So, I finished the intake on my Malibu... Here's the stock one removed... I already attached the PCV breather...
You can see here where the PCV was depositing oil on the inside of the intake... I didn't photograph my TB, but it was pretty nasty... I didn't remove it, but wiped it off...
... And here's the finished(ish) intake... I cut about 3/4" off the 45* elbow to make fitment easier... All together, one 90, one 45, and one 6" straight piece... I used the clamp from the stock intake on the TB end of the intake, the 3" plastic was a slip fit on the TB anyway, and used a 3" silicone coupler on the MAF end of the intake...
And so far, no CEL! Mileage also seems to be up, but I need more data before I make any claim... However, in the past two days, I've been setting records for UG indicated mileage on both of the trips I usually make...