This customer first came to us to get Unitronic software installed on his bone-stock 2007 Audi A4 2.0T. The Stage 1+ software flash gave him the upgrade bug we are all too familiar with. Soon, he was back for exhaust, intercooler, and other bolt-on modifications before he eventually pulled the trigger on a turbo upgrade. His goal was more power with stock-like response, so a K04 sized turbo was the logical choice. After much research and discussion back and forth, he eventually decided on the K0R-GT kit from RAI Motorsport. The kit uses S3 fuel injectors and Unitronic Stage 2+ software to deliver a quick, fun to drive car with virtually no turbo lag.

About Apex Tuning is an independent mechanic shop specializing in Service, Repair, Maintenance, Diagnostics and Performance Tuning for VW and Audi vehicles.  Based in Raleigh, NC we are just a short drive from anywhere in the triangle region.
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