Lower restriction filter / cold air intake = better MPG?

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This is another topic I'm interested in, so I'm starting another thread on it. +-----------------------------------------+ | Charles Lasitter | Mailing/Shipping | | 401/728-1987 | 14 Cooke St | | cl+at+ncdm+dot+com | Pawtucket RI 02860 | +-----------------------------------------+
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Well, yes, you can. But the modifcations to the engine would be much more far reaching than a new exhaust and/or intake system.

Perhaps - but why have all that extra HP if you don't use it. ;-)

You're absolutely correct. But when you have all that HP under your foot...
Doug
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Cold air intake can help increase HP - but also uses more fuel to do it. Unless the efficiency of the engine has magically improved, you need to put more energy (gasoline) in to get more energy (HP) out. When you consider that the engine in your '05 has been finely tuned to give you the best balance of power, economy and driveability, it's hard to imagine that any aftermarket bolt-on can do it better. My 2 cents worth.
Doug
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I think you're largely correct, but it's worth bearing in mind that they are engineering the car for the needs of a mass audience and doing so at the lowest possible cost.
So in theory, at least, if you were willing to spend hundreds more on the exhause system, or the air intake system, or another wad on the suspension system, you might get a car more to your liking in terms of specific aspects of performance or handling.
If a selective investment gives me a little better fuel economy, or a little better performance at the same MPG, I'll take that as a win. At least until I win the lottery, and then I'll forget about all the tweaking, and just pop for a Beemer 550i. +-----------------------------------------+ | Charles Lasitter | Mailing/Shipping | | 401/728-1987 | 14 Cooke St | | cl+at+ncdm+dot+com | Pawtucket RI 02860 | +-----------------------------------------+
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wrote:

WRT cold air intakes,they generate a lot more noise,and auto engineers are designing for a larger market that would not tolerate the extra noise. The same goes for low restriction exhaust systems.
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Jim Yanik
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