4.6andSlicks New Member Aug 22, 2006 171 1 0 Central Connecticut Jun 14, 2009 #1 Jun 14, 2009 #1 If I choose to use the stock tune for my 4.6, can I mod it or does it have to have the performance tune installed ? If yes, how's it done?
If I choose to use the stock tune for my 4.6, can I mod it or does it have to have the performance tune installed ? If yes, how's it done?