I recentyly bought a 92 Z28 and around 3000-3500, it seems to hesitate. The motor was rebuilt, drives fine when just cruzing but when I stomp on it, it acts up around 3000. The guy I bought it from says it needs to be tuned. I am talking to a guy who runs https://tunedperformance.org/. He thinks we need to datalog and burn another chip. Any ideas? Am I doing the right thing?