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I dont think the inverse table makes a big diff, nowhere near the swings youre seeing as temperature has more effect on detination therefore spark, than o2 therefore fuel.

I'm just worried with the inverse table like that, what other tables rely on it therefore them being wrong because of it...

Csn you zero out the coolant contribution % table?

I don't think that is a great idea.

vlad01 wrote:The coolant contribution table. Dylan is the most experienced person on here in relation to tuning that table and hopefully can chime in. There is a bit of a back and forth in tuning it.

I don't do boost, but happy to do a sanity check over the bin if you'd like to post it.

Will do this arv when I get home mate

Boost seemed to be ok as well as higher up the kpa range

Yeah it seems like the heat soak of the IAT sensor at low loads and idle. It's a common thing and the factory worked hard to get this dialed in and employed some trickery else where to get around the even worse hot restart issues, (massive negative value in the inverse table at the higher coolant temps).

Here is the bin im working on at the moment

That sounds like my issue!

Also, i have double fire to upper 2.2ms and lower to 2ms but it doesnt go into double fire mode till about 4ms. Not sure why but is seems ok.

vlad01 wrote:Yeah it seems like the heat soak of the IAT sensor at low loads and idle. It's a common thing and the factory worked hard to get this dialed in and employed some trickery else where to get around the even worse hot restart issues, (massive negative value in the inverse table at the higher coolant temps).

I usually alter the higher temps in the inverse table for these reasons, also in the coolant contribution table I also often increase the coolant contribution a lot. It does stabilize AFR's more. Especially with aftermarket cams. Even more so with aftermarket manifolds.

How much do you alter the inverse table by Dylan?

If you look at my bin I'm down near 10 and I've done a couple of logs and seems ok, but unsure if this alters other tables that change things especially on boost