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


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  1. Need help passing SMOG
  2. Rough idle, misfires and codes galore. Stumped.
  3. Getting rid of heat
  4. MHD Desensitizing the knock tables
  5. XHP Flashtool failing
  6. Hiccup at Idle
  7. Boost leak?
  8. Auto transmission decel/accel thump noise from underside
  9. Turbosmart Diverters
  10. Resetting adaptations after maintenance/repairs
  11. Catted N54 power
  12. Solenoid DIY Trick
  13. oily spark plugs but compression test is clean
  14. Stock E93 - Flat Spot
  15. Smoke from exhaust but goes away (strange)
  16. Welded (locked) diff on a modded 335xi
  17. Sudden loss of power. No codes.
  18. Do bad turbos puff at idle?
  19. N54 valve spring removal tool
  20. N54 Power in High Temps
  21. N54 Oiling Diagram
  22. N54 missfires and knocking noice
  23. Found a jb4 g4 in my car is it compatible with g5?
  24. Thermostat Temp Sensor
  25. change turbos when doing oil pan gasket?
  26. Recurrent 2C7E Emissions Control Code
  27. In-and-out of power, sluggish
  28. LPFP booster
  29. Delete
  30. New Oil CC Option
  31. boost problems
  32. JB4 as flex fuel?
  33. Anyone have an n54 xdrive oil pan torque sequence
  34. Boost Leak Test
  35. Flashing a custom modified BIN to N54 DME without paid MHD?
  36. Fluid leak from the back of my car
  37. Question about the n54 335i OEM Performance exhaust
  38. Custom xhp settings, need help.
  39. Arizona INPA help
  40. Injector seals as preventative maintenance?
  41. Front turbo leaking on CHRA after WG rebuild
  42. Vibration fixed by using XDelete? Im confused...
  43. Knocking, plethora of codes, about to pull motor...
  44. Upgrading Vacuum DV lines
  45. N54 in E92 M3
  46. Can you identify this n54 sound!
  47. Adaptation Reset / Drive
  48. n54 engine swap thi weekend, ECU and MHD question
  49. Vacuum lines on a RHD
  50. LPFP Pressure Value at WOT?
  51. MHD tune fail need help ASAP please
  52. 2007 335i LPFP Upgrade questions
  53. smog with jb4 and back end flash?
  54. Unknown Flash, safe to over write?
  55. Looking for E93 cat back exhuast system
  56. Does R&R clutch require SAC reset?
  57. Stock downpipes worth?
  58. Drag strip!
  59. (Diagnosing Logs) FBO 2007 E92 335i MHD Stage 2+ v9 Log
  60. To build or not to build....
  61. N54 Inlets Question
  62. Fs: N54 jb4 $100 obo
  63. RPM dips under WOT?
  64. Vrsf Clone Exhaust
  65. Causes for slacking AFR jump to 234?
  66. cold start rough idle leads to stalling
  67. Downpipe recommendation question
  68. Stock Car Heatsoak
  69. Bimmerlife coil problem
  70. Downpipe O2 sensor fried
  71. Fuel-It N54 fuel pump upgrade
  72. Cheap Amazon catch cans....worth it?
  73. What is this siren sound?
  74. Question for DCI and BOV owners
  75. Timing spikes
  76. 335is/550i Clutch Torque Limit
  77. Help Troubleshooting Please (With Log)
  78. Consequences of unplugging the fan
  79. MHD Detectable Once Removed?
  80. MHD wifi dongle
  81. Single turbo parts
  82. How can I go faster stock turbo?
  83. Should I upgrade Coils?
  84. pressure test problems
  85. 2AAF and 2FDB shadow codes, anything to worry about?
  86. What do I need with upgraded turbos
  87. 6HP19 high Adaptation Values – anyone had success?
  88. ...
