graygt07

i was looking at installing the bbk long tube headers and a catted x pipe on my 07 gt. My question is will i see around 30 rwhp if i keep my stock mufflers? I want the car to stay as much of a sleeper as possible. Will the car be that much louder? I would also like to see my boost drop a little, maybe one pound?

bonestang

With a catted-x and stock mufflers you will probably only see 15-25 extra hp. It will probably be a tad louder. As far as the sleeper thing goes, the supershaker kind of gives it away

The boost drop will be because of increased efficiency, if you are worried about too much boost this doesn't really help anything. If you are making more HP, then the cylinder pressures are still increasing, even though the boost gauge says less pressure.

Hope this helps. Are you in Peoria? I see a grey Mustang with a supershaker all the time by Lowes.

graygt07

yes i am from peoria. That could be me, my stang is dark gray with a 17' center strip and 2 1' stripes in flat black. i go there a couple times a week. thanks for the info