O.K. Iam looking to squeeze a bit more out of my xf Ltd. Whats the answer. Do I go with a Chip, if so which one would you recommend. What would be some other alternatives

 

Talk with Anthony from TVT Designs. He'll get that limited moving pretty good

 

I have done similar reasearch and wound up going with a home made air intake and muffler. Really improved sound but did little for performance.
I am a fan of the sprintbooster, makes driving more fun.
I recently had Anthony of Tvt do a customs tune and bought a set at larger injectors from him. This has been the best go power so far.

 

performance also applies to stoping and turning.
Eibach lowering springs are a big help in the corrnering department.
Many people here have also gone with rotex gold pads if just for the sake of having nice clean wheels.
Remember to post what you learn so we all can benifit.