nj1266

iTrader: (6)

To Those who have installed a GM 3-port: Did you VTA the 3rd port or did you connect it to the intake pipe?

I know that the GruppeS 3-port instructions say to connect the 3rd port to the intake.

The GM 3-port does not come with instructions. So which way is better, VTA or connect to intake pipe?

MR Turco

iTrader: (16)

it is not enough air to hurt the motor. It is up to you. I vent it back into the intake because i have the nipple on my intake. Otherwise i wouldn't. I have seen 3-ports actually come with a little foam tip on the 3rd nipple to act as a tiny filter.

ohhgyeahfasho

iTrader: (14)

Hey Naji,
I asked Bryan via PM about it after we worked on my car..

GST Motorsports

iTrader: (8)

If you still have the option of venting it back in, I would. It is metered air, a small amount, but still metered so why not.

WRC-LVR

iTrader: (1)

I tested this on my car and found VTA ran a little richer, and a little richer spooling up after drop throttle in tuning logs. Acts like VTA BOV but much less so. You might spike a bit more so be aware of that if going from VTA to recirc'd.

So I concur with Brian.

Anyways that is like a boost leak, so you dont want that from that standpoint.

Milburn

racer135

iTrader: (2)

I recycle back in. Just remove the foam filter on the GM 3 Port

Evo_Jay

iTrader: (17)

+1

Plus you could have read my how-to, where I said it should be connected, if possible.