Not for the LBZ, just the LLY, LB7 Diablos did that.
They are sending me new a code blocker to try out though with my LBZ
In the meantime I bought the Edge Evolution and will compare the 2.
My mileage has gone down with no explanation except the Diablo upgrade. I can see the Turbo pressure has gone up some but I drive easy!
Still need to put the MH pan on but haven't bought any fluid yet, plus I have transgo jr kit to do at the same time!
FB
2006 GMC D/A C/C S/B, Snug Top Shell, Bed-slider
33 inch Toyos, 17/8 Pro Comp Wheels, 4 in SS MBRP Exhaust-Turbo back, Evolution Tune, Mag-Hytec on Rear and Trans, Tranco Jr Shift Kit.