avo install wtf am i missing here

[tjcool]

wondering what i am missing here on the intake obviously there is something that is supposed to be bolted on here ?
another vaccum line ?

its the under side of the intake on the avo kit im putting on



thanks again everyone i appreciate the help

[Fatty]

that is where the 5th injector goes on the stage 1 avo kit.

if you're not using the 5th injector, and instead are just upsizing injectors, then just make a blanking plate to block the hole. that's what i did, worked a treat.

[tjcool]

are you serious a 5th injector ?

[Fatty]

the stage 1 kit uses the standard injectors, augmented by the 5th injector which is controlled by a little piggyback ecu and just sprays fuel into the intake there. it sounds a bit dodgy but apparently it works ok on low boost set ups.

the stage 2 kit does away with the 5th injector and uses 4 bigger injectors to replace the standard ones. this is the better way to do it.

you need to do one or the other, the standard injectors aren't big enough on their own. or the other option is a rising rate fuel pressure regulator, but again i don't reckon that is as good as fitting bigger injectors.

[tjcool]

thanks fatty i do have bigger ones i fitted yesterday
the 5th one sounds so bodgy thats all i thought you were makin it up

once again
thankyou

[Sean]

Fatty is telling it how it is.
The 5th injector is a cheap and reasonably effective way to add fuel on basic, low boost set-ups. It's also the setup that AVO used to get the kit pre-approved with most australian authorities.