TBI truck with the large round air filter on top need a dual nozzle set up.. Single nozzle just does not work in this type of application.. Now if you have air tube with a filter on the end a single nozzle can work just not recommended... TBI systems have a few wires floating around that you do want wet with fuel....

Ricky

 

TBI->........(__)
Plate->......|..| <-spray N2o here
INTAKE->../.....\


I know its pretty crude but hopefully you can get the general idea... What i dont understand is with spraying it here why a dual would work but not a single nozzle????

 

and also, thanx for yall's help so far