Midwest Eurosport
630-595-5577
http://www.midwesteurosport.com/
104 W Irving Park Rd,
Bensenville, IL 60106
My buddy has a track prep'd 993 and has been going to them for years. They have an excellent reputation in IL. They charge about 2/3 the labor rate of the dealers & parts are comparable. Where you really save money is time - they don't drag out the billable hours like dealers often will. Here are 3 examples of service I had:
30K Service - Dealer quoted $1349. Eurosport did it for $520! (seriously)
Inner & outer CV Boots - Dealer quoted $1400. Eurosport did it for $505.
F&R Brake pads - Dealer wanted $1200. Eurosport did it for $478.
Also, they cleared a CEL for me and when I offered to pay for 1 hour labor, they said don't worry about it. They work on all Porsche's - 924, 914, 944, 968, 964, 993, 986, 997, etc. They understand that not everybody has a GT3 RS and work to accomodate everybody.