ECM calibrations for upgraded Xfire

[Mike Rolica]

Take what bruce says seriously...he knows his crap when it comes to the
crossfire.....
Burn your own chip.. there is no quick and easy way to get it right., read
programing 101 on the site, get familiar with it, and try small changes at a
time...
Mike Rolica
Plant A,
Magnesium Products Division
Strathroy

(519)-245-4040  Ext. 244



	-----Original Message-----
	From:	Bruce Plecan [SMTP:nacelp at bright.net]
	Sent:	Wednesday, August 09, 2000 11:15 PM
	To:	gmecm at diy-efi.org
	Subject:	Re: ECM calibrations for upgraded Xfire


	Nope, was years ago.
	The info available now, makes my early stuff look premitive.
	If you care to spend the time, you can do a great chip for that car.
	Will take more then a chip to get the full performance out of your
set up.
	You'll need to do 2" butterflies, remove the egr tunnel, increase
the plenum
	volume, different injectors, to get it's full potential.
	Grumpy




	> I have posted using plain text. Do you have a bin file of the one
u used
	for
	> the 13.7 time?
	> Thanks,
	> Dominic

	> From: 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

	> From: Dominic Sorresso
	> 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.


	
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