Results of walnut blast near Chicago!!
 

Took my wife's 135i in because of the typical symptoms....sluggish and running rough. After the blast, car felt like new again!! Felt like it found 50 hp. Don't want to break Forum rules by advertising a non-sponsor, so email me at petegtsv10@yahoo.com if you want website info. They treated me and the car very well and only charged $300.