  89. stock exhaust - a component between secondary cats and end mufflers
  90. Help finding this oil leak
  91. Idle AFR's....what's normal?
  92. Does the mhd back end flash stop the c a t monitor from showing
  93. 30ff, loud turbo sound w/ log
  94. Starter Replacement - Where does this wire plugged into?
  95. Non-OEM V-bands ?
  96. SOLVED Could a bad MSD cause my coolant pump to run constantly?
  97. Dual oil cooler brainstorm
  98. HELPPPPP!
  99. Cylinder 1 and 5 misfire-07 335i e90
  100. San Diego Local n54 Aftermarket Exhaust
  101. Turbo Seal Fun Time
  102. Cooling System Mystery
  103. Helix 3x or BMP P/I
  104. My diy dual oil cooler setup
  105. Leaky injector?
  106. Anyone run Tial QR (Recirc)?
  107. N54 Can I run MHD on Stage 0 or Stage 1?
  108. Which manual trans on '09-'10 335i?
  109. Bump Stops installed Backwards?
  110. N54 Hesitant Power - Unpredictable throttle
  111. Accelerating Turbo Wear
  112. Can someone please take a look at my datalog?
  113. Occasional 30FF after fender bender
  114. Oil catch can necessary?
  115. VRSF STREET VS VANGUARD V2 N54 335i
  116. N54 Water Pump Help
  117. Aftermarket inlets w/o outlets?
  118. I Hosed My Electronics, HELPPPP Please
  119. External PCV/Flapper Delete Question
  120. Dynomax Race Bullet muffler
  121. Use manual trans mounts for automatic?
  122. Post Cat Oxygen Sensors plug in orientation
  123. K+Dcan issues
  124. To what extent oil in intercooler is normal?
  125. My Turbo Lag Issues - I Think This Is The Problem
  126. JB4 Overboosting Issue
  127. SOLVED: Boost Codes 3100, 2ABC: VRSF CP, Tial, stock intake
  128. Cylinder 3 misfire, runs rough. Bad injector? Need help.
  129. Does a turbo job really needs to have the subframe dropped?
  130. Where does this wire go? N54 Jb4 G5
  131. DTC 2D2E and 2ABD after COBB Stg1 tune
  132. 29D2
  133. Mhd question
  134. "Spacer" between clutch slave line and fuel line (PIC)
  135. Limp mode n54 wierd leak
  136. Dinan Shifter Slop
  137. Slight rattle and vibration in wheel when ac is on
  138. Mystery Lean code and misfire help
  139. Any easy ways to identify whats causing a misfire?
  140. can somebody check out my MHD log
  141. Ofhg but not ofhg leak
  142. Semi-rough idling
  143. 600whp turbo recommendations
  144. Vanos readings/MHD Log
  145. Turbo install kits
  146. Stuttering on acceleration...again
  147. Single turbo which spring to choose for wastegates
  148. Does the oil cooler get filtered oil?
  149. Correcting 9.5:1 back to stock CR.
  150. Found My Tragic Oil Leak 1 Year Later
  151. Transmission malfunction
  152. Downpipe Flanges
  153. my car no longer drives (manual trans)
  154. Remanufactured index 12 injectors
  155. Alternator Question
  156. BMW 335i constant misfire under heavy load?
  157. Oil leaks
  158. Car isn't fast !
  159. Datazip log
  160. Chirping noise coming from underneath the car...
  161. Pully Noise
  162. Low oil after recent oil change n54
  163. Jerking/misfire during startup
  164. Bov o ring
  165. 30FF after a round of maintenance/mods
  166. The 2020 saga of my 2008 E93/N54
  167. Shredded belt need some input
  168. Rough start on 08 335i e90
  169. Alright whats the deal with dialetric grease on plugs?
  170. Multiple Cylinder Misfires
  171. 2C3A CODE
  172. Advice on JB4 Kit
  173. Winter Driving?
  174. What could be causing this rough start?
  175. N54 head stud kit
  176. MHD Fails to write stock
  177. Does MHD have the same "anti-theft" properties that JB4 has?
  178. Not hitting target boost, acceleration rattle
  179. MSD81 replacement, what else should be replaced?
  180. 5 stepped vrsf or 7.5 vrsf
  181. Oil
  182. MHD rattle fix?
  183. Mhd won't connect to the ecu
  184. Rbturbo or Vargas
  185. Belt issue
  186. Low Pressure Fuel Pump + Housing Replacement question
  187. Misfires at WOT Bimmerlife and N20 Plugs
  188. Main Bearings Limits?
  189. Easiest Way to Measure Boost?
  190. Error Codes 29E0 (Fuel mixture) and 29CF (misfire)
  191. TURBOS
  192. LTFT & STFT off, superknock 30f2 misfires
  193. Possible oil pan leak?
  194. No Power -- MSD81 Water Damage -- Help Please
  195. Mhd read my log
  196. 335xi vibrations while driving
  197. Oil cooler retro fit
  198. Walnut blasting question
  199. N54, Where to buy all 4 02 sensors?
  200. Car Freaked out on V7.1
  201. Single Turbo LAMBDA Problems
  202. GruppeM Intake Experience
  203. Oil leak HELP!
  204. Injectors needing coding?
  205. Lightweight flywheels and perf clutches.
  206. Paddle Shifters Not Working PLS HELP
  207. ETA: FIXED. New motor, wont start; Inpa Error #100 Sys-0010 Initialization Error
  208. 2008 335i Low Boost no 30ff
  209. Log Check Please
  210. Need to smog my car but monitors won't fully reset
  211. Recommended flywheel and clutch.
  212. Engine knock???
  213. New turbos, limp mode PLS HELP
  214. 6-Speed Auto wont move! Sealing sleeve cracked
  215. Updated N54 Turbo options
  216. What's leaking now
  217. Think I broke something....
  218. Built block - crankshaft balancing?
  219. N54 Engine Accessories For Sale
  220. Misfire cyl #5 and oil around same spark plug
  221. More bs error codes
  222. Cheapest place for spec flywheel
  223. Log Data / Troubleshooting RPM Surging
  224. Part numbers for thermostaft electrical connection?
  225. Washing/cleaning engine and engine bay?
  226. Triple checking to cover my a$$
  227. Vacuum lines
  228. Oil Leak
  229. I've never seen so many codes before... PLEASE HELP
  230. N54 Single Turbo Overboosting (2ABC & 3100)
  231. Need advice on modding my 335is with DCT.
  232. First time tuner
  233. *NEW* Injen X-Pedal Pro Black Now Available!
  234. Rebuilt motor just died, it will start but dies soon after starting.
  235. Motiv flex fuel installed, now immediate low idle on cold starts.
  236. Waiting on DME monitors to reset but it's been 2 months
  237. Gas tank only fills half way
  238. Injector and turbo questions
  239. Changing out transmission HELP
  240. Which exhaust to get?
  241. DataLog check
  242. 335XI engine swap tips?
  243. Do I need to get a new TMAP sensor?
  244. Rear differential locking ring
  245. Running E50 fuel mix with an E40 tune....any issues?
  246. Solved
  247. 2F30: Charge-air temperature sensor
  248. dreaded engine malfunction light
  249. 335xi quad exhaust for M3 rep rear bumper.
  250. PURE 600s question