How much do headers improve straight line performance?
I've read that they'll get a TL-S type down to 5.5 secs for 0-60 mph! That's remarkable if true. Basically this is based on the CL-S which should be identical in speed to the TL-S.
Anyway, are the expensive to install and do they void a warranty?
Thanks.

 

You must have heard it from a psychic. Since the stock 0-60 numbers aren't official yet. According to Car & Driver, the 0-60 will be around 6.9. There's no way that just headers will bring it down anything more than a few tenths of a second if that.

Jason