ECM calibrations for upgraded Xfire

[Bruce Plecan]

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 Sorresso 
  To: gmecm at 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 at 4600rpm/307 lbft at 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 at home.com

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.diy-efi.org/pipermail/gmecm/attachments/20000809/711509d3/attachment.html>