Hi all I would like to put on my 2006 Gt Auto exhaust manifolds more 'performance and are undecided whether to put Shorty Headers or Equal Length Heades or Long Tubes Headers.
Make it better with or without catalysts?
As for the couple and horses with which I can get more '? and will act as' change Automatic Transmission with these different manifolds as I would keep the original 3.31 Gear Ratio? I think this will vary the engine speed and torque will move up or down I do not know and influencing change and its response, altresi I need to know what type of mapping me to do.
So many questions I'm sorry but I would not do damage to my Mustang