hey my friend jus installed a turbo kit onto his is300 and it ran fine for like 2 hrs and then it started to idle all weird and sputtering. we thought it was the coil packs went bad or something. has anyone came upon this problem before?? let me know so i can help him out and get it runnin and boostin away. thanks a lot

 

check the IC piping between the MAF and the engine for leaks