i have a built d16z6 my buddy let me borrow his precision 1000cc injectors to see if i can get it to idle b4 i buy them.

y8 intake manifold- no iacv
dual cam throttle body
and s300...used to have rc440 and idled perfect

i tried makin it idle at about 1000 it is very lean and i cant do anything to make it rich i crank the fuel way up and it doesnt get rich and now it stalls sometimes. it would idle and bounce from 750 to 900 about but very lean and sounded like it had a cam what should i do? thankk in advance very much

 

i use the same injectors and idle great with ectune. try to richen it up, to around 13:1 AFR at idle, it should be just fine

 

Make sure your injector offsets are setup for the injectors.
Make sure you are running a resistor box as precision 1000cc injectors are low impedance.

 

i have a resistor box installed, im gonna call tomorrow to get the dead times you dont think it could be from no iacv?

 

You should be able to disable the iacv & set mechanical idle (throttle body stopper) up so the car will idle.

I would run an iacv if you can....

 

ok would a 17:1 afr at idle be bad its not really under load

 

It's not going to damage anything. You should definitely richen it up.

 

No, but it will most likely idle like ****. If thats how lean its been idling then thats your problem.

 

Set it to openloop, then go to the Overall Fuel Trim under Parameter tab... I set it to 25% going from stock 240cc to 550cc, so i guess for 1000cc injector, you could try setting that to ~40% +/- 5%.

It was idling rough when i did the switch, took me 3 days to figure out that was the thing to change. Now it idle smooth like stock.