its a pzev, so it had the lifetime airfilter, removed and replaced it with a cheap cone filter, the noise is like if u take your filter out and floor it everywhere but 10x that loud. i dont think its a fuel issue, the pump was replaced last summer under warranty and the filter i change every 10k, i was leaning towards cat as well but i have all the shields around mine so its difficult to see. it sounds like im floored but being held back or like im slightly holding the brakes. it also has 107k on it with factory timing chain, another thought i had was maybe there is a crack in the i/m or something, im thinking about just scraping it or just parking it for now. it needs to much work right now.. body work, struts, shocks, clutch, cant lock it driver side door handle doenst work the list goes on...
2dr Mtx SES#037