And to just re-iterate what has been told to Ben3361 in another post where he was asking about HP gains. Texas T has a documented 354 RWHP on a given Dyno (DynoJet is my guess), on a given day with a given atmospheric condition and temperature, at a given elevation. Just as you can take 2 identical stock SRT's to the same Dyno on the same day, you will likely find that the HP is different between the 2, different SRTs will produce different results with different modifications.

You can check around on the internet, and will find different variances reported, but the median that I see with the difference between the Mustang and DynoJet Dynos is about 12 to 15 percent difference, with DynoJet giving the highest reading. So, if you want more HP just make sure you get dyno'd with a DynoJet.

I do understand what you are trying to get at, but just understand that everything is just a best guess. And if you are lucky enough to live in an area where you routinely have -800 to -1000 DA's you will have much more HP than someone that routinely has 1500 to 2000 DA's. (I really hate the 100 Degree + days with 98% humidity we have most all summer long here.)

While all of our friends up north are now making preparations to put their XFires to rest for the winter, I am just now getting to the point that I can start enjoying driving it again.