c-41

I have some out of date ColorMax 400, expired in 2011. I plan to shoot it at iso 200 (a stop per decade) and I rather fancy developing it myself. My question is will I need alter the dev time as if I'd pulled it if the film was fresh?

Hi, Just going through initial attempts at C-41 Stand Development using Tetenal and this recipe: VARIATION 2 baths (for example: Tetenal C-41 kit) Pre-soak = 3m (no agitation) Developer = 45m (1m continuous agitation at first) 1st wash = 3m (changing the water every 30s) Blix = 60m (1m...