very lean at idle after couple different upgrades, need help

s300 and SManager software questions & answers
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integraguy041
Posts: 23
Joined: Sat Dec 23, 2017 8:56 pm
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very lean at idle after couple different upgrades, need help

Post by integraguy041 » Sun May 26, 2019 5:07 pm

Hi everyone,

So I am completely stumped at this moment.
1994 OBD1 Integra with B20/Vtec

Installed Skunk2 Ultra Street Manifold
Bigger TB
New Gaskets
Cylinder head was re-installed as well.

Upon startup, car runs very lean at idle.
I have flex fuel and wideband hooked up as well.

S.Trims tries to compensate, but does nothing.
I have also added up to 100% more fuel through the overall fuel trims, and still does nothing.
Sprayed carb cleaner all over the place, doesn't bog.
Like I said, at a complete loss.

See attached tune and datalog.
I don't think this has much to do with the S300 itself, but seeing if anyone can point me in the right direction.
Thank you.
Attachments
Issues #3 Datalog 5-26-19.s3d
(3.61 MiB) Downloaded 12 times
e85 + o2 + FF.skl
(45.81 KiB) Downloaded 12 times

crluver123
Posts: 112
Joined: Tue Oct 10, 2006 10:13 pm

Re: very lean at idle after couple different upgrades, need help

Post by crluver123 » Mon May 27, 2019 6:09 pm

never touch the overall fuel trims.
Get a professional tune.

integraguy041
Posts: 23
Joined: Sat Dec 23, 2017 8:56 pm
Contact:

Re: very lean at idle after couple different upgrades, need help

Post by integraguy041 » Mon May 27, 2019 6:34 pm

The fuel trims were setup by my tuner.
I know the values that he had in there originally.
I was just changing them to see if I would get a different response.

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