All the mods in sig are up to date, almost 95k on engine, looking for something else to do... I know I can do gears or a tune, but I'm wondering if theres anything else that will actually be worth it and won't be too much on the engine. Obviously theres head/cam, and all kinds of forced induction, but I'd like to avoid those and get the best out of her I can. I'm just not sure what I could do that would be worth it without heads/cam mods like a larger TB or something which doesn't have much value without h/c mods. Thanks in advance.

 

Id say go with a MadZ28 tune