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| ECM upgrade (1227730) for stock 2.8 (Page 103/107) |
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chetw77cruiser
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AUG 14, 08:19 PM
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I do not remember it displaying anything out of the ordinary. Granted that was a few years ago.
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TheKingOfBattle
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AUG 15, 01:03 AM
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| quote | Originally posted by chetw77cruiser:
Keep in mind that this was a "Few" years ago (2003) and I no longer have the car. I experimented on a 1991 corsica engine that was in a "project car" and had a manual trans and no A/C. With that said, the engine originally came with the 1227730 and $A1 code. I was in the middle of my tuning days and wanted to try something different. I used the $8D code because I was familiar with it. After a bit of experimenting and reviewing other factory bin's, I finally found the settings that allowed me to use the $8D code with DIS. Needless to say, the spark settings to allow this was the easy part. Fuel, spark, and other tables/settings had to be transferred or modified to get this mutt to run well. I only ran this for about a year before the car was retired do to a significant fender bender. During that time, I had no problems running the DIS with the code that was not intended for such use. The dwell code between both the $A1 and the $8D code function about the same, no settings need to be modified or to be found in the $8D. As far as the ecu in concerned, it is still controlling a single coil where the DIS module takes car of all the switching.
Here is what I changed to get this to work:
Spark Advance Initial from 5.98 to 59.77 for DIS
Spark Advance Max from 41.84 to -9.84 for DIS
Spark Retard Max from -3.87 to -69.96 for DIS
These may not make sense to most, but they do work.
If anyone is interested, PM/email me for a copy of the files.
Chet W.
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Thanks for the info, Chet.
BTW, I dig the Dr. Strangelove avatar.[This message has been edited by TheKingOfBattle (edited 08-15-2013).]
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chetw77cruiser
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AUG 15, 03:49 PM
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You are welcome.
I also had one of General Buck Turgidson as well. A fun movie if you catch all the subtleties and innuendos.
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chetw77cruiser
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AUG 19, 10:20 PM
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Mr Darth, are you on the lookout for other ecu/pcm computers that would make a worth while replacement for a swap? On that comes to mind is the 16197427 PCM. It originally comes from a TBI/CPI injection system used in GM pickup trucks in the early to mid 90's. With a bit of ingenuity, this pcm could be adapted to many different applications and transmissions, possibly the 4T65E. I will do a bit more research and report back later.
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sleevePAPA
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AUG 19, 10:45 PM
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Darth Fiero
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AUG 30, 01:49 AM
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| quote | Originally posted by chetw77cruiser:
Mr Darth, are you on the lookout for other ecu/pcm computers that would make a worth while replacement for a swap? On that comes to mind is the 16197427 PCM. It originally comes from a TBI/CPI injection system used in GM pickup trucks in the early to mid 90's. With a bit of ingenuity, this pcm could be adapted to many different applications and transmissions, possibly the 4T65E. I will do a bit more research and report back later. |
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I have two points I will make while responding to your query...
1) I have shifted my primary focus to OBD2 systems at this point. That doesn't mean I'm done working on OBD1 stuff. I will continue to and always plan to support the systems I've always supported but I'm just not going to invest much more time in trying to use different OBD1 systems on applications that they were never used with from the factory. I just don't have time to do much with the older stuff when I'm trying to keep up with the brand new systems being rolled off the assembly line at GM these days AND trying to stay on top of the "earlier" OBD2 systems and using those on applications they were never meant to.
2) I am very familiar with the PCMs that run the $E6, $0E, and $0D code masks (CPI/TBI trucks with 4L60-E or 4L80-E transmissions). I have tuned many stock, lightly modded, and even some very heavily modded truck engines that used these computers. I can tell you that these computers (more precisely, the OS's run in them) have some nasty limitations built in which can be a real pain in the butt to work with when you are trying to tune highly modified engines (with big cams, big injectors, etc). They have proven to be MUCH MORE DIFFICULT to work with for such applications compared to how much less work it takes to tune the 1227747 $42 ECMs and 1227730 $8D ECMs for a similar engine build.
