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derestricting

  1. BMW Tuning Forum
    Got a 523 use and looking for modifications. Read about derestricting them any ideas on this? Also do the facelift headlights and rears fit on easy? What's the best mods for the 523 engine? Cheers
  2. BMW 3 Series Forum - Technical Talk on the BMW E46
    instead of paying £70 for a superflow i was thinking of cutting the valve mecanism out and blocking the exhaust pipe to increase airflow am i likely to cause any issues i.e eml lights the recess that will be left causing airflow restrictions etc
  3. BMW 3 Series Forum - Technical Talk on the BMW E21
    i recently heard people talking about de-restricting airboxes on their bmw's. i was wondering if it was possible to de-restrict my airbox on my 316 E36 compact and if so will it make any difference?
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