Precautionary maintenance before software tune?
View Single Post
09-11-2011, 06:58 AM
Drives: 11' 135i
Join Date: May 2010
Location: Georgia (hearts still in Germany)
Drop in air filter like AFE or K&N would open the breathing a little. Not sure I'd do the plugs as well unless your tuner recommends it. Plugs will last quite a while and aren't cheap.
View Public Profile
Find More Posts by FDM68