Homemade air duct (with pics)

[an-D]

Jet Spec

 

[craig_stato]

this is great, im doing mine tomorrow. i love diy"s
i think im gonna go for the twin pipes, with rectangular mouths,:yeah:

 

[Bluewildangel]

Here's my attempt
I definately felt a difference when planting it 3-4 grand is much better now
all up cost was $28 from bunnings

 

[bradvt98]

what size pipe did everyone use? i just went and brought some 75mm stuff for mine

 

[calais_304]

hmm looks tempting has anyone tried doing it to a 5L yet? ..runs off to check engine bay for room...

 

[blaze]

used 75mm .

 

[craig_stato]

i used 90 mm piping, but if i could turn back time, i prob would have use 75mm as there is limited room to work with.:unsure:

 

[bradvt98]

yeah that's good i went to bunnings an all they had was 60mm pipe and that was to small so i went somewere else and got 75mm and i thought i'll go back to bunnings for the joins and stuff and they had not one single thing in 75mm so i'll have to go tho the other place in the morning

 

[ProphetVX]

i asked some guy and he said the more air you use the more fuel you will use, so they both cancel each other out. is this true?

Your car won't use more air... Your throttle body controls how much air your engine takes in.

What this does is provide your engine with cooler air opposed to over the the radiator type intakes. Cooler air temperature is picked up by your oxy sensors and because cool air is denser than hot air, your car injects less fuel to get the same amount of power.

This can save you fuel and generally gives you better throttle response.

 

[nick_20]

the oxy sensor measures exhaust gases and temps, and yes cold air is denser t but the benifit is that more air is going into the cylinder, this is called volumetric efficiency