Exhaust ATS Doesn't Hurt Performance

[Silversurfermd]

The Apexi ATS really does decrease exhaust noise. I use it for that reason but I have always wondered how much, if at all, it affected performance. Take a look at the link. Can you find which pull was without ATS? Neither can I, except for the AFR graph (purple). Granted I don't have a lot of power running...yet.

http://www.dsmtuners.com/gallery/showimage.php?i=130343&c=506
1996 Tsi Pump Gas - Evo316G with 650 FIC running 20lbs boost. DSMtuners Gallery