So i had my smog test done today and to my surprise it failed but NOT for the e85 or the fact that i put the oem cat pipe on. It failed because i cleared a p0171 code an hour before driving to the smog place. He told me theres 3 out of 5 readiness check that the car needs to complete before the ecu can give a "pass". So the smog tech told me to drive around for a couple of hours and i did exactly that. Ive been checking with the Dash Command app and a ODB2 dongle, its still not "ready". As im driving home the darm p0171 keeps coming on!! and if i clear it ill reset the readiness code! anyone got any advise? or suggestions? Ive only had the e85 for about 2 months. My tuner thinks theres a leak causing the p0171 code but ive checked and double checked everything.

 

What state is this?

 

Your fuel trims are off. Check tune or hardware

 

**** capital of the world...California lol.

I spent the whole day taking my aem intake apart and found that it wasn't tighten all the way leaving a small gap. I can see black gunk inside the intake. So hopefully that'll fix the p0171 code.

 

yeah check that and all the lines to the manifold, if you wanna be 100% you have no leaks, let the car run and spray some carb cleaner on the vacuum lines on the mani, if the car starts idling funny, you got a leak.

 

so was feeling good today thinking ive fix the leak but the darn p0171 all of a sudden pops up! im starting to think its the tune, not enough fuel and too much air.

 

did you see my post?

 

Yeah I was hoping it's not the tune and thought I actually fix something.

 

so, did you check your fuel trims?

 

How would I check it?

 

evoscan, you need to have the tactrix cables

 

So even with the oem cat back on I'm still getting the p0173 code. Either my fuel trim is really mess up or my o2 is going out.

 

I had the p0171 code that would come and go as well. It ended up being from a tiny leak in the uicp. I changed all the couplers and clamps over to tbolt clamps and the code never came back again, so far (~600miles on it fixed). Very happy about it, since it was getting on my nerves and for awhile i couldnt figure it out lol

 

So, did you check your fuel trims or should I suggest it three more times? One of them will be more than +/- 12.

Dash command can show you the trims, no need for evoscan if you don't have it.

 

Lol no I got it and I also have dash command so I'll give that a look thanks