More H.P. and MPG?

[jbarry]

Is there any truth to these modular add-ons claiming they boost horsepower while increasing MPG? Also, what else can I do to boost H.P. and performance without pulling a cam, dropping a supercharge into my stock '05 GT? Thanks.

[matt5112]

flow mods might net you some, namely intake and exhaust. And by exhaust I mean from the heads to the catback.... catback is fine.

[CTKGP09]

short ram intake, plog, and a 3'' dowmpipe will most likely improve your mileage by a MPG or two

[matt5112]

oh and tune would do wonders.

[jbarry]

flow mods might net you some, namely intake and exhaust. And by exhaust I mean from the heads to the catback.... catback is fine.

Thanks guys, I appreciate the response.
JB

[Bio248]

all that extra flow ability leading to better mileage will be negated by your right foot.

[RadnichGTP]

My Good friend has a gtp and with his TOGs, CAI, 2.5 inch cat back, and hes got a dhp pcm, as well as the overdrive went out in his tranny, if hes reletively nice to it he can get 35-36 mpg