2011 GT A6
Car is pulling 5 degrees of timing throughout the powerband above 3500 rpms. Thought it was my tune, so my tuner sent me a revision thinking that it could have been due to the winter blend gas. Well, even with 3 degrees of timing pulled, still doing it. I had an old tune from another tuner that I had that was never modified per my data logs, and it is doing the same thing. The A/F is pretty close to what is being commanded, but timing is being pulley in a stepped configuration from 3500 all the way to redline.
I found a leak in my intake, caused by one of the screws on the MAF getting sheared off. Drilled it out and installed a new screw and now the car is only pulling 3.5 degrees. It's getting better, but still a bit too much for me to feel warm and fuzzy.
I am looking around for other vacuum leaks, but can't seem to find a diagram online to make sure I am checking everything. A JLT intake is the only mod I have on the intake side.
One thing I am thinking is that it could possibly be related to either the PCV or brake booster connectors that are drilled in. The brake booster fastener clip (yellow) broke when I removed the factory intake, and even though I replaced the clip, the fastener has about 1/4" of axial play. It's held on to the connector by the clip, but still seems loose and if I remove the clip, it will easily slide out.
Also, the PCV connector seems to pull out of the intake fairly easily. The hose connector is very tight, and while trying to remove it the connector on the intake itself came out of the grommet very easily.
Trying to figure out how much these should actually have, and if there is any way to tighten up the connection.
Also, if I wanted to check to see what vacuum I am pulling, where is the best place to hook up a mechanical gauge?
Any help is greatly appreciated.
Car is pulling 5 degrees of timing throughout the powerband above 3500 rpms. Thought it was my tune, so my tuner sent me a revision thinking that it could have been due to the winter blend gas. Well, even with 3 degrees of timing pulled, still doing it. I had an old tune from another tuner that I had that was never modified per my data logs, and it is doing the same thing. The A/F is pretty close to what is being commanded, but timing is being pulley in a stepped configuration from 3500 all the way to redline.
I found a leak in my intake, caused by one of the screws on the MAF getting sheared off. Drilled it out and installed a new screw and now the car is only pulling 3.5 degrees. It's getting better, but still a bit too much for me to feel warm and fuzzy.
I am looking around for other vacuum leaks, but can't seem to find a diagram online to make sure I am checking everything. A JLT intake is the only mod I have on the intake side.
One thing I am thinking is that it could possibly be related to either the PCV or brake booster connectors that are drilled in. The brake booster fastener clip (yellow) broke when I removed the factory intake, and even though I replaced the clip, the fastener has about 1/4" of axial play. It's held on to the connector by the clip, but still seems loose and if I remove the clip, it will easily slide out.
Also, the PCV connector seems to pull out of the intake fairly easily. The hose connector is very tight, and while trying to remove it the connector on the intake itself came out of the grommet very easily.
Trying to figure out how much these should actually have, and if there is any way to tighten up the connection.
Also, if I wanted to check to see what vacuum I am pulling, where is the best place to hook up a mechanical gauge?
Any help is greatly appreciated.
