After chiped my car for a month, I started to feel the power is not as first week while I chiped my car. It's kinda between stock and chip mode. So, no CEL, I only can guess my DV is out (cuz I didn't upgrade it yet). Can anyone tell me the symptom is and how to determine I blew my DV w/o taking it off?

TIA

03 A4 1.8T Quattro M-5spd w/ Ming Blue pearl

APR Stage I+ / EuroCode FMIC / Genesis 380cc Injectors / Neuspeed SS / APR Snub Mount / Sport Suspension / oem RS4 sway bar / DV 710N / Remote Window / Auto Lock / RNS-E

SoCal Indi Shop

MB the Body dancing!