Timing?

FSTNG said:

the lower the timing the hotter the exhaust side of things will get, don't want to burn a valve. you shouldn't have to go that low though, i would look at other areas before timing. If you don't have a wideband on it, try to get one or even put it on a dyno to see what is happening. Datalogging is your friend. You can chase something like this for a long time when it would be a simple matter to hook up a few sensors and log what is going on.

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