|
Looks like they pulled the hard plastic hose from the top of the OEM airbox lid and got a K&N cone filter to fit the end. That will be possible if you don't intend to keep the original airbox. In my opinion, it is safer to keep the original airbox for diagnostic purposes, as you'll likely run into problems with your custom intake, during the initial trail and error work.
Modifying the intake in that way will "work", but the issue could be the MAF sensor is now too close to turbulent air. It could through off the readings of the MAF sensor - making the car run too rich or too lean, depending on the air filter choice and amount of turbulence. Likely this, along with a vacuum leak, it what caused your previous attempt to idle poorly.
Don't use PVC piping, if it gets hot enough, it will gas out toxic fumes. ABS or HDPE plastics are better and what the OEM and name brand manufactures use for their intakes.
__________________
2002 Corolla S, 1.8L 1ZZ-FE VVT-i
2003 Matrix XRS, 1.8L 2ZZ-GE, VVTL-i (RIP)
2009 Matrix XRS, 2.4L 2AZ-FE VVT-i
|