Nissan 370Z Forum
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Nissan 370Z Forum (http://www.the370z.com/)
-   Engine & Drivetrain (http://www.the370z.com/engine-drivetrain/)
-   -   Running lean after CAI and muffler delete (http://www.the370z.com/engine-drivetrain/132255-running-lean-after-cai-muffler-delete.html)

Jinxx 10-27-2019 09:55 AM
Quote:
Originally Posted by KeithF (Post 3885360)
Hello all,

I recently installed stillen CAI on my z, it ran beautifully! but after 50 miles I get a CEL. I decided to buy some MAF cleaner and do my diligence, I reset the ECU again. It ran beautifully again! another 50 or so miles the CEL pops up again and idles at 1k and runs like a limp donkey half the time. This time I run a scan and I get P0174 for bank 2. I clean the MAFs again, reset the ecu, and spray some maf cleaner to see if I can detect any vacuum leaks. I couldn't find any leaks, and after the reset it runs beautifully again. Here we are another 50 miles later and the CEL is on, idling at 1k, and wondering if I made a mistake by putting the CAI on after the muffler delete and wondering if I absolutely need a tune. Any ideas?

thanks,
Keith

You could also try putting the OEM intakes back on and see if the issue goes away ...if it does then you know a tune will correct it ...if not there is another issue

nandosman 10-27-2019 03:34 PM
I had the same issue as you after I put my stillen CAI, FI Exhaust and test pipes, limp mode, same codes as you. I would clean maf sensors multiple times and the problem would go away for some time, and then come back. In the end, I cleaned my MAF sensors, and my throttle bodies and that fixed the issue for me.


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