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RE: ECM calibrations for upgraded Xfire
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Bruce,
I hope this finds you doing well. I have made some progress with the DIS on
my typhoon that I would like to share and maybe get some feedback from you.
If you feel this would be better on list let me know. I have bought the prom
pac for the 3.1L Turbo Pontiac Grad Prix and have been using it in the
typhoon with pretty good success. It runs much better and the sporadic miss
that has plagued me from the start of this project has disappeared, and also
the fact if the ecm ever went into limp home mode the motor would not run
has been resolved because of the prom pac also. Just some more information
on this project. I have been moving values around to try and find the ve
tables and not found the correct area yet, dont worry I dont plan on giving
up. Looks like the DIS project does work, just it is not a plug and play if
you want all the stuff to work, especially limp home mode!!
I also found out some interesting interactions between different bins and
the prom pac that is plugged into the ECM. I have been tuning a friends 78
3/4 Ton 4X4 Chevy truck that we have installed a small block 400 that have
been bored over with a camero 90 TPI and a paxton blower onto, will have
pictures if you would like. I been tuning for the past couple of days. I
decided to try a 90 Vette bin ( ANHT ) with the camero prom pac and all
worked except the blm cell would go to 4 and never move no matter where the
throttle and or RPM were set. Did not get a chance to trouble shoot, just
wanted to get the truck drivable switched back to the camero bin and all was
well. During one of the bin changes I accidentally changed the bit for the
cylinder type ( TPI ) and when we started the truck get error 41 ( I may be
wrong , was cylinder select error though ) I did not know the prom pac and
the bin interacted. This has been such a great learning experience.... gotta
go meeting in about 10 minutes. Take care and hope to hear from you soon.
Regards
Gorden
Original Message-----
From: Bruce Plecan [mailto:nacelp@bright.net]
Sent: Wednesday, August 09, 2000 7:49 PM
To: gmecm@diy-efi.org
Subject: Re: ECM calibrations for upgraded Xfire
Turn off that awful script / coloring.
I've run a 13.7 with a cross fire.
Try reading tuning docs (at the FTP), and programming 101.
For a combo like that, you'll need to do your own chip, and just start with
a stock one or what ever ya bought from them.
Some major (yet non critical) intake porting needs done
Grumpy
----- Original Message -----
From: Dominic <mailto:surrexi2@home.com> Sorresso
To: gmecm@diy-efi.org <mailto:gmecm@diy-efi.org>
Sent: Wednesday, August 09, 2000 10:30 PM
Subject: ECM calibrations for upgraded Xfire
Hi,
I am new to your forum but it was strongly suggested by a member of the
Xfire forum that I join.
I recently "upgraded" my 84 Vette Xfire with a Comp Cam hyd roller 211/218
degree with .488/495 lift at 112 degree lobe separation. I also upgraded the
heads to the new
Trick Flow 23 degree aluminum heads. Also have upgraded ECM and TBI units to
Turbo City
systems ie 7747 ECM. I also have Extrude Honed manifold. On a 95 degree day,
car ran a 14.3 at 99.7mph and pulled 253 hp@4600rpm/307 lbft@4200rpm at the
rear wheels on chassis dyno. This was with stock configuration chip. I am
interested in knowing if anyone has a bin file for a combination similar to
this. I don't doubt that knock Sensor was causing retard of timing since
power went south after 4600rpm. I have a Needhams EMP-10 burner and would
be interested in mainly suggested fuel and timing calibrations. I believe it
is running slightly rich especially at cold idle strartup and would also
like to address dis/engagement of 4+3 OD unit at higher speeds.
Thanks for your help,
Dominic
surrexi2@home.com <mailto:surrexi2@home.com>
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<DIV><FONT color=#0000ff face=Arial size=2><SPAN
class=069195115-10082000>Bruce,</SPAN></FONT></DIV>
<DIV><FONT color=#0000ff face=Arial size=2><SPAN
class=069195115-10082000></SPAN></FONT> </DIV>
<DIV><FONT color=#0000ff face=Arial size=2><SPAN class=069195115-10082000>I hope
this finds you doing well. I have made some progress with the DIS on my typhoon
that I would like to share and maybe get some feedback from you. If you feel
this would be better on list let me know. I have bought the prom pac for the
3.1L Turbo Pontiac Grad Prix and have been using it in the typhoon with pretty
good success. It runs much better and the sporadic miss that has plagued me from
the start of this project has disappeared, and also the fact if the ecm ever
went into limp home mode the motor would not run has been resolved because of
the prom pac also. Just some more information on this project. I have been
moving values around to try and find the ve tables and not found the correct
