GIAC 1+ Cel after 179 Mil!!!!!!

[Junglenrg]

I need some and help and was not able to find anything on Audizine.

Little background on the car:
- Timing Belt/Head gasket replaced 5k ago
- Most of the hoses and sensors replaced on the cooling system
- Vacuum Line Replaced 5k ago
- I have done a lot more work on the car but the things listed are pertinent to the problem IMO.

First I thought it was my DV, but the boost is smooth and consistent through and through. There is no hissing or inconsistent noise.
I should probably get a boost gauge to see what I am boosting at now. Feels like stock levels with added little extra from the exhaust and the HFC.
Any info on this would help.

My Set UP
- GIAC 1+
- TT 386cc Injectors
- 034 HFC
- AWE Cat back Exhaust
- NKG BKR7E’s gaped at .04 with 2.0T coil pack (Might be the problem since most people run at .028 or .032)

I got a CEL and my car does not pull nearly as hard.

I am getting the P0171 Bank 1 System is too Lean
Suggested to replace the crankshaft position sensor (which I did before the GIAC flush)

Also it gave me two other possible codes that could be the cause:
- P0102 MAF Sensor Circuit Low Input
- P0411 Secondary Air Injection Incorrect Upstream Flow Detected

Do you guys think it might be from NKG gaping? I cant imagine it is, because it ran like a dream for 179 miles.

Please Help!!

[Militant-Grunt]

Make sure you don't have any vacuum leaks, generally an engine will run lean if you have a fairly substantial leak. If you have access to vag com, go to 01 ECU - Measuring value block and see block 32.

[Junglenrg]

Roger that,
I can only do this with the with Vag Com?
I wen tot Autozone (they do free diagnostics) to get the the check engine checked out.
Will report back as soon as I hunt down a Vag Com. Thanks!!

[Junglenrg]

correction, the spark plugs are gapped at 0.028

[Junglenrg]

Sorry took so long to update
Here what was wrong:
The MAF had to replaced
The Breather Assembly is leaking
And now my DV sounds like a DUCK under boost =(

I just bought 034 Motor Breather Assembly and 710N DV and all New elbows hoses and everything else to replace the whole Breather Assembly.

I hope to throw this on this weekend to prey to God I can start enjoying the GIAC benefits!!!!