TBI Questions

[phil]

If a car is throttle body injected what kind of fuel system upgrades can be done. I know for fuel injected cars you can get bigger injectors and carberated (sp?) cars can get bigger carbs, but what about tbi? I started looking up info on it and can't find a whole lot. Does anyone have any info on how these work?

[CT9A]

I think that they're much like a computer controlled carb. There's a single injector in the TB (I've only seen down draft ones) and it supplies fuel and air flowing through the runners of the intake manifold to the cylinders. 88-91 Civic DX's had this style. I don't know of any upgrades for them besides swapping the motor for a multi-port fuel injected motor.