A AutoMotion Member Aug 21, 2019 5 2 13 Plainview NY Aug 31, 2019 #1 Aug 31, 2019 #1 Hello all I have a 05 Mustang 4.0 I have installed headers and cold air does it make sense to go further, she runs like a demon and there's alot more I can do but does it make sense.
Hello all I have a 05 Mustang 4.0 I have installed headers and cold air does it make sense to go further, she runs like a demon and there's alot more I can do but does it make sense.
D DerekG Member Apr 7, 2018 17 1 13 Sep 10, 2019 #2 Sep 10, 2019 #2 You should at least get a tuner with a custom tune, and if you don't have it yet dual exhaust.
