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The next step in the exhaust-tuning process is the addition of a stainless-steel downpipe without a catalytic converter
The existing EEC approval ensures a total legality in the everyday street use
various elements such as ignition timing
Turbo downpipe with integrated high flow metallic cat (sports cat) for 1
Evolve Remap - BMW E46 M3 JCW The next step in theThis ECU remap is for installation at Evolve 2009 saw further development and something completely new for the S54 engine to allow real power gains. Many claims to 15 30hp+ have been made over the years, but nothing ever materialised. The E46 M3 S54 engine responds well to the right type of ECU software. Conventional methods of advancing the ignition timing under full load has little effect. This is what the industry has seen over the years with no
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