EagleTalonTim
15+ Year Contributor
- 833
- 13
- Jan 10, 2007
-
Brighton,
Tennessee
I have been battling with my fuel trims since I got this car. Here is my set up :
93 Eagle Talon A/T
Manual Shift Box
JDM 4G63T
Stock SMIC
Stock IC piping
Stock Fuel pump rewired
Evo III 16g
450 Injectors
M/T ECU to run the 450 injectors
SAFC2
Datalogger with MMCD
First off, I just installed a brand new O2 sensor today and I still cannot get it to read over .85v at WOT. I replaced the old one because I could not get it to go over .83v at WOT. It did not help at all. My fuel trims are outrageously high.
Low : 139%
Mid : 106%
High : 130%
Fisrt, I turned my SAFC up to +15% at 1000 RPM to try and get my FT02 to around 100%. The best I could get was 103%. I am worried about adding more fuel because my gas mileage already sucks. I then reset the fuel trims and zeroed everything out to see what would happen and 1 hour later, the fuel trims were back over 120% again. After changing the SAFC to +18% @ 1000 RPM and reset the ECU again, the fuel trims started going back up yet again. What is going on? The M/T ECU is supposed to be programmed for 450 injectors. I stay out of boost most of the time to keep the gas mileage as best as possible. I have set the AFPR to 48psi at idle with the vacuum line disconnected hoping to drop the fuel trims more. Nothing has worked so far. I pulled the ECU out of the car and checked for leaking caps and there was no problems at all on the board. I really need help getting this thing running right. Any input would greatly be appreciated. I am tired of buying parts for this car to hope it fixes something I can't quite get right.
93 Eagle Talon A/T
Manual Shift Box
JDM 4G63T
Stock SMIC
Stock IC piping
Stock Fuel pump rewired
Evo III 16g
450 Injectors
M/T ECU to run the 450 injectors
SAFC2
Datalogger with MMCD
First off, I just installed a brand new O2 sensor today and I still cannot get it to read over .85v at WOT. I replaced the old one because I could not get it to go over .83v at WOT. It did not help at all. My fuel trims are outrageously high.
Low : 139%
Mid : 106%
High : 130%
Fisrt, I turned my SAFC up to +15% at 1000 RPM to try and get my FT02 to around 100%. The best I could get was 103%. I am worried about adding more fuel because my gas mileage already sucks. I then reset the fuel trims and zeroed everything out to see what would happen and 1 hour later, the fuel trims were back over 120% again. After changing the SAFC to +18% @ 1000 RPM and reset the ECU again, the fuel trims started going back up yet again. What is going on? The M/T ECU is supposed to be programmed for 450 injectors. I stay out of boost most of the time to keep the gas mileage as best as possible. I have set the AFPR to 48psi at idle with the vacuum line disconnected hoping to drop the fuel trims more. Nothing has worked so far. I pulled the ECU out of the car and checked for leaking caps and there was no problems at all on the board. I really need help getting this thing running right. Any input would greatly be appreciated. I am tired of buying parts for this car to hope it fixes something I can't quite get right.