Oh yes ....as someone mentioned before the intake needs a good cleaning...
You can also clean the Mass Air Flow Sensor....Remove using a special tool and spray it with CRC brand MAF cleaner. It removes the dust and oils.....it will improves air/fuel ratio for sure....

...I would not advise just taking out the car and beating on it just to Blow out the carbon deposits. That's where the chemical treatment (LM) comes in ...

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2003 SLK 230 (85000)
1999 E300 Turbo Diesel (388,000)
1991 350SD Turbo Diesel (185,000)