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Sep 18, 2002 | 04:26 PM

Peg8687

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Junior Member

Joined: Aug 2002

Posts: 42

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From: Goldsboro, NC

Quick Newbie Question

TBI = Carbed?

TPI = Fuel Injected?

Yay or Nay?

Sep 18, 2002 | 04:42 PM

MrNova

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Joined: Feb 2002

Posts: 194

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From: North East, NJ

TBI stands for throttle body injection, I'm not an expert but I thought this was fuel injection. TPI stands for tuned port injection, and Im positive this is fuel injection.

Sep 18, 2002 | 05:23 PM

vortechLT1

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Joined: Aug 2002

Posts: 139

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From: kissimmee FL

Quote:

Originally posted by MrNova
TBI stands for throttle body injection, I'm not an expert but I thought this was fuel injection. TPI stands for tuned port injection, and Im positive this is fuel injection.

TBI is fuel injection throttle body injection meaning the injectors are in the throttle body

Sep 18, 2002 | 09:59 PM

D Stroy H8

Supreme Member

Joined: Jan 2002

Posts: 1,370

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From: Las Vegas, NV

Car: 1990 Iroc-Z

Engine: L98

Transmission: 700R4

Yup - TBI is the Carb's sister in fuel injection cause it sits right on top of the intake plenum - doesnt yield near as much power as TPI but it is much easier to tune so I hear.