I was just wondering if I should upgrade to bigger injectors if I run a meth kit, my mods are in my sig minus the meth kit, evo9 20g turbo, megan turbo manifold, helix 02 housing, and forge wastegate actuator all awaitng to be installed. Please let me know how big I should go, or if stock will be ok. I was thinking of going 680, 720, or 780cc just in case I go with a bigger set up in the future.

 

meth actually lowers your duty cycle but you will need bigger injectors for the 20g. i'd go with the 720cc's at least. that's just me though. probably a tad big but i don't want to run out of fuel and realize i bought something too small.

 

680cc

 

The 680s and 720s are basically the same and will do the job, since you have alky. None of the ones you listed will be big enough for a larger turbo in the future, though, so if you want to plan for that, then get 880s.

 

thanx for the info guy's I appreciate it!!!!!!