165-730 conversion was 165 to late MAF

[Bruce Plecan]

----- Original Message -----
From: Mike Rolica <mrolica at meridian-mag.com>
To: <gmecm at efi332.eng.ohio-state.edu>
Sent: Monday, November 29, 1999 1:37 PM
Subject: RE: 165-730 conversion was 165 to late MAF

Hmm, don't ya just hate fee advise <g>.   Seriouly glad it worked out that
well/easy.
Grumpy


| 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
| | >         |
| |
|