Congrats !!! .... Your results were very similar to mine (
398rwhp/389tq stock #s and with ECS boost 550rwhp/510tq) on a 100% stock A8 SS so now that more of these kits are making it out its showing some nice consistency in results.
So far in its current state I have liked and enjoyed this kit (the price is right

) very fun on the street/track and I hope you do also and have good luck with it.
I am having a few things on this kit changed soon to make way for future plans and adding a few other items so we shall see how that goes .... hopefully we see the results at the track were I want them the most
-Jon
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2016 HB Camaro 1SS A8 with MRC and NPP 398rwhp/389tq stock #s(11.84 @ 117 DR only, ECS boost 550rwhp/510tq (dynapack #s) , same boost + AEM water/meth + ARH Headers/mids 600 rwhp+ (dynojet #s) TTP)10.8 @ 129.
2020 Ford Explorer
2003 SVT Cobra Coupe (just your average KB Terminator Cobra).
2013 Focus ST (e30 Tuned).
2004 Dodge 3500 Cummins Dually 6 spd manual (tow rig).
1997 Jeep Cherokee (Lifted and Locked XJ off-road rig).