Matt Danger's B5 S4 Owner Log

Today I went to my friend’s house and installed my WOTBox 2-step launch control. The instructions are awesome! Full color photos and very detailed and specific instructions. It was pretty easy to set the stall RPM, but after I set it I went out for a drive and found that the box was cutting the ignition even when the clutch was out and preventing me from accelerating past the specific RPM. So I disabled the box until I could figure it out later.

Afterwards I wanted to track down an exhaust rattle I’ve been hearing since I put the car back together 3 months ago. I couldn’t find anything loose. It sounded like the source of the noise was the turbo itself, so I used a long extension and placed on end on the turbo and one end against my ear. Sure enough I could hear a metal on metal rattle. The wastegate flapper on the passenger side turbo was loose.

I put the car up on jackstands and crawled under. Fortunately the passenger side wastegate actuator bolts were kind of accessible. A few small turns of the adjuster nuts tightened up the wastegate. No more rattle.

As an added bonus, the adjusted wastegate actuator seems to have greatly improved my part throttle boost oscillation!