165-730 conversion was 165 to late MAF

[Mike Rolica]

Speaking of 730 conversions, Got the truck converted.  Using the low octane
fuel tables as well.  Can run 87 octane  or 104.  Starts much quicker..No
more windmilling. Got prom reader/burner eraser and about 500 27c128's and
~200 27c256's and 300 27c512's all 70ns.  They were free, aunt has satellite
dish bus.  Used to use them in descramblers.!  I was putting prom in
backwards ( directions show from the bottom, I was doing it from the top
(CSH is on order)  Didn't figure it out till I was at Bruces place, seen how
it was done and just tried it at home.  Works good!  For memcal, I'm using
parts I ripped out of old PLC cabinets at work,  (got the idea of adapter
from Bruce too....Thanks!) and the old chip sawed in half with a prom socket
on it.  Hey Bruce... fits in ECM without ripping it apart <G>.

Gotta say the map is better than maf.  Probably got another 30-40hp from
3000-6000rpm and even better throttle response.  
  Still have some work to do on the fuel/spark tables, but will have to wait
until the track opens.  Besides, it is snowing like hell right now, have 6".
Went out for lunch, could barely move in 4x4.  

Conclusion: Almost 400hp, 2800 stall and snow = slide ride, no good for crap
even in 4x4.  Worst thing is sometimes front slides sometimes back, some
times both  and sometimes both in opp directions which means big pinner.
Mike Rolica
Meridian Magnesium Products
Strathroy, Ont 
Ext. 260


	-----Original Message-----
	From:	Bruce Plecan [SMTP:nacelp at bright.net]
	Sent:	Monday, November 29, 1999 12:43 PM
	To:	gmecm at efi332.eng.ohio-state.edu
	Subject:	Re: 165 to late MAF


	----- Original Message -----
	From: gabe <gellett at earthlink.net>
	Subject: Re: 165 to late MAF

	For the work your going to do, why not just set up to a 1227730, and
have a
	much newer system??.  I'd really recommend that.  In the future the
MAP
	sensors are cheaper, and you can find them in the junkyards.
	Grumpy


	| On an '870 ECU for an '85 5.0 TPI, does the piggyback module for
the MAF
	do
	| anything (other than burnoff) that I cannot do with relays myself
(power
	on and
	| off the MAF).
	|
	| I guess what I am trying to ask is:  What, exactly, are the
piggyback
	module's
	| functions?
	|
	| I am currently powering the MAF with a Bosch SPDT relay and
sending the
	MAF
	| signal straight into the ECM, is there anything wrong with doing
it this
	way,
	| other than I lose the automatic burnoff function?  I do not have
the
	piggyback
	| module and cannot convert to my '165 ECU due to not having the
correct
	Memcal
	| located yet.
	|
	| Gabe
	|
	| Mike Rolica wrote:
	|
	| > Only for the early 85-86 models.  Then they went to voltage on
87-1990.
	Had
	| > lots of trouble with the early freq mafs.  That is why BUA has a
bit for
	| > freq or analog.
	| > Mike Rolica
	| > Meridian Magnesium Products
	| > Strathroy, Ont
	| > Ext. 260
	| >
	| >         -----Original Message-----
	| >         From:   Bruce Plecan [SMTP:nacelp at bright.net]
	| >         Sent:   Saturday, November 27, 1999 8:35 PM
	| >         To:     gmecm at efi332.eng.ohio-state.edu
	| >         Subject:        Re: 165 to late MAF
	| >
	| >         Going by what I read in the ecmguy's HAC the 165 MAF is
	Frequency.
	| >         Starting at 069A (ref BUA), we have the Ld var for
scaling LV8
	Scale
	| >         Factors,
	| >         and just before that we have MAF frquency 34-150 Hz,
sounds like
	| > frquency to
	| >         me.
	| >         Grumpy
	| >
	| >         | Waaait a min, how are you getting around that the new
GM MAF
	is
	| > frequency,
	| >         | and the old is voltage? Build a translator box for
freq to
	volt?
	| >         | At least with the Porsche 928 MAF it wouldn't need any
	| > translation...
	| >         | Maybe one of the code wizards can rewrite the code so
it can
	use a
	| > freq
	| >         MAF?
	| >         | I'm awaiting this as I want to start modifing my 89
and one of
	the
	| > first
	| >         | things that I want to upgrade is the entire air inlet
tract
	| > (Firebird).
	| >         | Tom
	| >         |
	|