Trying to decide twins s475 over stock or s366 batmowheel gonna build in the future just cant decide 3400 for twins id install or 3700 for s366 installed its on an 09 lmm full egr delete with ybridge built trans and efi live. Probably stay stock fuel for a bit unless i do twins because id have enough left to retip my injectors. Tuning is and will be done by dustin@dieseladdiction