bs3 fuel prob with log pics
bs3 fuel prob with log pics heres the problem,
i took these three logs yesterday and got three way diffrent results
yellow line is command afr and its 11.2:1
from left to right,
normal, except for the weird lean spike to 14:1 that lasts for like 3 ms
middle. this is where it got crazy, i wasnt looking at the wideband cause i was watching other things and the tune had been a little fat, so i thought i was fine. The leanest it reads is 15.7:1 under boost..but the car was clear and pulling just like normal
right. this was the last one i took, it seems to lean out in the upper rpm range for both gears.
i figure you can get the picture from the jpg, let me know if it will help and ill post the log files
the motor never skipped a beat and the tune was never changed at all, i tested my fuel pump for and hour and it was fine, regulator seems to be working fine
any ideas? bad sensor, fuel pump going, regulator hanging up?
its a bosch 420 in the tank with a magnafuel regulator, 76mm turbo and bone stock longblock, boost is only at 5 psi, 60 lb injectors 45 psi base pressure
i took these three logs yesterday and got three way diffrent results
yellow line is command afr and its 11.2:1
from left to right,
normal, except for the weird lean spike to 14:1 that lasts for like 3 ms
middle. this is where it got crazy, i wasnt looking at the wideband cause i was watching other things and the tune had been a little fat, so i thought i was fine. The leanest it reads is 15.7:1 under boost..but the car was clear and pulling just like normal
right. this was the last one i took, it seems to lean out in the upper rpm range for both gears.
i figure you can get the picture from the jpg, let me know if it will help and ill post the log files
the motor never skipped a beat and the tune was never changed at all, i tested my fuel pump for and hour and it was fine, regulator seems to be working fine
any ideas? bad sensor, fuel pump going, regulator hanging up?
its a bosch 420 in the tank with a magnafuel regulator, 76mm turbo and bone stock longblock, boost is only at 5 psi, 60 lb injectors 45 psi base pressure
FormerVendor
Joined: Dec 2001
Posts: 2,444
Likes: 2
From: WWW.SPEEDINC.COM
Route your wideband wiring as far away from the coils and ignition wires as possible.
I have seen non-resistor plugs interfere with the BS3 wideband as well making it show randomly maxed out lean.
I have seen non-resistor plugs interfere with the BS3 wideband as well making it show randomly maxed out lean.
