EFI#2564 By Norm - Fri Aug 16, 2013 10:51 pm - Fri Aug 16, 2013 10:51 pm #2564 Providing you retain the header pipe with the O2 sensor does anybody know if fitting a shortie muffler will cause any problems
EFI#27532 By m1ks - Sat Aug 17, 2013 9:24 am - Sat Aug 17, 2013 9:24 am #27532 It shouldn't cause any problem at all, the sensor will measure and feed back info to let the EFI unit adjust accordingly.