3sgte recirculated, Now with PICS! Options

[jgreening]

Today Carl at Speed Source made me a new intake so I could recirculate my Greddy BOV. Here are the results:

1. No more backfires
2. No more puffs of black smoke out my tail pipe
3. No more ricey BOV sound
4. Better response after shifting

All in all, a great mod - unless you like the sound (which I don't).

Here are the pics:





This post has been edited by jgreening: Jul 15, 2006 - 2:09 PM

[jgreening]

I read the info and the link and have some questions. I also want to talk theory for a bit but I am not challenging your knowledge in this area.

We know the blowby is mostly a gas / air mixture. We also know the AFM is designed to measure how much air is coming through the intake so the proper amount of fuel can be injected. Adding the blowby back into the post AFM metered air should essentially make a "richer" (i.e. air that contains some fuel) prior to going into the engine. Why would a plugged PCV (i.e. open to atmosphere / not allowing blowby back into the intake) make you have a rich condition as the information in the link indicates?

[phattyduck]

Why would a plugged PCV (i.e. open to atmosphere / not allowing blowby back into the intake) make you have a rich condition as the information in the link indicates?

The extra air that is escaping to atmosphere has been metered by the AFM... Therefore, the car thinks there is more air in the cylinders than there actually is. Any AFM/MAF car should have a completely closed intake (including PCV). This problem dissapears on MAP based ECUs (ie, high horsepower cars, 3rd gen 3s-gte, Hondas, etc).

-Charlie