area yet, dont worry I dont plan on giving up. Looks like the DIS project does
work, just it is not a plug and play if you want all the stuff to work,
especially limp home mode!!</SPAN></FONT></DIV>
<DIV><FONT color=#0000ff face=Arial size=2><SPAN
class=069195115-10082000></SPAN></FONT> </DIV>
<DIV><FONT color=#0000ff face=Arial size=2><SPAN class=069195115-10082000>I also
found out some interesting interactions between different bins and the prom pac
that is plugged into the ECM. I have been tuning a friends 78 3/4 Ton 4X4
Chevy truck that we have installed a small block 400 that have been bored over
with a camero 90 TPI and a paxton blower onto, will have pictures if you would
like. I been tuning for the past couple of days. I decided to try a 90 Vette bin
( ANHT ) with the camero prom pac and all worked except the blm cell would go to
4 and never move no matter where the throttle and or RPM were set. Did not
get a chance to trouble shoot, just wanted to get the truck drivable switched
back to the camero bin and all was well. During one of the bin changes I
accidentally changed the bit for the cylinder type ( TPI ) and when we started
the truck get error 41 ( I may be wrong , was cylinder select error though
) I did not know the prom pac and the bin interacted. This has been such a great
learning experience.... gotta go meeting in about 10 minutes. Take care and hope
to hear from you soon.</SPAN></FONT></DIV>
<DIV><FONT color=#0000ff face=Arial size=2><SPAN
class=069195115-10082000></SPAN></FONT> </DIV>
<P><FONT color=#0000ff face=Arial size=2><SPAN
class=069195115-10082000>Regards</SPAN></FONT></P>
<P><FONT color=#0000ff face=Arial size=2><SPAN
class=069195115-10082000></SPAN></FONT><FONT size=2><FONT face=Arial>Gorden
<BR></P></FONT></FONT><FONT size=2><FONT face=Arial><FONT color=#0000ff><SPAN
class=069195115-10082000></SPAN></FONT></FONT></FONT>
<P><FONT size=2><FONT face=Arial><FONT color=#0000ff><SPAN
class=069195115-10082000>Or</SPAN></FONT></FONT><FONT face=Tahoma></FONT><FONT
size=2>iginal Message-----<BR><B>From:</B> Bruce Plecan
[mailto:nacelp@bright.net]<BR><B>Sent:</B> Wednesday, August 09, 2000 7:49
PM<BR><B>To:</B> gmecm@diy-efi.org<BR><B>Subject:</B> Re: ECM calibrations for
upgraded Xfire<BR><BR></P></FONT>
<BLOCKQUOTE
style="BORDER-LEFT: #0000ff 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px; PADDING-LEFT: 5px"></FONT>
<DIV><FONT size=2>Turn off that awful script / coloring.</FONT></DIV>
<DIV><FONT size=2>I've run a 13.7 with a cross fire.</FONT></DIV>
<DIV><FONT size=2>Try reading tuning docs (at the FTP), and programming
101.</FONT></DIV>
<DIV><FONT size=2>For a combo like that, you'll need to do your own chip, and
just start with a stock one or what ever ya bought from them.</FONT></DIV>
<DIV><FONT size=2>Some major (yet non critical) intake porting needs
done</FONT></DIV>
<DIV><FONT size=2>Grumpy</FONT></DIV>
<DIV> </DIV>
<DIV> </DIV>
<BLOCKQUOTE
style="BORDER-LEFT: #000000 2px solid; 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:surrexi2@home.com"; title=surrexi2@home.com>Dominic
Sorresso</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, August 09, 2000 10:30
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> ECM calibrations for upgraded
Xfire</DIV>
<DIV><BR></DIV>
<DIV><FONT color=#0000ff><EM>Hi,</EM></FONT></DIV>
<DIV> </DIV>
<DIV><FONT color=#0000ff><EM>I am new to your forum but it was strongly
suggested by a member of the Xfire forum that I join.</EM></FONT></DIV>
<DIV><FONT color=#0000ff><EM>I recently "upgraded" my 84 Vette Xfire with a
Comp Cam hyd roller 211/218 degree with .488/495 lift at 112 degree lobe
separation. I also upgraded the heads to the new </EM></FONT></DIV>
<DIV><FONT color=#0000ff><EM>Trick Flow 23 degree aluminum heads. Also have
upgraded ECM and TBI units to Turbo City </EM></FONT></DIV>
<DIV><FONT color=#0000ff><EM>systems ie 7747 ECM. I also have Extrude Honed
manifold. On a 95 degree day, car ran a 14.3 at 99.7mph and pulled 253
hp@4600rpm/307 lbft@4200rpm at the rear wheels on chassis dyno. This was
with stock configuration chip. I am interested in knowing if anyone has a
bin file for a combination similar to this. I don't doubt that knock Sensor
was causing retard of timing since power went south after 4600rpm. I
have a Needhams EMP-10 burner and would be interested in mainly
suggested fuel and timing calibrations. I believe it is running slightly
rich especially at cold idle strartup and would also like to address
dis/engagement of 4+3 OD unit at higher speeds.</EM></FONT></DIV>
<DIV> </DIV>
<DIV><FONT color=#0000ff><EM>Thanks for your help,</EM></FONT></DIV>
<DIV> </DIV>
<DIV><FONT color=#0000ff><EM>Dominic</EM></FONT></DIV>
<DIV><EM><FONT color=#0000ff><A
href="mailto:surrexi2@home.com";>surrexi2@home.com</A><BR></FONT></EM></DIV></BLOCKQUOTE></BLOCKQUOTE></BODY></HTML>
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