I was just giving you heads up when/if you get the injectors cleaned and where to put the highest flowing one, on cylinder 4.

You can get them cleaned and flow checked through ID for around $65 and they will send you a flow chart.

 

No, WV.

Why do you ask?

 

Has the car started to run leaner out of boost too? Does it get progressively leaner as rpms go up in boost? If so id look at fuel pressure in boost. Likely a flow problem.

 

I know it's all up to your tuner but 700hp and your still using ngk8, I would consider switching to 9's. won't fix your problem but it'll take the abuse a lot better. What type dyno did your car get tuned on, maybe some load points are perfect?

 

not every injector provider flow matches the injectors. a 900 can flow 950 or 850 and they well close enough and sell them as 900's. so you buy 4 of them and get 910, 880, 850, 940 and each one is getting more or less fuel

but that wouldnt caseu the car to go from running right at the dyno to running horribly lean on the street a few days later. sometjhing else is going on. either injectors failed or some shit aint right!
[/quote]

Agreed.


These are ID 2000's though, they are supposed to be a matched set, right? All within a certain % of each other?
[/quote]
Supposed to be a matched set...i had a similair issue but worst...turned out the screen under my aeromotive pumps was clogged and the screen on top of the injectors was dirty when i had them tested 2 of 4 wasnt sparing enough to fill the glass tube
[/quote]


That is interesting. I had no problems with my ID1000's and ran them for a few years...but we will see. Who tested yours, and how much?
[/quote]
South bay injectors in nyc

 

No, not that I've seen.

When I added fuel, it seemed to take it. Last time I added a chunk of fuel, it dropped afr's.

Are you saying that because the injector is at the end of the rail?


Sent from my iPhone 5 using Tapatalk.

 

I think 8's are more than enough for this setup.


Sent from my iPhone 5 using Tapatalk.

 

8's arent always the say all be all for this motor and setup. Each motor is different, VE, BSFC, fuel type, spark intensity etc. Its been proven that the NGK8EIRX work very well, but there are other plugs that may work better for certain setups. Sometimes that heat range 9 may be needed or a resistor vs non resistor copper/iridium plug may perform better. What works for one setup may not work for the other. My $.02.

 

I agree no question in what you are saying. I just feel with the fuel type being e85, and the low comp motor, etc/etc, I am well within the range of the plugs.

 

always run a resistor plug in efi cars unless you want weird ass things happening with your electronics. bkr8eix is a great plug, works very well on everything. On e85 at lower power levels you'll need to drop down to a 7 heat range. 9 heat range plugs will foul out on a car thats driven on the street alot, they just dont stay hot enough to keep clean, so if you run a 9 you need to give it a beat down on a regular basis to clean the plugs before they foul.

The only way to know for sure what heat range you need is to read the plugs. The "right" way to read the plugs is put in fresh plugs, do a pull with as little idle time as possible, then shut it down as soon as the pull is over. If the car is rich/lean while at idle or part throttle you really cant tell anything about wot.

tuning the car with an exhaust leak will cause all sorts of funny readings. Double make sure you dont have any leaks.