Hi all,

Just installed a K & N filter in my '99 E300TD yesterday. After about an hour of driving, the "check engine" light came on, and I have noticed now my boost pressure is MUCH slower building, though no other noticeable symptoms.

After reading through a couple threads, it seems the K & N MAY have allowed damage to the MAS??? Anybody else experience a similar failure with same symptoms? Any advice on a "stouter" MAS replacement?

(I'd like to keep the K & N filter if possible, as I noticed a little better throttle response and power UP UNTIL the check engine light came on and spoiled the fun!) Any help appreciated!!!

J.G.