Fuel Injection

[superwaxer]

Hey folks,

I race with a 1600 SOHC 16v Mazda 323. Its close to stock standard apart from some head work and so on. I initially thought it was a carburetted model but apparently, I was wrong. Apparently its running a fuel injected carburettor. Yes a fuel injected carburettor of some sorts. It looks just like a carburettor but it uses fuel injection. So my question for you folks is: Is there a huge difference between fuel injection and electronic fuel injection AND if I would like to do a 1500 DOHC transplant in the future will it be easy to crossover from this type of injection to the multiport/multi-injector system?

Here's a pic of the so-called "fuel ijected carburettor":



Thanks.

[Saturna]

Here is what you are referring to...

http://en.wikipedia.org/wiki/Throttle_body

Fuel injection can be mechanical, like early Corvettes used. Modern F.I. is not only electronic, but also 'multi-port'.

As far as converting to MPI, I would just use whatever came with your motor, or comes with your new motor, unless cost isn't an issue.



Jay

[MATT91GT]

thats a TBI unit. Throttle Body Injection.

[superwaxer]

Interesting thank you. Can I get a larger replacement? If not, how can I improve its performance?

[MazdaNoob]

yes it is a TBI unit and is computer controlled hence efi as well ... tbh there really isnt much you can do with it afaik other than chipping the ecu

[superwaxer]

yes it is a TBI unit and is computer controlled hence efi as well ... tbh there really isnt much you can do with it afaik other than chipping the ecu

That souds good enough thank you. Any idea how I can go about doing such a thing?

[steve]

wow, another kiwi hiding here .. i don't know anyone up north here that does chips for these ones, you're prob better off/almost cheaper just getting a standard 1600/1800 injected from pick-a-part or grad a cheap wreck from trademe - at least that way you can get the full loom and everything if its a runner..