Our you can simply just biuld your own intake pretty nice for about 60 80 bucks

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[SIGPIC][/SIGPIC 99 DARK BRONZEMIST METALLIC GTP SUPERCHARGED SEDAN. --MODS-- FWI, 104 plugs MSD coils and wires, 180 t-stat, dual thrush exhaust, Kenwood complete system 10' Sub ported, raised spoiler, red calis, D/S Baer rotors, Hawk Pads.

Not to blatantly fuel the fire, but I think it's kind of silly to want increased fuel economy for strictly economical reasons. Granted, we live in a society that's more or less run on petroleum. That being said, I think it's totally worth while (assuming you're able) to maximize your fuel efficiency.
Not only for saving money directly at the pump, but also for lessening the environmental impact as well as reducing dependencies on foreign (or any) oil. I think it would be awesome if one day we're all driving around in electric vehicles, or better yet, if public transportation was able to accommodate us to the degree that we no longer depended on cars to the degree we do. I live in the next city north from Portland, OR and the powers that be sound like they're looking to (finally!) extend light-rail here.

I guess the point is that if you drop x number of dollars on mods in increase your MPG, there's *more* than just the direct savings on gas to consider.

Speaking of which, I took my 06 GP on my first longer trip this last weekend, a little over 100 miles each way - unless I did my math wrong, I was only getting around 23-24 highway! Yikes! I've only had the car for two or three weeks - but I gotta figure this out. No mods yet, though.

first off also disagree that doing mods for mpg isnt worth it. i did a custom made wizzard type intake with heat shield and went from averaging 19-20 to 24-26 in t4 weeks thats paid itself off. next is the downpipe which if what people has said is correct they got another 2-3 mpg from that at current prices that takes roughly what 2 months to pay off. and you have a more fun to drive car. finally the best mod you can do for mpg and hp is the hho (hydrogen gas) mods im not talking about the bs on runonwater but a real generator and system is an easy 30% gain and 10-15%hp gain if thats not all worth it to you it was and is to me

Do you have an HHO system installed? A friend and I have been doing some research on them (he's actually building one in his machine shop). I'd be curious about any sort of setup on the 3800s.