I just got my walnut blast done by these guys yesterday. I can say now that the idle is silky smooth and the throttle response is a little better. I forgot to ask them to take before and after pics but they told me mine were pretty dirty (have ~78k miles, never been done). Anyway, the guys at AutoCouture are very friendly and very easy to work with. Will definately be doing business with them in the future.
COBB - ER FMIC Full Kit - AR DPs - Forge DVs - aFe Stage 2 Sealed Intake - RB PCV upgrade - VRSF 10mm front / 15mm rear spacers - Black Performance grills - Painted reflectors