I want to attempt a DIY intake for my 2.7L 2nd gen Taco. I have already removed the huge resonator which rests inside the fender well.
Since the stock intake is already cold air intake, I am planning on keeping the stock airbox and replacing the stock paper filter with aFe Pro Dry filter. The outlet of the stock airbox is a tad over 3". 3" is what the diameter of the after market intake is. I haven't measured the throttle body inlet, but I believe the inlet is 2.75".
So I am thinking of getting 3" aluminum pipe and few angled couplers. 3" coupler from airbox to the aluminum pipe and 3" to 2.75" coupler from aluminum pipe to throttle body.
Now the difficult thing will be figuring out the angles for the couplers and thats pretty much it. Then getting barb for the valve cover breather & fuel rail breather & drilling and tapping the aluminum pipe. Later on welding the barbs into the intake to prevent possible air leaks after the MAS sensor.
If I am not mistaken this setup should yield the same amount of gains as aftermarket intake.
It will actually be BETTER than aftermarket intake, since it will be a true CAI. Also snorkel is possible with this setup.
Benefits of this setup should be;
- larger diameter piping from airbox to throttle body
- shorter distance for the air to travel achieved by removing the 2nd resonator located above the valve cover.
- less resistance achieved by removing the harmonica coupler between the airbox and pipe with resonator
This whole setup shouldn't cost more than $100-$120 including aFe filter and should yield the same gains as aftermarket intake.