i dont know what point the code came up. i had the car fine tuned with every part on it. all of a sudden it started messing up. im working with a 16x16 fuel map. it was perfect idle, perfect afr all over the map. it drove smooth and everything. on the long drive home is when it started messing up... like the car cannot control how much or how little fuel is being delivered.
i added fuel to +40 at the specific spot at idle and it richened up and idled better. it went to 11's afr which is too rich for idle. at +20 or so it would be leaner than 15 afr. i dont understand it. is it bad injectors?

 

If it started when you installed injectors, then maybe that's where you should start looking.

Even if you Ohm's those out and got perfect readings . That doesn't mean their poning up all the way .It's possible that one or more of the are getting stuck halfway restricting fuel flow.
I'd swap the stock ones in just so to find out if I can make the idle at perfect AFR.
Then I'd say the problem would be your injectors.

 

thats what im thinking. ive got to get ahold of my sotck ones and swap them out. it drove perfect with the injectors installed and tuned in for 3 weeks. just recently its gone haywire.

 

update, i did more trouble shooting: i took off my fuel map from the emanage. so basically it should be running the stock ecu map. it idled the same. but, when i gave it gas it was richer now... in fact, it would go into the 10's afr with higher boost(around 10 psi). so, either my ecu completely changed stock fuel maps, or one or more injector is still messing up. i think nad you may be right. if the ohms were correct the ecu wouild think the injectors are functioning properly. but the ohm could be right and it could physically be held back in some way hindering the amount of fuel being injected... im not going to boost it up any more for fear that one cylinder may be not getting the fuel, and the others are good. i dont want to F-up a cylinder. does this sound like i could be right? if the injectors, or injector is bad, i think i might need to do a compression test. i havent seen any signs of a blown or melted ring but it is possible. makes me wish i had an egt sensor after every cylinder.

 

also, i just pulled all the spark plugs... 2 were more lean looking than the others. but i am not good at diagnosing spark plugs. i know white means lean... but these are a dusty white top with a black sooty bottom. there is no sign of heat or melting so that is good. would i notice a big difference in the plug of one cylinder if the injector is messed up over one that is not?

 

found the problem! it was the injectors. i swaped the stockers back in, initialized my emanage... and walla. it drive normal. but i do notice it drives noticably richer than with the stock intectors before because i have a fuel rail and fpr set to 47psi. but, i miss having the torque. those injectors supplied great fuel for torque! well, i paid a good deal of money for 780 cc injectors, and they went bad... so im buying 880's tomorrow!

 

Good to hear you solved your problem. Does it fix the engine light too? Keep us update if the engine light come back or not.

 

yes, but i will check to see what it is. i bet the po134 and po171 codes are gone. i still will have po300 and the rear o2 thing.

 

Glad you figured it out EVOnoir.

 

how can you tell if your injectors are bad? I mean what do they look like when they're bad?