Pinging under load! 05 Xterra 209k miles


Test Drive
Milton GA
I’m having some Ping/knock under load, I run 93 with timing at -2 on my bullydog, seems to get worse when tank is lower on gas but that might be placebo, anybody have tips? I’m thinking of doing the sea foam method to get the combustion chamber cleaner, I have a p1283 code but it started to ping before I got that code. Tips would be great, it’s my daily driver and want it to run nice, if I do hard pulls, I soemtimes smell some rotten egg (clogged cat) smell, let me know what I should do, gonna fill it up later with some 93, I have some trails to hit tomorrow!