Brake pedal not as firm like new-Advice?

[enormous]

I noticed last season that my brake pedal is not as firm as it once was in street form. Rotors and C-Max pads are A-1. I just put my girl back on the road and noticed this again and would like to address it.

Will installing SS brake lines get that firm feeling back or should I change brake fluid, or both??
What is a good street brake fluid for those in the know?
08 Shelby.

 

[SuperFly03]

May have air or wAter in the line causing softness. I'd bleed the lines a bit and see if that helps.

 

[- Aj -]

Definately stainless lines and a high quality brake fluid flush will give you a firmer pedal.

Here you go: http://www.revanracing.com/products/2007-2014-gt500-stainless-steel-braided-brake-lines.html