Correct no P0171 and 0174.... and exactly on the non foulers. Just have to worry about the slow response lol....any ideas?
lol, you don't need to go down a grade. If you're doing some slightly aggressive driving and just get off the freeway with some braking it's going to do that. Feels just like a jake brake. PCM Deceleration Mode
no... I forgot. Same possible causes but a lot shorter list. 02 Sensor wasn't listed as a cause for the P0171 and P0174 right? So you got a really short list now... I wouldn't fixate on Exhaust Leak if you're pretty confident about that. With that blower in partial throttle boost things are not what the PCM is so much calibrated for. You know, I'm a little surprised that adding fuel got rid of the P0171 and P0174. Reason is this: When you add fuel with the predator you're only adjusting the fuel add in the PE table -- that's the fixed (per cell) amount of fuel added when you go Open Loop (WOT). The front sensor fuel readings are only monitored when you're in Closed Loop (Idle/Cruise pretty much). So the trip for those codes can only happen in Closed Loop. Adding fuel with the predator should have no effect at all in Closed Loop.
Those quys did check for exhaust manifold leaks too right? and not just from the back end of the headers back?
I didnt bring them the car to do a for real exhaust leak test yet. I am on my way there in a bit to do so. Will see what they say.
Nothing, when I was going to take it to them the codes went away and got the rich codes. It just seems that I have to do some fine tuning of things and adjust my driving to try my best to keep the AF as rich as possible. Once I pass inspection, then I will try to see what the deilo is, and deal with my tuning issues once and for all lol.
I have had this issue. Also, think it's a common high HP / boost cars. The only way I have gotten mine to go away is to turn off my rear O2's. It popped up again today after 11 months. I had the car at the dealer Friday because my auto up on my window was not working. So I know they messed with the computer to fix that and they calibrated steering angel sensor. I think they might have turned them back on. Exhaust leak is a possibility because I have cut-outs and they do leak. Before I turned off the rear O2's I had the code pop a couple of times when opening my cut-outs. Back to my tuner to check if they turned my rear O2's back on.
[just in case...] You know about calibrating the auto-up/down on the windows right? With window all the way up hold window down button until window goes all the way down and then 5 seconds more after it stops. Then hold window up button until window goes all the way up and 5 seconds more. Auto up/down should work again. It forgets every time you unhook the battery and then they seem to just forget occassionally for no reason at all. When it forgets, auto up or auto down or both ways don't work.
Where was this bit of information when my auto up stopped working?? It fixed itself after a couple days though..... Or maybe I was upset about it and held in the up position out of anger..... Who knows.
FYI after Johan got a hold of my tune, I have not seen these codes again. I have rich codes now, but those I know how to deal with, plus sending Johan some more datalogs tonight to tweak it some more.
