TPI Tuned Port Injection discussion and questions. LB9 and L98 tech, porting, tuning, and bolt-on aftermarket products.
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Old Oct 11, 2011 | 09:29 PM
  #1  
Bobby Suth's Avatar
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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.
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Old Oct 11, 2011 | 09:37 PM
  #2  
eseibel67's Avatar
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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.
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Old Oct 11, 2011 | 09:47 PM
  #3  
Bobby Suth's Avatar
Thread Starter
Senior Member
15 Year Member
iTrader: (2)
 
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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