How lean can you go?

[e30_Turbo]

Starting to really fine tune my lump now, after over a month of being back on the road and loving it, one alternator belt and water pump busted so far and a shite load of fuel!

I'm now playing with economy as most of the under 10psi is mapped and showing no signs of det, so I'm happy with that.

What's the stock AFRs on cruise?

So far I'm able to run 15-1 on cruise and only "feel" a drop in power when I let it fall off to around 16 / 16.5 -1.

I'm running 26degrees of timing at 3k doing 80mph @ 45/50 kph.

My mpg's are not that bad, averaging 120miles to £20, even with some boosting I can see 110miles.

I just wondered how that compared to stock and also how others have tuned the cruise area of their maps?

Ow and does anyone have some rubber glue? I can't get any traction in the wet at all, sideways everywhere today

[RowdyBurns]

You can run as lean as you like on cruise. With a nearly closed throttle there is not enough energy in the burn to do any damage.