This means stock downpipes, stock exhaust, and a stock intercooler. Somewhat hard to believe as AMS has no video of the car to show and also no pictures of their upgraded turbos have been posted. Additionally, no specifications on the turbos themselves. Not that BenzBoost is doubting AMS but clearly more details are necessary here.
These upgraded turbochargers will be the main part of the AMS Alpha 9 package for the AMG M157 turbo V8 although it is unknown at this time what other supporting modifications will be included or what the pricing will be.
Regardless, congrats to AMS for the new record and it will be interesting to see the back and forth that goes on with the M157 platform with more and more upgraded turbo options coming to market.