RE: 89 F-body ECU file = 89 Y-body ECU file?

[Mike Rolica <mrolica@meridian-mag.com>]

Ok  if you want me to elaborate....  Map sensors are cheap..... maf are
expensive.... Really expensive.  On a rump rump cam maf sensors give erratic
readings  more so than map.. map you can dampen.  On mod engine as mine, maf
would only read to about 2800rpm where it maxed out (255).  Map is
unlimited.  Maf is bulky and takes up room in intake track.
For emp evidence.   Maf @ 400cfm there is a press drop of 4 in h2o.  so
fairly restrictive @ 500cfm pd is 12.5in h2o. (This is a gutted and ported
maf)   A stock maf should be worse.
		From what I've seen on the list, it is not yet possible or
it is really difficult and expensive to enable to read past 255.  Your diff
in times, may be due to what you said earlier "...  Though I don't claim to
have a fully tuned '730 bin file yet".   I do, with losa help and advise
from Bruce ;0).  

On a personal note, I find map much easier to work with and understand (may
be due to my background in mech. eng)
Mike Rolica
Meridian Magnesium Products
Strathroy, Ont 
Ext. 260


		-----Original Message-----
		From:	Michael Davis [SMTP:davis@mail.eecis.udel.edu]
		Sent:	Friday, March 10, 2000 11:20 AM
		To:	gmecm@diy-efi.org
		Subject:	Re: 89 F-body ECU file = 89 Y-body ECU file?



		Don't be so fast to suggest unless you've gotten further
emperical
		data to support it...  Though I don't claim to have a fully
tuned
		'730 bin file yet, I tested the '730 and '165 systems head
to head
		last weekend at the track and the '165 was constitantly 0.1
second
		faster in the 1/4 mile on my car..  (Est. 400 gross HP)

		(I have built an adaptor cable that routes the '165 OEM
harness to a
		 '730, and my car is equiped with both MAP and MAF sensors
and dual
		 knock sensors...
			http://www.eecis.udel.edu/~davis/z28/ecm_swap_730/ 
		)

		Quarter-mile runs with the car, each about 15 minutes after
one another..

			1 (MAP) 13.098@105      (let car shift to OD)
			2 (MAP) 13.095@105      (let car shift to OD)
			 3 (MAF) 12.941@105      (kept car in 3rd to
5600rpm)
			 4 (MAF) 13.071@103      (let car shift to OD)
			 5 (MAF) 12.927@106      (kept car in 3rd to
5800rpm)
			6 (MAP) 13.063@105      (kept car in 3rd to 5800rpm)
			7 (MAP) 13.050@105      (kept car in 3rd to 5900rpm)

				
		In message <01BF8A80.695CCE40@amy-and-mike>,Mike rolica
writes:
		>
		>Been there and done that.  The 89 f body and vette 165 bins
are not laid =
		>out the same.  I think1 or 2 tables are but thats about it.
Want some =
		>real improvement... swap to a 730.
		>
	
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