I dont deny I'm biased and admit I am a big supporter of Kagantuned, as well as BMS & the JB4. However, the reason I am is because I've followed and heavily researched the top tuners & tunes available for our Stingers. Over the last 2 years I've read almost every post about them and have communicated with and/or questioned the top 5 tuners that make products for our cars. I've weighed the pros & cons of each one and so far only BMS & Kagantuned are worthy enough for promoting due to their knowledge, experience, customer service and overall superior products.
I agree that the highest numbers don't necessarily mean the best tune, and typically record numbers mean pushing the limits which usually does reduce reliability. However I know Kagantuned is testing & tuning his personally owned Stinger, and his businesses motto is "Driveability is my #1 priority". He has explained that he's aware of the limits for boost, ignition timing, AFR, LC, etc. and has set his stage 1 to maximize performance while still being conservative and reliable.
Again, I agree having a local tuner that can dyno tune your car and make the adjustments needed for fuel,
mods, etc. is ideal. I was just alerting you to tuners that arent familiar enough with our ECU and are only adjusting very few ecu tables which produces poor results and even reliability issues.
FYI- We have a reputable tuner in FL(HydraMotorsports) that tunes high performance Mclarens, Hellcats, etc. and tried to tune 2 of my friends Stingers. They promised 500hp+ but they didnt crack enough of our ECU tables so they both were slower than my other buddies JB4/Lap3 Stingers. One started having problems with his engine and the other switched to a different tune because he couldn't compete. You simply want to make sure your tuner is experienced with our cars specifically and not just guessing or changing a few ecu tables out of the 1000s that can be adjusted.