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<DIV><FONT color=#000000 size=2>I've tried FTP'ing before and can't seem to make
'er work. The customer phoned back and said it's a little fat at the bottom end
still, so I'm going to pull some more fuel out at the lower RPM's. I'll send you
the file when I've got it perfected...I only was given time to do a reburn 3
times (within an hour) !!</FONT></DIV>
<DIV><FONT color=#000000 size=2></FONT> </DIV>
<DIV><FONT size=2>Lyndon.</FONT></DIV>
<BLOCKQUOTE
style="BORDER-LEFT: #000000 solid 2px; MARGIN-LEFT: 5px; PADDING-LEFT: 5px">
<DIV><FONT face=Arial size=2><B>-----Original Message-----</B><BR><B>From:
</B>Dave Zug. <<A
href="mailto:dzug@delanet.com">dzug@delanet.com</A>><BR><B>To: </B><A
href="mailto:gmecm@diy-efi.org">gmecm@diy-efi.org</A> <<A
href="mailto:gmecm@diy-efi.org">gmecm@diy-efi.org</A>><BR><B>Date:
</B>February 24, 2000 10:36 AM<BR><B>Subject: </B>Re: BPW
numbers<BR><BR></DIV></FONT>
<DIV align=left><FONT face=Arial size=2>Customer?! I thought I was
contributing to a hobbyist! ;-} well the "professional"
advice would have been much more conservative. (i'm no pro). didn't know I
was messin with 3rd party money and someones livelyhood. glad it worked out.
FTP the final prom to GM_ECM FTP now for the
collection! "cammed 350 TBI w/ 305
injectors" ;-}} </FONT></DIV>
<DIV align=left> </DIV>
<DIV align=left><FONT face=Arial size=2>it's your work, no one really
expects you to upload it...just being funny a little. ;-P</FONT></DIV>
<BLOCKQUOTE
style="BORDER-LEFT: #000000 solid 2px; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px; PADDING-LEFT: 5px; PADDING-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A href="mailto:nwester@eidnet.org"
title=nwester@eidnet.org>Programmer</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
href="mailto:gmecm@diy-efi.org"
title=gmecm@diy-efi.org>gmecm@diy-efi.org</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Wednesday, February 23, 2000
9:42 PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: BPW numbers</DIV>
<DIV><BR></DIV>
<DIV><FONT color=#000000 size=2>Thought I'd keep ya'll up to speed. I
added 12 points to the fuel map from 50kpa through 100 and from 1200 RPM
+. This brought the BL #'s right in the green at 128-129. I also added
4-8 degrees of spark at varying areas...now this little rig really honks
!! The customer is all grins.</FONT></DIV>
<DIV><FONT size=2>Lyndon</FONT></DIV>
<BLOCKQUOTE
style="BORDER-LEFT: #000000 solid 2px; MARGIN-LEFT: 5px; PADDING-LEFT: 5px">
<DIV><FONT face=Arial size=2><B>-----Original
Message-----</B><BR><B>From: </B>Programmer <<A
href="mailto:nwester@eidnet.org">nwester@eidnet.org</A>><BR><B>To:
</B><A href="mailto:gmecm@diy-efi.org">gmecm@diy-efi.org</A> <<A
href="mailto:gmecm@diy-efi.org">gmecm@diy-efi.org</A>><BR><B>Date:
</B>February 23, 2000 8:06 AM<BR><B>Subject: </B>Re: BPW
numbers<BR><BR></DIV></FONT>
<DIV><FONT color=#000000 size=2>Thanks for the info
Dave,</FONT></DIV>
<DIV><FONT color=#000000 size=2></FONT><FONT size=2>This thing (now
that I've got some other numbers)--runs at 154 BL at cruise. Idle is
at 132 (close enough) ---so I'm assuming WOT is going to be pretty
lean. </FONT></DIV>
<DIV><FONT size=2>Here's some more specs...Cam duration 283 INT and
286 EXH, Intake lift is .435</FONT> </DIV>
<DIV><FONT size=2>and exhaust is .455. Compression ratio is 9.4 to 1
and the heads have been ported to match Vortec specs (this truck is
a 1988). 3.42 ratio diff is what we're working with--and actually
the truck peels around pretty good the way it is...we're just a
