TBSS CAI now lean codes

[BADS335]

Can someone help me with a relatively quick fix for lean codes? I know VE is probably the best thing to do for this, then dial in MAF, but I need to work something out as a temporary fix till I have time to do full VE tune. Does someone have a CAI TBSS file I can use to start with? I looked in the repository but nothing really fits my truck quite right. Maybe just dial in MAF for now? Then do VE and re-cal MAF when I have time? I would be doing everything off of fuel trims as I do not have WB on the truck yet.

Thanks

[Cantalope Kid]

Relatively quick fix without since you don't wanna put in any work to tune properly...just multiply your existing MAF/VE table by 10% (current x 1.10) to add more fuel across the board. Your lean issue is in there somewhere, right? Clear your lean code and see if it returns. Keep adding fuel until your lean issue is no more. I wouldn't add more than 20% without looking elsewhere for the real issue. This is absolutely the lamest way I can imagine trying to fix your issue short of copying someone elses tune from the repository expecting total success.

[jimmyblue]

If you're throwing lean codes I doubt it's to do with any
CAI. Start with checking the character of front O2 sensor
switching at cold / barely wamed up idle. Mistrimming is
the most common way to get bent closed loop operation
(that, and maybe burning / nicking an O2 sensor wire
while messing).

[HoP]

Is the vehicle modified more than a CAI?

If not it sounds like you have unmeasured air coming in from behind the MAF. Look for vacuum leaks.

[Alvin]

TBSS's will go lean when you change the intake up. Just recalibrate the MAF and you'll be good to go.

[BADS335]

Cantalope Kid: I want to properly tune for the intake, I just don't have the time in the next few days, but the truck is a DD so I prefer to get the code taken care of (wifes car), even if it means too rich for now. Not sure why a smartass remark is needed here, I did say a quick temporary fix till I can do a full tune.

jimmyblue and HoP: Only mod is CAI. Thanks for the guidance. The code came up just after I installed the CAI so I can not see it being anything else. I know it seams odd to me as well. But I have read that TBSS's can show lean with a CAI.

FYI, I am not new to tuning LSX's. I am rusty as I have not done much in years. I thought of just adding 10% to MAF and VE or even reducing stoich, but I wanted to verify and see if there was another way. Just looking for a "bandaid".

I will look and be sure I do not have a leak and take some time tuning the MAF for now.

Thanks

[BADS335]

TBSS's will go lean when you change the intake up. Just recalibrate the MAF and you'll be good to go.

Thanks!

[BADS335]

Recalibrated the MAF. I think it should be good. Trims look much better.