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Re: ECM calibrations for upgraded Xfire
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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 -----=20
From: Dominic Sorresso=20
To: gmecm@diy-efi.org=20
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=20
Trick Flow 23 degree aluminum heads. Also have upgraded ECM and TBI =
units to Turbo City=20
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
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<DIV><FONT size=3D2>Turn off that awful script / coloring.</FONT></DIV>
<DIV><FONT size=3D2>I've run a 13.7 with a cross fire.</FONT></DIV>
<DIV><FONT size=3D2>Try reading tuning docs (at the FTP), and =
programming=20
101.</FONT></DIV>
<DIV><FONT size=3D2>For a combo like that, you'll need to do your own =
chip, and=20
just start with a stock one or what ever ya bought from =
them.</FONT></DIV>
<DIV><FONT size=3D2>Some major (yet non critical) intake porting needs=20
done</FONT></DIV>
<DIV><FONT size=3D2>Grumpy</FONT></DIV>
<DIV> </DIV>
<DIV> </DIV>
<BLOCKQUOTE=20
style=3D"BORDER-LEFT: #000000 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: =
0px; PADDING-LEFT: 5px; PADDING-RIGHT: 0px">
<DIV style=3D"FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV=20
style=3D"BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B>=20
<A href=3D"mailto:surrexi2@home.com"; title=3Dsurrexi2@home.com>Dominic =
Sorresso</A> </DIV>
<DIV style=3D"FONT: 10pt arial"><B>To:</B> <A =
href=3D"mailto:gmecm@diy-efi.org"=20
title=3Dgmecm@diy-efi.org>gmecm@diy-efi.org</A> </DIV>
<DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Wednesday, August 09, =
2000 10:30=20
PM</DIV>
<DIV style=3D"FONT: 10pt arial"><B>Subject:</B> ECM calibrations for =
upgraded=20
Xfire</DIV>
<DIV><BR></DIV>
<DIV><FONT color=3D#0000ff><EM>Hi,</EM></FONT></DIV>
<DIV> </DIV>
<DIV><FONT color=3D#0000ff><EM>I am new to your forum but it was =
strongly=20
suggested by a member of the Xfire forum that I =
join.</EM></FONT></DIV>
<DIV><FONT color=3D#0000ff><EM>I recently "upgraded" my 84 Vette Xfire =
with a=20
Comp Cam hyd roller 211/218 degree with .488/495 lift at 112 degree =
lobe=20
separation. I also upgraded the heads to the new =
</EM></FONT></DIV>
<DIV><FONT color=3D#0000ff><EM>Trick Flow 23 degree aluminum heads. =
Also have=20
upgraded ECM and TBI units to Turbo City </EM></FONT></DIV>
<DIV><FONT color=3D#0000ff><EM>systems ie 7747 ECM. I also have =
Extrude Honed=20
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=20
stock configuration chip. I am interested in knowing if anyone has a =
bin file=20
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=20
Needhams EMP-10 burner and would be interested in mainly =
suggested fuel=20
and timing calibrations. I believe it is running slightly rich =
especially at=20
cold idle strartup and would also like to address dis/engagement of =
4+3 OD=20
unit at higher speeds.</EM></FONT></DIV>
<DIV> </DIV>
<DIV><FONT color=3D#0000ff><EM>Thanks for your help,</EM></FONT></DIV>
<DIV> </DIV>
<DIV><FONT color=3D#0000ff><EM>Dominic</EM></FONT></DIV>
<DIV><EM><FONT color=3D#0000ff><A=20
=
href=3D"mailto:surrexi2@home.com";>surrexi2@home.com</A><BR></FONT></EM></=
DIV></BLOCKQUOTE></BODY></HTML>
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