Sisco360

In theory I guess it is possible... After I cleaned my MAF and intake I didn't reset my fuel trims. I noticed some bogging when the car is driven at higher rpm's after a while.

Could it be possible that the car is running too rich at higher rpm's to cause it to bogg? Has anyone experienced this after MAF or filter cleaning? I reset my fuel trims last night and it seems to have helped but who knows. Either that or a clogged cat for me (no CEL on though). I am going to check the cat tonight.

Coils, plugs, wires are replaced not that long ago. And I am pretty sure it's not a compression issue either because it's fine when driving normal with moderate higher rpm's the thing pulls fine and no idle issues.

2004 108k miles.

RIWWP

iTrader: (2)

The quick answer is to reset your fuel trims and see what happens. If it changes nothing, then it's likely not associated with your trims. A dirty MAF could be responsible for a greater-than-accurate airflow reading, and your fuel trims got adjusted far richer, cleaning it now shows accurate airflow, and the ECU is adding too much fuel. I'd expect the reverse though, and a dirty MAF would prevent it cooling as much from the airflow, and reading falsely low, cutting back on fuel and making you run lean.

A clogged cat generally gains in power loss the more airflow you are trying to push through the engine/exhaust, and moderate/low load may not show any power loss at all.

Feel free to PM me if you would like some diagnosis in person, since we are relatively close.