Originally Posted by gordyzero
So here was the official explanation on the warranty paper, oh and here what it would have cost me had I tuned it, $4556.73 ..
" Diag. Results found P0303/P0304 cyl #3 and cyl #4 misfire. Completed compression test and leak down. Upon tear found cyl. Hones unevenly worn. Scorned top and bottom of each hone. Replaced engine block and 4 exhaust valves due to not completely sealing post assembly. "
Good for you man, I truly feel for the people that tune a stock car trying to avoid ring land failure only to have an engine fail for an issue such as yours.