gota ask
Thread Starter
Joined: Mar 2010
Posts: 989
Likes: 9
From: tn.
Car: 1990 firebird,1989 Iroc z,1986 fire
Engine: 3.1lt,5.7tpi,3.1mpfi
Transmission: auto,auto
Axle/Gears: 273?277
gota ask
Injectors on the tpi set up are wired left and right sides,right?When I did an motor swap and got to looking at how the injectors were wired together.I cant see how they would be able to fire one at a time,from what I could figure the left side all fire at the same time and the right side all at once.If they fire one at a time someone please fill me in on how they know when to fire in order.I've got some injectors off a 4th gen 95 camaro that are numbered.1,3,5 and 2,4,6.Is it possible to get them out of order.
Supreme Member

Joined: Jul 2009
Posts: 2,328
Likes: 10
From: Kitchener, ON
Car: 1988 GTA
Engine: LB9
Transmission: T5
Axle/Gears: 3.45
Re: gota ask
Injectors do not have an order, they are all the same.
TPI injectors "batch fire", which means all the injectors on each bank fire at the same time, unlike sequential FI that times the shot with the opening of the intake valve.
TPI injectors "batch fire", which means all the injectors on each bank fire at the same time, unlike sequential FI that times the shot with the opening of the intake valve.
Thread Starter
Joined: Mar 2010
Posts: 989
Likes: 9
From: tn.
Car: 1990 firebird,1989 Iroc z,1986 fire
Engine: 3.1lt,5.7tpi,3.1mpfi
Transmission: auto,auto
Axle/Gears: 273?277
Re: gota ask
so my 3.1 and my 5.7 motors would be the same as my 2.8 mpfi
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