Im throwing these codes. I was gonna just change them to report no error in hp tuners, but wasnt sure. Wanted to run them by you guys.

[PCM] P0136 - HO2S Circuit Bank 1 Sensor 2 (SES)
[PCM] P0156 - HO2S Circuit Bank 2 Sensor 2 (SES)
[PCM] P0178 - Fuel Composition Sensor Circuit Low Voltage (SES)

 

The o2 sensor codes are safe to get rid of, as for p0178 it's for a sensor that lets you run E85. If your not running it I say get rid of the code.

 

Threw a maf code last night. Take it up through 1st just fine.Shift to second, and around 4500rpm it sputters/misses and then climbs to redline. Throws a maf code right when it happens. Iv done some highway pulls in 4th and 5th past 4krpm and nothing happens. Kinda weird. I took my filter/air intake assembly off tonight, re tightened everything and made sure it sealed off to the throttle body. Any ideas?