[Mike in texas]

Need help with deciding to spend the $ for an exhaust upgrade. With the mods in my sig how much horsepower am I losing due to the stock cats, midpipe, and tubing?

[2oo5GT]

With those heads, intake and SC, i would think a good amount. The stock cats, maybe a little HP but that stock mid pipe is restrictive. I would def see about getting an aftermarket H or K pipe.

[MUSTANGPAT93]

i would go with a catless x pipe. You will definetly notie the difference when you put it on. I believe its good for 10-12 hp on a stock combo and not sure what it would be with your mods. Keep the stock pipe for smog.
_______________________________
93 cobra
scat 331 stroker
trickflow heads
powerdyne supercharger
crane 1:6 roller rockers
trickflow 6.750 hardened pushrods
centerforce stage 2 clutch
steeda adjustable clutch cable kit
jba headers
bbk x-pipe
flomaster catback
kyb struts and shocks
short throw shifter
ford anderson motorsport programable engine managment system in the works!