Hey all,
I recently went from 1-5/8" shorty headers and O/R h-pipe to BBK 1-3/4" long tubes and catted x-pipe. I've since noticed some engine detonation/pinging under load in 5th gear. The car is quieter now with the cats so there is a slight possibility that I just wasn't hearing this ping with the O/R h-pipe. The LT's do move the O2 sensors sveral inches further downstream than the shortys. Any chance the LT's are the culprit? Could I now be running leaner than before? Does running lean cause pinging?
Thanks.
I recently went from 1-5/8" shorty headers and O/R h-pipe to BBK 1-3/4" long tubes and catted x-pipe. I've since noticed some engine detonation/pinging under load in 5th gear. The car is quieter now with the cats so there is a slight possibility that I just wasn't hearing this ping with the O/R h-pipe. The LT's do move the O2 sensors sveral inches further downstream than the shortys. Any chance the LT's are the culprit? Could I now be running leaner than before? Does running lean cause pinging?
Thanks.