single wideband i wont be able to log until later the cops aretoo bad during the day over here

 

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alright im convinced its the utec. i get in my car and now the a/f are 10.0 and i adjust the fuel and it doesnt change anything. so i switch maps doesnt do one thing it didnt even die when i made a dramatic change with fuel so i pull the utec and just run stock ecu and it runs fine

 

doesnt sound like you know what you are doing when you are playing with your UTEC. why not take it to a tuner, rather than tryin to blow up your motor with cylinder wash?

 

Test out injectors yet?

 

+1, the posted logs are pretty much useless without AT LEAST a/f and knock count.

 

So I thought you were running lean and now very rich? You mentioned you added some fuel so that could be the culprit. Your log doesn't have any A/F so it is basically useless. We dont even know if your A/F problem is when on boost or just cruising. Without an A/F log then we cant help you. You cant stay on 0 because you have an upgraded injector and fuel pump. Granted the ECU can scale it to a point but you might have problem at WOT.


Changing your map switch is going to be useless if all your Map are the same. Most tuner will populate all 5 Map just in case you switched them accidentally. Last thing the tuner want is you changing your map switch with no tune on it.

+1
Just go to a tuner. Never mess with your tune if you cant log your air fuel.

 

You mentioned that you are seeing lean A/F at -2 psi. I looked at your Open Loop Map threshold and it is set to 0psi. If you are leaning at -2psi then there could be a vacuum leak or your 0 column is not scaled right. At -2psi and part throttle, you are in close loop so Utec is out of the picture (somewhat). If you are running lean in close loop then check for vacuum leak and make sure your OEM 02 sensor are good. Your injector could be clogged too so I would check that too. Have you calibrated your Wideband?

 

I have tuned tons of utecs and we are located right down the street from you. Give us a call at the shop for a tune so you dont blow up your car.


Thanks, info in signature.

 

theres different maps on the car one was tuned by z fever and the other one tuned by myself. the car ran fine for months with my tune perfect a/f a little conservative but good. and then out of nowhere it goes lean then misfires now its going rich... the logs i posted had good a/f until i let off but i wasnt on it fully just to show you the spots of going lean. i tune in moderation because i dont have software to log my a/f

i changed my map to map 0 and it was still doing the same thing so thats stock ecu right? so why when i pull the stock the utec and run straight stock ecu the cars fine? its definitely the utec

 

How? When you have a bigger injectors and etc, how your car runs with straight stock ECU? Am i missing here something?

 

the same thing im missing... i know they will "learn" but thats too drastic for the injectors just got of the phone with jtinfl hes thinking it could be the front 02 sensor going to **** because when it was lean i was smelling lots of fuel

 

my car starts/runs fine on with no utec and 600cc injectors. you just cant tip into the throttle very fast.

so that doesnt prove anything.

 

Sometimes too rich will show lean. Unburnt gas will not be picked up on a wideband. Please be careful so we don't see your next thread about a built motor that you weren't ready to do.

 

Like in my case. I am seeing lean from unburnt fuel. I am doing the test this week to see if it is my UTEC. I am going to put the 0% column to "0" start it and see how it runs. Switch to the "0" map and see how it runs and then take the UTEC completely out so that its ignition and injector drivers are out of the picture and repeat the test.

As it is right now, at idle, I can add (should be subtract) fuel in the 0% column and it won't get richer than 15:1. You can even adjust the fuel pressure all the way from 30psi to 60psi and there is no air fuel difference between the two at idle. Theoretically, with my size injectors, I should be able to plug the stock ECU in and at idle I should be really rich. Something the UTEC can not appear to do on my car right now for some reason. This will at least let me determine if it is something else on the car or the UTEC.

 

nah, 600cc injectors will idle at 14.7 with no UTEC. I had to drive to FP with no UTEC when it got water in it. Drove just like stock except I couldnt tip to hard. stay under 30% tps and it was just fine.

 

^thats good to know. I thought 600injec is too big size with stock ecu. Was it drive like crap?

 

That is good to know... especially when with the UTEC I have to have +6% in the 0% column at 750rpm's just to get it to idle decent. Obviously, I am not running my car that way though because that is way to much fuel and would be really bad. Facing facts, if the the car idles for crap with the UTEC at 0% but it idles well with the stock ECU that should say something.

I have three odd colored cylinders also. Obviously something is not right and it is related to either the ignition or the injectors. Injectors have been tested and so have the coils and plugs. It is not my parameters and it is not my map. It is either a bad set of drivers in the UTEC or some crazy electrical noise going to the UTEC somehow. I am exploring both though.