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ECM calibrations for upgraded Xfire
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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 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 Comp=20
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=20
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=20
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 unit=20
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></BODY></HTML>
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