CrystalRedSS

Ok so yesterday my car threw a P2177. I've had bad-mab catless dp and K&N SRI on my car for about a week now and yesterday when I would be barely on the gas the car would start jerking as if I were tapping the gas repeatedly. I have the O2 sensor plugged in but i currently have the sensor ziptied underneath the car and not screwed into the dp b/c i was waiting for my vibrant sensor adaptor to get here. Also, at idle sometimes, the car would sound like the rpms were dropping then rising back to normal but the gauge read steady at 900. I got the code scanned at auto zone just now and there are four different things that can be causing this.
"Definition: Fuel trim system lean at cruise or accel. Explanation: The ECM has detected a lean air/fuel ratio probable cause..."

1. Low fuel pressure.
2. Blocked fuel filter.
3. Failed MAF sensor
4. Failed HO2S (Heated Oxygen Sensor).

Do you guys think it is because I currently don't have the sensor connected into the dp and it is basically out in the open, or is it a failed MAF sensor due to the SRI? Thanks in advance.

CrystalRedSS

Bump

Chevycobaltss3

iTrader: (2)

Al Ure problems sound like a boost/vacuum leak

SSlobalt

Did you mess with anything else besides the DP when you installed it? Do you have a plug in the downpipe where the O2 sensor is supposed to go?