[Diy_efi] WBO2 and AFR

[Fehn, Ron G]

thanks.  i will be working on the timing as soon as paint dries.  i
played around with it a bit at idle/off idle to see result.  initial
tune has KC at about 3600rpm and 40-50 map so pulledout 2 deg and it
went away.  no KC now for a year.  will run a few more aggressive SA
tables and see how it responds.  

-----Original Message-----
From: diy_efi-bounces at diy-efi.org [mailto:diy_efi-bounces at diy-efi.org]
On Behalf Of Adam Wade
Sent: Thursday, July 07, 2005 1:31 PM
To: diy_efi at diy-efi.org
Subject: RE: [Diy_efi] WBO2 and AFR


--- "Fehn, Ron G" <RFEHN at amfam.com> wrote:

> no cat. no emmishions stuff.  1984 vette with 7747
> and TBI.  would it idle better a bit richer in CL?
> 224/230 @ .05 114 LSA. i had it at 14.3 in .bin for
> a while and recently moved back to 14.7.

People who are more familiar with the 747 can probably
answer better than I, but...

If you are running closed-loop at idle, you'd probably
have an easier time tuning it yourself if you forced
open loop running there and shot for about 5-6% CO as
your target (assuming you can get the car to a CO
sniffer somewhere while you manipulate the idle bin).

For cruise, I would tend to suggest running lean of
stoich with a fair amoung of EGR and timing advance,
if you can make that happen.  This should give you
best economy at cruise, assuming you are not worried
about emissions.

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