ok i have a 98 ls1 and i **** go upgrade my ignition more but i dont know what kind of box would work does anyone know witch msd box would work

 

those things are a real pain in the butt. they push those alot, but in truth your stock ignition can handle quite a bit. even your stock coils and wires are good for lots of power, and you wont see ANY gains out of doing this until you have done a good deal of other work. I personally tried the 6ls ignition box with the EFI harness, and i couldnt get it to work at all, so i sent it back.

what mods do u currently have?

 

i have a loudmouth 1 catback long tube headers hi flow y pipe no cats and an air lid

 

Untill you are making over 500 rwhp or have a turbo or blower (even then I would keep the stockers) KEEP THE STOCK PARTS. People are just waisting money and fooling themselves into theinking they have "a new power mod" with this stuff.

 

ok thats good to know thanks