i have a 98 grand prix gt and i wanted to get the zzp alternator pulley but is it worth getting? because it says it frees up some hp let me know guys before i buy it thanks
these mods are always of little gain honestly. i know your a gt so its hard to find as many parts on the lower cost scale
if you did a alternator rewire and re grounded your battery i suppose it wouldnt be that noticeable on the charging system. also try the free voltage booster mod that zzp talks about.