Originally Posted by Diemaster
thats very intrasting. *** soon as i get the MPFI working propaly and get a baseMPG i'll try that
Wait a little while. I am going to post another write up that is a bit more modern, and you don't need to use BBs, coffee and V8 cans to get it to work.
The theory behind it is that it's good for the engine in the long run. If your car has a lot of pressure in the head (as do turbo) it will relieve the pressure by sending the gases through the PCV and back into the intake manifold. Sometimes, especially in engines with higher miles, the fumes sent to the intake have oil vapors in them. This can eventually cause your throttle body to be all dirty, which can in turn affect your injectors, etc.
This little contraption (which you can actually make for around $15 from parts at Lowes/Home Depot) will capture the oil and prevent it from fouling up your throttle body.
Apparently with Hondas the short term effect is almost non-existance. HOnda engines are tuned to perfection. In the long term, however, it will help keep your engine clean and happy. Clean engine means better MPG as well.