Injen CAI and fuel consumption

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Originally Posted by Hullabaloo

Does anyone know why exactly this is the case? I assume it has something to do with colder air. Do intakes like gruppeM and mugen also result in lower fuel consumption?

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hm..just spent some time thinking abt this one, and my theory is..

More efficient air intake and or Cold air = bigger compustion, more power.

more power = higher rpm.

higher rpm = hitting vtec sooner

So in conclusion, my theory is that cold air increases the combustion and spins the crankshaft faster, getting more rpm, and hence using less fuel required to get to the point of vtec.

I guess same would apply to gruppem or mugen intake, they increase intake efficiency, and get you a better combustion more rpm etc.

someone confirm?

I just put my Injen CAI on last week, very happy with the results, didn't realise how much of a difference it would make, it screams into vtec......don't really care about fuel consumption when it roars to 8.5K rpm. ECU is next!

The reason a CAI COULD offer increased fuel consumption is colder air has greater oxygen density. Creating a more "efficient" combustion process. After a while your oxy sensor and ECU will adjust the needed fuel, resulting in less fuel consumption.

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driving it around 2500 is probably killing your fuel consumption, change gear around 4000-4500 will give you close to optimum fuel consumption (city drive that is)...

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Ive found the path to less fuel consumption is driving smooothly and keeping your throttle closed as much as possible. Changing at 4000-4500 is unnecessary particulary in a 2ltr i have a 1.8 and its easily 'torquey' enough to change at 3500 or before. What leads to higher fuel consumption is throttle position and engine speed. If the throttle body isnt open then no air goes past thus resulting in your ECU delivering less fuel into the combustion chamber.

My average fuel consumption:
- Integra DC2 1.8ltr DC2 Stock Engine(resonator removed)
- Mobil Synergy 8000

Mainly City and Surburban Driving.

490-520kms (42 litres) = ~8.4ltrs/100kms

Kind Regards,
Andrew

Ordered my CAI :) You think oil plays a big part in fuel consumption?

Hrmz.... i struggle to get 450, with my INJEN CIA... Maybe its because to do lots of surburban driving...??? I don;t find a difference from when i had it stock, beside the roar i get at 3500 and i plant the accellerator.

Gotta love the Roar~!~! ^_^