Thread: Mpg
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Old 05-15-2008, 10:24 AM   #17 (permalink)
notevenclose
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Join Date: May 2008
Location: Florida
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CAI yes. Duals...prolly not.

Quote:
Originally Posted by NMTTDAVE View Post
Thanks "notevenclose" ! you sound pretty knowledgeable about this stuff. Now I just spent 30K + on this truck and don't want to put a lot more money into it, but what would a cold air intake cost, approx? And I can't take the cat. converter off, we have emmission tests here, but would Dual exhaust really help with MPG and would it be worth it?
Cold air intakes do work. The main idea here is to cool the inlet air as much as possible by drawing fresh air outside of the engine compartment. Cool air is more dense so you don't have to push the pedal as hard to get power.

Think of it this way: combustion is BASICALLY 25 parts air + 2 parts gas at like 25% throttle. Now, if you have cooler air at the same throttle, it is more dense so now you have 35 parts air. With this extra air, your computer will add fuel(to prevent lean combustion) and make you go faster at 25% throttle...so now you get the same amount of power at, say, 22% throttle with a CAI as you did before without it.
Make sense? Sorry this is kinda technical! There are tons of CAI out there! You're gonna want the one that has the best filter and gathers the coolest air. Until someone does a definitive study USING THE TUNDRA, we may never know which one is best.

Duals wouldn't help enough to offset the cost. Plus, you're gonna have your foot in it so you can hear it!
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