afr and timing big swings at P or N idle

[Ecotec2.4]

Sirs
I installed a modified saab intake manifold on my LE5 to use the LSJ 2.5 bar map sensor with IAT being used there instead of at MAF. The info I have found on the new settings between 2 bar and 2.5 bar map linear and offset have been made, ZZP tune being the 2 bar.
Problem I am having is at idle in park or neutral the timing swings from -1.5 up to 34 and afr 11.? to 19.? back and forth till it dies. If you pull it into gear when it starts to die, it will straighten out. You can see this at the end of the log attached.
Thanks for your time

07 G5 GT 2.4L turbo
2.5BAR..DD-1.hpt
ZZP Start-up Tune.hpt
2.5test.hpl
ihavecash

[noorjSS]

what intake manifold gasket did you use

[Ecotec2.4]

The stock metal LSJ gasket was used with the saab intake manifold.
I sprayed brake cleaner looking for vacum leaks but found none.
not sure where to look now.

[noorjSS]

I would use the saab gasket, its a paper material that will seal better. Also what tb gasket? also try putting it on OL and see what the afr does. might also try bumping the idle speed up a tad, see if it helps. kinda seems like a vac leak to me though

[armcclure]

Dial back your over/under tables also. Ol is a good way to check where the problem lies as Noor suggested.

[Ecotec2.4]

Thanks for the info guys, I hope to be able to play with it again this weekend.