GaleForce's build

Originally Posted by Mitco39

I have the exact same issue. I have been spending a bunch of time as of late tuning and playing with Uprev. Take a look in the Edmonton group (I believe your a member in there) under the mod discussion thread.

Anyways I believe its being caused by 2 things. The fact that the BP kit removes the PVC on the boost tubes, which is needed. But I also think its trying to activate some sort of emission operation that is causing the lean issue. There is something going on in the backend and the fact that your having the same issues as I mean that its not just something I inadvertently did. How is your idle when it is meeting or close to 14.7? Mine hunts, again I think its a byproduct of removing the emission systems but I dont see anyone else having these issues, or they are just living with the bit of a lopy idle.

This kind of relates to my rich lean bank thing that I got figured out. It is not a leak causing this issue, the ECU is directly causing this issue. It might also be related to the VVEL on the car. I will be spending some more time logging and playing with it this weekend I hope.

Also if you have the ability unplug your Post cat O2s if you notice the engine richening up at idle for no reason. This fixed that issue for me, but after tuning mine a few days ago I now have the lean out on idle.

If you figure it out before I get time to play with it let me know. haha

Originally Posted by GaleForce

My idle bounces around. It will move from 13.5ish to 14.9ish, mostly staying in the mid 13-low 14 range.

I believe I had the lean bank code. Vince had said to clean the MAF. Made no difference.

I really thought it was the BOV staying open intermittently at idle. Oh well, it's kind of good to know someone else has the same issue.

Originally Posted by Mitco39

I have money on the post cat O2s. Sasha put both of them in one bank as your aware and they do have an effect on the engine and the tuning. Unplugging them and turning off the associated CELs and now mine idles around 14.5-14.9 give or take. If you check your long term trims that will give you a bit of a look at what the engine is doing. IIRC if your LTFTs get to 75% or 125% it will throw a rich or lean bank code respectfully.

As far as that right lean condition goes I am still trying to work through that one.

Originally Posted by GaleForce

Can I check the trims with Cipher? I haven't played around with the software much.

Originally Posted by jwick

I guess I'll chime in here too. If I follow your descriptions I'm having the same issue. It was much worse on my base map than it is on my tune but I specifically pointed it out to my tuner.

Best I can describe it is this. When I'm coming off closed loop conditions (i.e. just cruising) and pull up to a stop sign/light. The car will behave just fine and then I get a hiccup in the idle. Rpms drop a couple hundred and i lean out a bit (low 16s). It immediately catches itself and idles 'fine' after that. I quoted fine because the idle is decent but not rock solid like it was NA. It held steady N.A. and now it bounces within a 50 rpm range.

I'll give more details in a follow-up post but Is this similar to what are talking about?

Edit: idle Afr on my innovate is between 15.2-14.4