P2187 code on tuned car with aftermarket intake

[33light]

I ran my car on a scanner today, and saw only the code P2187. Could this be because I have a big bore intake? My car is tuned for it, so I’m assuming the tuner hid the code so I don’t get a check engine? Can anyone speak on this?

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[KensBlueGenX]

What A/F ratio does the car typically show on your tuner?

 

[gtman]

When you ordered the 1.5R tune you noted that you had a race MAF, correct?

That lean at idle code isn't something a tuner would hide. You're saying you see the code on a reader but no CEL ... that's odd. What do your fuel trims look like?

1. Start by looking for vacuum leaks.
2. Check to see if there's a tear in your PCV hose.
3. Could be a MAF or 02 sensor issue.
4. Worse case, this could possibly be injectors.

 

[33light]

When you ordered the 1.5R tune you noted that you had a race MAF, correct?

That lean at idle code isn't something a tuner would hide. You're saying you see the code on a reader but no CEL ... that's odd. What do your fuel trims look like?

1. Start by looking for vacuum leaks.
2. Check to see if there's a tear in your PCV hose.
3. Could be a MAF or 02 sensor issue.
4. Worse case, this could possibly be injectors.

Yes I did note that. My fuel trims are optimal. K.con is 49-50 regularly. AF ratio on idle is 14-15, and the same when driving, 29 when coasting though. I recently got a emissions system CEL, but it went away after 2 days and roughly 80 miles

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