How do performance parts effect fuel economy?

[Fredrick_NP]

Would something like SMA's Stage 3 (http://www.smahummer.com/detail.jsp?cid=11&pid=709) performance kit increase or decrease the car's MPG? I mean I realize any effect it did have would be minimal, but still im curious.

And what about SCs? It seems like any kind of forced induction would kill your fuel economy... but I dont know. I know very little about cars, and havent taken interest untill just recently.

[Fredrick_NP]

Would something like SMA's Stage 3 (http://www.smahummer.com/detail.jsp?cid=11&pid=709) performance kit increase or decrease the car's MPG? I mean I realize any effect it did have would be minimal, but still im curious.

And what about SCs? It seems like any kind of forced induction would kill your fuel economy... but I dont know. I know very little about cars, and havent taken interest untill just recently.

[VTSTOMPER]

dirty...where is your "find" .gif?


most reduce f/e

[Fredrick_NP]

"dirty...where is your "find" .gif?".... What?

[Fubar]

he's referring to the "Find" button at the top of the page. Most probably you will find your answer using it.

But to answer your questions:
The air intake yes will help but I personally don't care for the Araid it's open design lets all sorts of cr*p in. Look into the Violant (yes I know it's 3 times more costly) you get what you pay for.
http://volantperformance.com/

The headers will allow the engine to breath better but will also produce additional hp so no mpg gain there depending on how heavy your foot is. If you can manage to keep your foot out of it then yes probably you will see a couple additional mpg's.

the cat back system will make the truck sound better but will not really make a noticeable mpg change.

pcm-reprogram. this may help with mpg. again depending on how heavy your foot is. It will most likely change the shift points for the trans and perhaps the fuel curves I'm not certain exactly what all the sma program changes.

[Fredrick_NP]

Wait...what?

Someone on this site is being.....helpful? This is inconceivobish. (And thank you BTW lol.)