ls1transam346

iTrader: (1)

i was at a car show and there was a mobile dyno. i was really curious to know what my car would pull. it is a 99 trans am m6 and all i have is an air lid and filter and a flowmaster muffler not a cat-back. i pulled a 296.3 but looking at the printout of it, at 5400 rpms it drops down significantly then picks back up at 5700 rpms. the first run it dropped way down then the second run it wasn't as bad but it still did it. the first run went from 290(@5400rpm) to 255(@5570 rpm) back to around 285(@5700 rpm). the second run went from 290 to about 280 then back to 290 at the same rpm ranges. If anyone knows what happened or what may be causing this please let me know