Wideband reading help

[Vdubzr32]

I just installed FPR and set the fuel pressure at 43psi. I also recalibrated my innovate wideband.

Now at idle the reads 17.5. At like 2500 to 3000rpms the wideband reads 10.1. At WOT it reads 9.1

I don't understand what's the problem. No boost leaks n it runs strong when I tested it but I don't want to keep driving it with richness.

Not sure if it hurts the car.
Also the car has yellow top injectors 550cc. Could that be the problem? Sould I go back to the oem Injectors?

Any help ### thanks

 

[undefined0000]

I just installed FPR and set the fuel pressure at 43psi. I also recalibrated my innovate wideband.

Now at idle the reads 17.5. At like 2500 to 3000rpms the wideband reads 10.1. At WOT it reads 9.1

I don't understand what's the problem. No boost leaks n it runs strong when I tested it but I don't want to keep driving it with richness.

Not sure if it hurts the car.
Also the car has yellow top injectors 550cc. Could that be the problem? Sould I go back to the oem Injectors?

Any help ### thanks

If you just slapped on larger injectors without a way to manage them it will make you run super rich at stock boost, how much PSI are you running and running rich has no consequences other than apparently it will eventually wash out the rings and spark plugs .

 

[gixxer6]

Do you have DSM link installed? SAFC?

 

[RussianMax]

You could also re-calibrate it. Mine started working fine after I took out the O2 sensor and put it back in.

 

[josh408]

You'll need something to tune those injectors.

 

[Vdubzr32]

Ok I'm running 18psi on a 16g I do have link but not installed.

So the best idea is to install the stock injectors back in n wait till I install link.

Even though the injectors that I have are oem for the Jdm 4g63 motor it will still need the right ecu to run properly.

 

[undefined0000]

Ok I'm running 18psi on a 16g I do have link but not installed.

So the best idea is to install the stock injectors back in n wait till I install link.

Even though the injectors that I have are oem for the Jdm 4g63 motor it will still need the right ecu to run properly.

Very good, assuming that the injectors have 43psi behind them, they are flowing 166% more than the ECU is expecting.

 

[Vdubzr32]

Very good, assuming that the injectors have 43psi behind them, they are flowing 166% more than the ECU is expecting.

How did u get the percentage of 166% just curious on the mathatical equation. That lead to that. Thanks

 

[WES_393]

550cc injectors are 22% larger than 450cc.

550/450-1=.22 or 22%

 

[undefined0000]

How did u get the percentage of 166% just curious on the mathatical equation. That lead to that. Thanks

God my typing is just absolutely terrible recently. 122%, sorry .

550cc injectors are 22% larger than 450cc.

550/450-1=.22 or 22%

Thanks WES , new keyboard, not drunk yet, I promise

 

[Vdubzr32]

Ok cool I got thanks for the help guys I'll change it back to stock injectors ahnd will update

 

[Boostdriven]

Not saying that anyone is wrong but I just wanted to add something. If you think about it, 550cc injectors will only flow about 18% more fuel over the stock 450s and here is why. If you were to take 450cc and 550cc injectors and run each injector for 1 minute 100% open in to 2 separate containers you will get 450cc of fuel in one container and 550cc of fuel in the other. Now you have a difference of 100cc between the 2 containers. Yes 100cc out if 450cc is 22% but it doesn't work like that. The ECU does not calculate how much more fuel its putting in over 450cc injectors out of the 450cc, it calculates how much fuel its putting in with a given size of injectors (550cc in this case) minus 450cc, in another words 550-450 = 100, 100/550=.1818x100%= 18.18 so roughly 18% more fuel, or 450/550-1 = -.1818x100%=-18.18% so in the end you only have 18% more fuel in the 550cc container over 450cc container. You have to keep in mind that the 450cc injector values are already included in to the equation in the ECU so its the number over 450cc that the ECU will calculate out of the given size injectors. Hope this makes sense.

Here is a link to ECMlink website that shows different injectors and how much fuel to pull on each one with the ECU when you get to that point. Of course things will vary from engine to engine so some minor value differences should be expected.
baseinjectordata [ECMTuning - wiki]

 

[Vdubzr32]

Not saying that anyone is wrong but I just wanted to add something. If you think about it, 550cc injectors will only flow about 18% more fuel over the stock 450s and here is why. If you were to take 450cc and 550cc injectors and run each injector for 1 minute 100% open in to 2 separate containers you will get 450cc of fuel in one container and 550cc of fuel in the other. Now you have a difference of 100cc between the 2 containers. Yes 100cc out if 450cc is 22% but it doesn't work like that. The ECU does not calculate how much more fuel its putting in over 450cc injectors out of the 450cc, it calculates how much fuel its putting in with a given size of injectors (550cc in this case) minus 450cc, in another words 550-450 = 100, 100/550=.1818x100%= 18.18 so roughly 18% more fuel, or 450/550-1 = -.1818x100%=-18.18% so in the end you only have 18% more fuel in the 550cc container over 450cc container. You have to keep in mind that the 450cc injector values are already included in to the equation in the ECU so its the number over 450cc that the ECU will calculate out of the given size injectors. Hope this makes sense.

Here is a link to ECMlink website that shows different injectors and how much fuel to pull on each one with the ECU when you get to that point. Of course things will vary from engine to engine so some minor value differences should be expected.
baseinjectordata [ECMTuning - wiki]

Ok I get what your saying plus the ecm tuning showed how you got the equation for the percentage.

Just an update I took off the injectors and they are 510cc yellow top from a Jdm galant. I figured this out when i searched the serial numbers on the injectors.Just to correct myself sorry for the mislead info. Either way they are flowing to much and making me run rich. I haven't installed the stock ones I had to go to work on Thursday when I return from work I will install and test.


Thanks again for the help from everyone here