Cold Air Intake

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Apr 26, 2021 | 09:33 AM

#21

C5MSG2004Vert

Drifting

Joined: Mar 2018

Posts: 1,365

Likes: 414

From: New Jersey

Quote:

Originally Posted by o2bnkc

After reading all of these, most were figured out and fixed. They were either leaking air, or to much turbulence in front of the MAF sensor. Call me stubborn, but again, it doesn't sound like it was installed properly.

My 04 was throwing those codes after a Vararam install with the power duct. In my case it was not improperly installed. The Vararam screws up the air flow and the MAF does not report the correct airflow at low engine speeds. It was not an air leak. it was temporarily fixed by changing the fuel injector slope to -10 and then increasing the power enrichment +10 with a Trinity handheld tuner. The fuel trims were still high at first like +10, but the PCM corrected it to around 0 and they stayed good. Before that change they were hitting +25 and throwing the codes. The car ran great but it was too lean at part throttle so I just got a $150 tune at ECS. That fixed everything and the car runs great.

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