it started going away a year ago...it finally went one fine summer day....just had gotten the bottle filled up....it was WAY TOO HOT and WAYYY TOO MUCH pressure.....say a Z06 that needed a spanking and nailed it with the NOS....pulled really good....came to the light and she was missing a bit. Went to the track and ran 123.5 MPH traps like that. Checked compression.....80 PSI in #6! Still runs OK though....just dont get in it and really dont drive it much!