Running lean after CAI and muffler delete

Jinxx · 10-27-2019, 10:55 AM

Quote:

Originally Posted by KeithF

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, 04:34 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.

10-27-2019, 04:34 PM	#17 (permalink)
nandosman Enthusiast Member Join Date: Mar 2017 Location: IL, US Posts: 344 Drives: 2014 370Z T/S Rep Power: 8	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. __________________ FI Non-Res Test Pipes \| FI 18" Res CBE \| Stillen Gen 3 CAI \| Dynotuned @ Dynosty EcuTek 325 whp

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