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Darth Fiero
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AUG 30, 01:51 AM
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I wish I had more time. But I'm struggling to post a handful of times per week only on this forum as it is.
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unboundmo
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OCT 10, 07:04 PM
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hi everyone... Great write ups and info from you all.. I'm on page 8 so far but too eager to read all before picking all the components.. Sorry if this has been asked.. And a bump to the top for the great thread!
What I'm running...
3.4L p/r out of a 95 camaro - 88 Fiero everything else
Forged pistons and rods - .030 over , 9:25.1 comp
260/260 comp cam
1.6 Roller rockers (Crane gold series)
All balanced and ported
Bored throttlebody 56mm instead of the 52mm
Cold air intake
Holley fuel regulator
17lb injectors
282 Muncie 5 speed
I've been to the junk yard .... What I have now
I found a 16198262 ECM out of a 92 3.1L firebird ( it was an automatic and mines a stick... But I thought I read somewhere that it didn't matter? ), the digital EGR -plus the base plate assembly.. and the knock sensor... The mem cal chip is there also.. I cut off all the pigtails to help make new harnesses. I have a spare 85 Fiero ECM and would like to do the plug a play like I read about. Eventually I would like a turbo, hint the 85 ECM for the knock sensor... But as I've been reading, even though it sounds like the 7749 is best.. we can still get away with the 7730 and/or the one I found..?
I also want to go coil pack , DIS style with no distributor... So, I also have
Out of a 2001 grand am 3400, the 3 coil packs and the mount; try to use it some how, fab something.. Anyway, I have the crank sensor from the side of the block (I'm not sure which one 7x or the 24x- or know which does what)... But I didn't get the crank sensor behind the crank pulley.. I have a puller but not on me at the time when in the yard.., but Is that one even necessary - behind the pulley?... And will it work on the Fiero timing cover "88"? I also have the distributor plug with the oil pump gear attached. Also.. Do I need a cam sensor too? Are there spots in the 3.4L p/r block to put all of this.. Any pictures out there showing there swap and the sensors?
So basically I'm asking.. What else do I need? Do i have it right or the right track?.... Anything is much appreciated.. Thanks.. I know to have the chip burned but I'm not there yet.. Ill go with sinister on that one.. Thanks all!
------------------[This message has been edited by unboundmo (edited 10-14-2013).]
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unboundmo
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OCT 13, 10:41 PM
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| quote | Originally posted by Capt Fiero:
There is at least one running.
Here is an engine bay shot of his car at the last meeting. He kinda cheated though, (: He did a Camaro 3.4 V6 swap a couple years ago and did the 7730 swap a few months ago. So this is what he has now.
Kinda cool to see a Fiero looking motor without a distributor shaft. He will be re-locating the coils at a later date.
If you want to see a few more pics. Just scroll down about 3/4 of the page to the car pics.
http://www.westcoastfieros....sts.asp?TID=381&PN=1 |
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I came across this pic on pg 10... I was thinking This is my plan... But what area would be best for the coils..mentioned? I was going to put them here also. I read that they were going to move them. i wonder if they did?
For heat, I was planning to ceramic coat and wrap some new pipes plus the heat shields.. to keep things cool. It's not my daily driver so only blue skies it sees[This message has been edited by unboundmo (edited 10-13-2013).]
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unboundmo
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OCT 13, 11:17 PM
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| quote | Originally posted by Darth Fiero:
DIS is simply more percise and accurate than distributor-based ignition timing. The DIS still uses an ignition module; it mounts under the coils.
As mentioned earlier, you CANNOT put DIS directly onto a stock Fiero 2.8 because there are no provisions for it. There are some aftermarket companies out there that make external crank triggers that mount on the balancer so you can run DIS. One that comes to mind is TCE; they can be reached via email at tce@woh.rr.com . Don't know if one of their setups is 100% compatible with the Fiero 2.8 and assy belt drive or not, so you will have to talk to them about it.. |
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Shoot! .... Dead give-a-way of a different block for smog reasons.. Hope they don't pick up on that.. I like the comment about some companies out there that are making external conversions.. I could use that for the excuse and how so..  [This message has been edited by unboundmo (edited 10-13-2013).]
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