Which band EFIE

[reopheus]

Hello
I see that there is a narrowband and wideband Digital Quad EFIE how do i know which one to get for a 2009 chev silverado 6.0L gas pickup
Thanks

[formosa]

many hho out there & all of them need EFIE due to ECU but lot time end up trouble, I will suggest install the one do not need EFIE, I have 2005 silverado 4.8L installed hho with out EFIE ,pure nickel plate,no steam & no lyte get in to engine design reservior/bubbler,highway 25mpg ,need map enhancer

[timberron]

you need a narrow band

[reopheus]

thanks timberron

Hey formosa what type of a system and what was your mpg before