Here is the problem i am having. i installed fp red, ets 4" intercooler, fic 850 cc injectors, prosport gauges and now whenever i drive around i am getting a p0134 no1 o2 sensor no activity. i am currently on my third o2 sensor thinking that it was the o2 sensor but it cant be. trying to get the car tuned, the fuel trim will not move. the low fuel trim moves but the mid and high will not move. it tries to take and put it but nothing changes. i was thinking maybe my fuel injectors being a differnet impedance but i hear the evos run a high impedance box and the fic are supposed to be low impedance if thats correct? the car is hard to take off in first and everytime i shift my a/f goes from around 14.7 down to the 10 area. we cannot get these injectors scaled. please any help or ideas would be appreciated.

 

have you replaced your sensor with a factory sensor?

I have seen alot of cars with universal o2 sensors that cause no activity codes.

 

the first sensor i had was a ntk sensor that worked before changes but not after so i changed to a universal worked for like a day then same thing happened and now i am on a oem sensor and still same problem

 

What you need is a service manual and look up the diagnostic procedure for the P0134 fault code. You'll need a multimeter that reads volts and ohms because its going to ask you to measure the resistance and volts in some of the circuits. Diagnose then repair, always in that order.

 

You might be able to find it here for the code.... https://www.evolutionm.net/forums/ev...es-obd-ii.html

 

i have been looking in my manual and still havent come across anything. is there anyway maybe my ecu fuse the big one in the engine bay may be bad? or even worse the whole computer. if that was the case how would that have happened.

 

FIC makes both high and low impedence injectors. Make sure you have the right ones.

 

called company i purchased injectors from to verify if they were low or high and they are low so i am still stuck. i didnt not play around with wiring or anything. simply unpluged swapped and plugged back in. only thing i am thinking now is either 1. huge boost leak 2. bad ecu fuse 3. bad ecu? my code wont really pop up untill i have been driving on the highway for a few min at around a constant speed of 70mph. through the streets it will take a while for code to pop. is the red supposed to sound completly different. as im driving if i give just a little boost, not even that much maybe 1 pound if that, all i hear is sucking. could that be a boost leak or is the red that much different than stock

 

What are you entering for injector scaling and what latencies?
What kind of changes have been made to the fuel map?
Any damage to the MAF sensor?
Any exhaust leaks at the manifold or turbine housing?

 

Did you possibly damage the chassis side of O2 wiring when swapping the turbo?
I'd look for damaged pins or cut wires.

 

well i figured it out. problem was that on my injen piping on the uicp the little coupler was barely on the pipes which was leaking air out. that is why my car was running so rich. now as far as the fuel trims, i had some peripheal bit " purr-rif-eal" how ever you spell it. enabled it and fuel trims started working. fp red ftw