacement
  152. 2AAF code, took some logs
  153. Could a bad PCV Hose causing white smoke? HELP
  154. Help Analyzing N54 cylinder 1 head black/wet
  155. MHD wifi and waze
  156. 335i transmission questions
  157. Self Adjusting Clutch and Single Mass Flywheel fitment issues?
  158. Whoo hoo! First coil replacement!
  159. MHD v8.1 Issue
  160. Problem with my Transmission?
  161. Is anyone running ARM Motorsports Inlets?
  162. VTT CNC Modular Billet Valve Cover & Dual Catch Can setup (review)
  163. N54 DME Issue (Crank, No start)
  164. Mhd and fuel economy
  165. N54 injector recall
  166. Bosch oem plugs ok for mhd stage 2+ stock turbos?
  167. Help with a series of codes
  168. Post Cat O2 Sensors
  169. What quad tips for mtech rear bumper?
  170. Smoke from Driver's Side of Engine?
  171. How to find which tuning platform my car has?
  172. Stupid Question
  173. Wahlbro 450 stage 2 Q
  174. Another fuelling issue
  175. Partial Exhaust Upgrade
  176. Very rough idle on cold start - help! FIXED!!!!!
  177. Single Turbo Regret?
  178. Strange sound? Cause to many problems? Help!
  179. 2D2E 2D2B
  180. Looking to go single turbo. Need help
  181. Gas pump keeps shutting off before tank is full
  182. Soft brake pedal when turning engine on
  183. N55 short block in n54 car???
  184. Oil leak
  185. ARM Motorsports 1K FMIC
  186. Smoking after rebuild and new turbos!
  187. Vacuum when Oil Cap Removed or Not ?
  188. MHD 9.0 Beta maps are out
  189. N54 used engine WANTED Europe
  190. 2aa0 camshaft sensor inlet signal
  191. Is the N54 Engine from the 740I interchangeable with the N54 on a 335i/335IS?
  192. BMW PE Mod Piping Size
  193. fuel injector bad¿; help diagnosing
  194. Weird Random O2 Sensor reading. HELP
  195. Lambda Probe TEST in INPA
  196. Coolant Hose Part Number
  197. Intercooler front plastic removal
  198. N54 Multiple Codes after Valve Cover Gasket Replacement
  199. Educate me on the N54 PCV system…and catch cans.
  200. N54 leaking oil….even after sitting for weeks. Any idea where it’s coming from?
  201. N54 IC on m20 turbo?
  202. How frequently to change ignition coils and spark plugs?
  203. Talk me into/out of installing inlets
  204. N54 550hp turbo options
  205. 08 335I strange noises
  206. N54 E90 335i Build Pre-planning (500whp)
  207. Repair/Replace Driveshaft 335is
  208. delete
  209. RWD to XDrive
  210. Need help with P/N compatibility
  211. Which oil weight for MHD ST2 N54?
  212. N54's,335i 0-60 times
  213. Consensus: Is the AC Pulley replaceable?
  214. Keyless entry not working, but keyless start does
  215. Stock turbo N54 with new VTT wastegates, still rattling
  216. Question: Full bolt on, stock tune.
  217. N54 index 12 injectors $170
  218. Wastegate rattle really bad after JB4 install
  219. M3 driveshaft and csb tension
  220. Gas residue on top of injector
  221. Thoughts on Remus Exhaust for N54
  222. Stage 2 lpfp?
  223. Looking for Catted downpipes.
  224. Aftermarket Exhaust....which sounds the best?
  225. JB4 tune kit
  226. Single Turbo Build
  227. N54 Block Decking Tolerance
  228. Spec stage 3+ Pressure plate doesn’t fit mfactory SMFW!?!?
  229. How does our transmission filter work?
  230. Not running an o2 sensor
  231. 2C7B LAMBDA Probe behind catalytic converters 2, signal code?
  232. Still Love My 335i (7 Years Later)
  233. What's your burble set up?
  234. Fuel mixing
  235. Will the DME try to protect the engine when it’s not up to operating temp?
  236. Interest in this build
  237. I think my turbos are whining...
  238. Question for those of you with a VRSF aluminum outlet
  239. 335is keeps going into neutral under load
  240. 2aao not sure what else to do
  241. $30 eBay 335i Exhaust Tips Review (Muffler Delete)
  242. broken A/C condenser support, tilted
  243. N54 missfire at cold start
  244. Some pics of goodies for the new engine build
  245. What can i beat stock turbo n54
  246. MSD80 to MSD81 upgrade
  247. Does MHD remove CAT efficiency CEL??
  248. injectors & Plugs
  249. How bad is my rattle
  250. MHD Stage 2+ E30 V9 Log Review