st 204 turbo Options

[thorshammer]

Hi I have a st204 Celica with 5fse engine and am wanting o turbo it. I have read 1bwilson's and Shid's posts on turboing a 5sfe and list of components needed and this seems to be the best way to go. In my neck of the woods CT26 turbos are hard to come by, T3/T4 turbo is easier to sourc.e My question is what T3/T4 do I need and other than a CT26-T3/T4 adaptor is there anything else I need. I live in Australia so Mustangs and other American cars are not common here but plenty of Japanese sources. Thanks

[Syaoran]

If you insist on 460cc injectors, then get these instead: Miata 440cc Injectors

They've also got the same plug.

[thorshammer]

If you insist on 460cc injectors, then get these instead: Miata 440cc Injectors

They've also got the same plug.

Im just going with what is suggested, personally I thought 460 was a little to big for what I needed. This seems like a better deal cause I would have had to have the others serviced as well and here that costs about $30 per unit

[Syaoran]

If you insist on 460cc injectors, then get these instead: Miata 440cc Injectors

They've also got the same plug.

Im just going with what is suggested, personally I thought 460 was a little to big for what I needed. This seems like a better deal cause I would have had to have the others serviced as well and here that costs about $30 per unit

The only reason why 460cc are suggested is because most people who turbocharged the 5S... scratch that, EVERYONE who turbocharged the 5S in the past went with a piggyback. They all can only scale the injectors so much, that if you were to get bigger than 460cc it would be a little difficult to tune the off-boost part of the map.

With a megasquirt, you input your injector size and you can scale them to whatever pulse width you prefer. Technically it'll behave like a stock car off-boost (leaner than stock, if you want, to save a lot of fuel), and it'll dump in the necessary fuel when on boost.

I personally recommend you get the 550cc and wait until the Megasquirt is installed. I'd rather run a large injector at 50% duty cycle than an injector that is just enough at 90% duty cycle.