I have a 2001 c5 corvette with a ls3 tsp f35 cam headers corsa exhaust and varraram intake the issue I am have is sometimes rolling to a stop I get idle surge when I come to a complete stop it idles fine also if it starts doing it I can turn car off and back on and it will go away for a bit I checked for vacuum leaks did compression test cleaned Tb replaced manifold gasket and it still does it from time to time any help will be appreciated