VG swap air intake options
Posted: 06 Dec 2015 09:29
Got the VG30 mounted and in the 510. I have been working on plumbing, exhaust, wiring, etc. One of the items that I'm not sure of or undecided upon is the configuration of the air intake, filter, and MAF prior to the throttle body. I would like to use the stock MAF which has a OD of 3 1/8" on both ends. The intake which is from a 200sx has the z31 throttle body on it(same diameter as the 200sx) has a diameter of 2 3/4". Most of the aftermarket air intake pieces and parts that I find from suppliers are sized for 3", 3 1/2",, 4" etc. I have seen various pictures of VG30 install using the 200sx intake, but have no idea what is done to get around the sizing issues.
The other challenge is that I will need to provide air supply for the PCV system and the idle air control valve. Spectre makes/supplies fittings so that you can drill a hole in the intake tube to accomplish this, but I haven't found other sources.
What filter media is preferred for this application as there seem to be many options?
Lastly I have read a few threads that claim decreased performance from the aftermarket air intakes. I know that they are louder due to no factory baffling, but not sure about the performance issues and what could be done about it given that the engine swap almost requires this form of air intake.
Thanks as always for your input.
Chip
The other challenge is that I will need to provide air supply for the PCV system and the idle air control valve. Spectre makes/supplies fittings so that you can drill a hole in the intake tube to accomplish this, but I haven't found other sources.
What filter media is preferred for this application as there seem to be many options?
Lastly I have read a few threads that claim decreased performance from the aftermarket air intakes. I know that they are louder due to no factory baffling, but not sure about the performance issues and what could be done about it given that the engine swap almost requires this form of air intake.
Thanks as always for your input.
Chip