Just found this today. And $200 cheaper than unitronic.
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Autowerkes DP and Uni stage 2. Stage 2 cost me a clutch at 20k total miles. Torque is great when the CEL is not lit. Pulls nice from 2000rpm to 5000rpm! Still plagued with intermittent CEL(once every 2 days) P0420 cat efficiency below threshold and P0141 O2 sensor B1S2 heater malfunction. So far tried new O2 sensor without success. Harness is ok. O2 sensor spacers only worsened the P0401 CEL occurence but got rid of P0420. I'll try relocating the #2 sensor and install a mini cat spacer. Someone got a solution for these dtc??
Jetta GLI 2002 vr6 24v: ABD CAI, TT cams, ECS crank pulley, Gruven Parts water pump + tensioner pulley, 4bar fpr, Unitronic stage 2 with Magnaflow high flow cat and rear resonator, 034 track mounts, GC spring/Koni yellow , Autotech rear sway bar/no front, Neuspeed strut bar, TT lca/spindle, , Ecs 12.5mm spacer, Hawk HP+ with 12.3in, To come: 13.1 brakes with 4pot touareg caliper!