I purchased a Kraftworks supercharger kit with the AEM ECU. When the shop did the installation the AEM ECU was defective. Vivid racing didn't offer to exchange the ECU. I purchased a new AEM ECU and Vivid racing refused help in any way.
I was stuck with a bad ECU and out $1600.00 for the new ECU. WAIT... It gets worse... I purchased a $700 clutch kit and after ~ 200 miles it started slipping and I'm fighting with Vivid Racing to help out with getting it replaced. Guess what? they are refusing to help AGAIN.