mitnworb

I want to see if I can get my 2006 S4 running like my 2004 S4. My 2004 is real responsive and peppy. I recently changed spark plugs, oil, fuel filter on both cars. I was wondering what settings should I compare to see why the 2006 might be less responsive. It runs good and smooth but noticably less pep. I want to look at settings on both to see if there is anything outstanding that could be making the difference.

jakematic

First thing to do is post a complete Auto-Scan for both vehicles so we can see any DTCs and readiness codes.

Considering you have another post about intake gaskets, vacuum leaks are a real possibility.
Checking lambdas, MAF and fuel trim is a good place to start.

mitnworb

thanks for the reply, I forgot that I posted about the vacum leaks on this forum but I have addressed that and those were on the 2004 that has the more pep.

I will run those on both of them tonight and post them. Thanks.