I think it's fun to keep mod'ing the XFIREX and waiting for some breakthrough in power engineering. Either you have the SRT-6 you still want more 'cause you're still not the fastest car around

Right now, I believe that my XFIREX has around 250 horses with the ECU upgrade, K&N filters and MagnaFlow muffler. That's what I believe for now and I'm happy with it. So far, not one has beat me on the 0-60 in the stoplight.