So I guess headers and exhaust and first on my list of mods when I get my E60. Im sure you will need a software upgrade for that kind of mod. does anyone make it yet for a car with exhaust mods. By the way are there any intake mods out yet. And whats up with that extra filter the NA cars get that the euros dont. Supposedly it gives like 10hp by removing it. Is this true and if so does removing it hurt anything and does anyone know why we have it and the euros dont

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Dinan M3

2006 X5 4.4i Sport Current Vehicle
2006 CLS 55 AMG Current Vehicle
2010 FORD F-450 King Ranch Current Vehicle
2012 GL 550 Current Vehicle

1999 M3 Dinan S3 SOLD
2001 M3 Dinan S2 SOLD
2002 M5 SOLD
2004 X5 4.4i sport SOLD
2007 335 XI Lease ended
2009 E92 M3 SOLD