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I'm currently looking into any and all ways I can improve throttle response and power in my Aveo. I've heard a CAI and a Muffler upgrade improve fuel economy a bit and wanted some recommendations on mufflers that are worth a damn. Additionally, any general tips on improving fuel economy. I know the simple things; reduce weight, increase power, but anything special you guys know about? Sometime down the road lighter rims would probably help with reducing unsprung weight.
Any help is appreciated.
Aerodynamic modification is a great step to improve fuel economy. Lots more info on this kind of stuff at ecomodder.com.
I recommend these two pages:
65+ efficiency mods
100+ hypermiling tips
I doubt you will see noticeable mpg gain, though there will be a slight improvement in throttle response and sound.
My throttle response increased significantly with the under-drive pulley, it further improved when the intake and exhaust were done. With all 3 changed it was a lot better than stock, but still has that same weird time delay that one has to build into ones downshifts when blipping the throttle. I always assumed this major time delay has more to do with the PID controller (or whatever control algorithm) in the fly by wire throttle. Trust me I would love to improve that delay on my '06 too, its quite annoying.
I would guess a lightweight pulley set would be the best mechanical way to improve that instantaneous throttle response if thats what you were meaning.
Etec II crankshaft underdrive pulleys - $99.99 (2004-2008)