Injectors question for turbo

[Curry]

Ok I didnt post this in my turbo thread becuase I didnt want this to get mixed up and lost or whatever.

Now I have the 6 injectors from a supra 7mgte 440cc. The plan was to use 2 of them before the throttle body and use my stock injectors.

I'm using an AEM wideband Air/Fuel gauge....

Doesnt the stock O2 sensor let the car know if it should add more fuel?

If the above is true...

When I remove it to add the AEM unit the ECU will have no way of knowing if the mixture is rich or lean...

This is where an Emange or SMT would come in to play to make those changes... right??

So why would I need to use the two injectors after the throttle body? Why not just replace all the stock injectors and use the emanage to control them...

Not sure if im making any sense here lol.

If this is the case would those injectors fit my fuel rail? Would the harnesses work as well?

94 v6 LE

[Eye8Pussies]

k, I'll see if I can help out here...

personally, I'm still confused myself as to which injectors can fit directly without any modification to both the rail and harness. For sure though, the NA 2jz injectors do fit, but they probably won't be big enough for your intended application. The other supra guys should be able to help you out on this one as to what is a direct drop in for what

and yes, the stock o2 plugs tell the ecu to add fuel- but there is a definate limit to this, that is why another type of fuel management is needed as well


if you remove the stock o2 unit and replace it with the wideband, the wideband actually comes with a "dummy" signal to hook up to your ecu to give it a normal between 0-1v signal so that it won't throw a code and think that there is still a stock 02 sensor in there

and I don't see why you don't just replace the stock injectors myself. You won't need additional injectors until you go fairly far with your power



but on a side note about the 02 wideband sensor and its dummy signal. I've talked to tony about this, and the thing is that our 1mz's being hte first generation, was designed to run extremely safely by toyota (i.e. knock sensors sensitivity), and the ecu is different from the gen4 1mz's. we also don't know of any other people who have installed a wideband on a gen3 1mz while using the stock ecu, so we speculate that the dummy signal may not be adequate for the ecu and you may throw a code. With that possibility in mind, it may be easier to just get a new bung welded on to your exhaust and insstall the wideband sensor as a separate unit.

[Curry]

Thanks for the input eye8

Earlier today i went back to the turbo thread i started and i remember toys posted about the extra injectors vs. the replacement of all.

After re-reading it it make so much more sense.

so i will keep the stocks and still go with adding the two extra injectors.

But as far as the O2 goes.. if i throw the code then ill go with the extra hole/bung if not then all should be well.

EDIT:

Anyone know if the harness would fit or the harness from a 4banger 5-spd 93/94ish i think camry?? if thats the case I wont have to go looking for the 7mgte harness for these injectors.