BLM boundaries

[Bob Wooten]

One of the guys on the 3rd gen Camaro site restricts his boundaries very
small so that the BLM does not move. this way he can use the Int to tune the
VE's in. He said that he does this after he gets the BLM's dialed in as
close to 128 as he can.  This way he can fine tune it. when he is done he
sets them back to stock.

BW

-----Original Message-----
From: owner-gmecm at diy-efi.org [mailto:owner-gmecm at diy-efi.org]On Behalf
Of Shannen Durphey
Sent: Friday, August 10, 2001 6:25 PM
To: gmecm at diy-efi.org
Subject: Re: BLM boundaries


Changing cell boundaries can help with engines that like to idle roughly,
esp.
if idle rpm is increased.  I've seen times when the ecm is flopping between
two
cells, or spending bunches of time in one cell.  This is usually with
incresed
idle speed and/or larger cam and fluctuating vacuum readings.  A noticable
difference in driveability can show up as the ecm switches from one cell to
another.  Sometimes it's better to move the lower cell to encompass more
range.

Shannen

JTesta1966 at aol.com wrote:
>
> In a message dated 8/10/01 2:42:37 PM Eastern Daylight Time,
> nwester at eidnet.org writes:
>
> << Guys--what are the reasons for changing a BLM boundary, other than to
>  provide a rather large window
>  of operating or a poor state of tun >>
>
> I personally change cell 0 and cell 1 boundaries if someone requests a
higher
> idle speed. I always did it under the assumption you get that 2 cells of
> resolution back. Maybe others do it for other reasons and I'd like to read
> about them as well.
>
> ================================================
> Jim (FA) Testa                                 Type86 on
buick.fiendish.net
> ASE Cert Master Tech                                 jtesta1966 at aol.com
> L1 Adv Engine Performance                     http://www.turbojim.com
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> </A>
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