little concerned about the lean ratio at cruise and WOT. I'll try
adding 15% across the upper end of the fuel map to start
with...</FONT> </DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>Lyndon.</FONT></DIV>
<BLOCKQUOTE
style="BORDER-LEFT: #000000 solid 2px; MARGIN-LEFT: 5px; PADDING-LEFT: 5px">
<DIV><FONT face=Arial size=2><B>-----Original
Message-----</B><BR><B>From: </B>Dave Zug <<A
href="mailto:dzug@delanet.com">dzug@delanet.com</A>><BR><B>To:
</B><A href="mailto:gmecm@diy-efi.org">gmecm@diy-efi.org</A>
<<A
href="mailto:gmecm@diy-efi.org">gmecm@diy-efi.org</A>><BR><B>Date:
</B>February 22, 2000 9:35 PM<BR><B>Subject: </B>Re: BPW
numbers<BR><BR></DIV></FONT>
<DIV><FONT face=Arial size=2>On a MAF system, if you UP the fuel
pressure 7 - 10 %, and set the flow rate to a value 7 - 10%
higher, the 305 injectors will have the best chance on a
un-hotrodded 350 motor IMO. you can add 20% more FP and
mess up idle and cause BLM skewing, and the WOT will have more
fuel, or you can leave the FP alone and idle will be great but
WOT may have the injectors static and still have low o2
readings. Either is a comprimise. 305 to 350 = bit
more than 14% more air, need 14% more fuel and thats with no
other intake mods. If you were using 12ms at WOT on the 305
you'll use the same injectors 14% longer in the 350 - closer to
static (or over)</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>dont just change the BPW by 14%,
(in a MAF) you'll do the opposite of what you are after. the
injector base PW should be the actual setting for the injectors
used - then you adjust it a bit for more FP.. which makes the
injectors have a higher flow rate than they are
"stamped". a better spray pattern too. On a TPI
(not TBI) each of the 8 are rated at 19#/hr for a 305 and 22#/hr
for a 350. 19 * 1.14 = 21.66 amazingly... keeps the injectors
below something like 80% of max duty cycle.</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>and you're "off road" so
no problem with the feds.</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>Please anyone correct anything. I'm
not a pro, I just play one on TV.</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>PS - my soon to be dropped-in 383
will start out with 350 injectors. (MAF too). </FONT></DIV>
<BLOCKQUOTE
style="BORDER-LEFT: #000000 solid 2px; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px; PADDING-LEFT: 5px; PADDING-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message -----
</DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A href="mailto:nwester@eidnet.org"
title=nwester@eidnet.org>Programmer</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
href="mailto:gmecm@diy-efi.org"
title=gmecm@diy-efi.org>gmecm@diy-efi.org</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Tuesday, February
22, 2000 4:46 PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> BPW
numbers</DIV>
<DIV><BR></DIV>
<DIV><FONT color=#000000 size=2>Greetings guys,</FONT></DIV>
<DIV><FONT color=#000000 size=2></FONT> </DIV>
<DIV><FONT color=#000000 size=2>Just wondering what BPW
numbers would do when a guy changes a 305 to a 350. The 1988
TBI injectors are different, PROM BPW numbers are 148 for a
305 and 135 for </FONT><FONT color=#000000 size=2>a 350.
This is based on flow in grams/sec...what would you have to
set a 305 injector to, to work in a 350 properly -- or is
the flow rate too low already ?</FONT></DIV>
<DIV><FONT color=#000000 size=2></FONT> </DIV>
<DIV><FONT color=#000000
size=2>Lyndon.</FONT></DIV></BLOCKQUOTE></BLOCKQUOTE></BLOCKQUOTE></BLOCKQUOTE></BLOCKQUOTE></BODY></HTML>