mail order prom
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mail order prom
Ugg. Why are the guys on corvette forum SOOOOO ******* stupid.. You can't even make a suggestion to these clowns without getting flamed and told "PCMFORLESS = GOD"..
retards..
-- Joe
retards..
-- Joe
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Car: 1983 G20 Chevy
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Re: mail order prom
People have been tuning the 411 LS1 PCM MAF-less for some time now. I don't agree with it though. The MAF sensor is not a restriction, so why does it have to go? The MAF adapts to varying weather conditions more readily than a MAP system does.
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Re: mail order prom
MAP isn't so good with big cams, MAF isn't so good with airflow due to coding problems. The LS1 is not a thirdgen or a C4. apples and oranges..
If I could Repin my harness to use an LT1 computer & hei dizzy, I would.
-- Joe
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Re: mail order prom
I believe the MAF element is costly to replace? just a guess. If one increases the throttle body size one would need to buy a larger element? is that big bucks?
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why is MAF harder to tune?
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why is MAF harder to tune?
Last edited by Ronny; 03-27-2007 at 11:24 AM. Reason: Automerged Doublepost
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Car: 1983 G20 Chevy
Engine: 305 TPI
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Axle/Gears: 14 bolt with 3.07 gears
Re: mail order prom
MAP is cheaper, easier to tune. MAF is a little better with big cams.
MAP isn't so good with big cams, MAF isn't so good with airflow due to coding problems. The LS1 is not a thirdgen or a C4. apples and oranges..
If I could Repin my harness to use an LT1 computer & hei dizzy, I would.
-- Joe
MAP isn't so good with big cams, MAF isn't so good with airflow due to coding problems. The LS1 is not a thirdgen or a C4. apples and oranges..
If I could Repin my harness to use an LT1 computer & hei dizzy, I would.
-- Joe
My 85mm GM MAF was $50 shipped on Ebay.
BTW, you CAN run the 411 PCM(LS1 PCM) on a 2002 Vortec 350 Van tune with the Vortec 350 distributer and crank sensor. I have run a TPI 305/4L60E combination with the 411 PCM from a Vortec van.
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Re: mail order prom
-- Joe
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A bunch of MAF tables vs one flat VE table, for one.
-- Joe
Last edited by anesthes; 03-27-2007 at 11:44 AM. Reason: Automerged Doublepost
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#8
Re: mail order prom
That part is easy. I've already compared my 7730 schematic against and LT1 and the circuitry/color coding is extremely similar.
That's the part that takes a little creativity. Though I believe there are people working on such a conversion- sticking Opti guts into an HEI distributor. I forget who it was though...
That's the part that takes a little creativity. Though I believe there are people working on such a conversion- sticking Opti guts into an HEI distributor. I forget who it was though...
#9
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Car: 1983 G20 Chevy
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Re: mail order prom
That part is easy. I've already compared my 7730 schematic against and LT1 and the circuitry/color coding is extremely similar.
That's the part that takes a little creativity. Though I believe there are people working on such a conversion- sticking Opti guts into an HEI distributor. I forget who it was though...
That's the part that takes a little creativity. Though I believe there are people working on such a conversion- sticking Opti guts into an HEI distributor. I forget who it was though...
The Vortec distributer will drop right into a conventional small block chevy.
Attached are some pictures of S10Wildsides TPI Vortec setup. I ran mine using a 2004 Astro Van harness and PCM with a few added wires for the V8 injectors and the PCM reflashed with a 2002 Express 305 tune (1994 G10 305 TPI/1997 4L60E).
Last edited by Fast355; 03-27-2007 at 02:49 PM.
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Car: 1983 G20 Chevy
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Re: mail order prom
The 411 PCM (Repinned the harness) that runs my 1998 Express pulls down 20 mpg in that 6,100 lbs beast.
I plan to add the alcohol sensor to the tank and run the E85 programming in it soon in order to run E85.
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Car: 1990 Corvette ZR-1
Engine: LT5
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Re: mail order prom
I too would liek to run the LT1 PCM mainly to keep the CCM happy..
As for MAP/MAF Y-cars:
84- MAP
85-89 MAF
90-93 MAP (90-91 L98, 92-93 LT1)
94-96 MAF & MAP (96 being OBD2 of course)
#13
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Transmission: T5, Zf6, 4L60E
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Re: mail order prom
My point is WHY?
The Vortec distributer will drop right into a conventional small block chevy.
Attached are some pictures of S10Wildsides TPI Vortec setup. I ran mine using a 2004 Astro Van harness and PCM with a few added wires for the V8 injectors and the PCM reflashed with a 2002 Express 305 tune (1994 G10 305 TPI/1997 4L60E).
The Vortec distributer will drop right into a conventional small block chevy.
Attached are some pictures of S10Wildsides TPI Vortec setup. I ran mine using a 2004 Astro Van harness and PCM with a few added wires for the V8 injectors and the PCM reflashed with a 2002 Express 305 tune (1994 G10 305 TPI/1997 4L60E).
-- Joe
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Car: '88 Formula, '94 Corvette, '95 Bird
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Transmission: T5, Zf6, 4L60E
Axle/Gears: 3.42, Dana44 3.45, 3.23
Re: mail order prom
If you can tell me how to get it to work with an LT1 ecm I might be interested. LS1 ecm won't do much for me right now I don't think.
-- Joe
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Re: mail order prom
Yeah I would be interested as well..
#17
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Re: mail order prom
There is surely limitations with the MAP sensor and big cams. My cam has soo much overlap the resolution is horrible for tuning. I now see why a lot of folks like ski_dwn_it like MAF. Though MAF in the thirdgen/c4 form blows.
Say an ECM out of a late LT1 with both MAF and MAP would be great if it could run a HEI dizzy. The Sequential injection would be nice too as it has the cyl trim offsets which would benefit the minirams uneven air distribution.
Maybe I should call PCMFORLES. According to CF, he can do anything!!!!
-- Joe
Say an ECM out of a late LT1 with both MAF and MAP would be great if it could run a HEI dizzy. The Sequential injection would be nice too as it has the cyl trim offsets which would benefit the minirams uneven air distribution.
Maybe I should call PCMFORLES. According to CF, he can do anything!!!!
-- Joe
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Re: mail order prom
This is why the Scan and tune board at CF is slow.. If I could run my vette off of an LT1 ECM I have the correct 92 CCM for it, then I get all the cool extra features.. I have even thought of building an LT1 as my next motor and just use my Miniram for the intake.. then use the Opti for the timing signals and get a delteq box for the LS1 coils.. Now that would be nice..
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Transmission: T5, Zf6, 4L60E
Axle/Gears: 3.42, Dana44 3.45, 3.23
Re: mail order prom
This is why the Scan and tune board at CF is slow.. If I could run my vette off of an LT1 ECM I have the correct 92 CCM for it, then I get all the cool extra features.. I have even thought of building an LT1 as my next motor and just use my Miniram for the intake.. then use the Opti for the timing signals and get a delteq box for the LS1 coils.. Now that would be nice..
I need to have a chat with you sometime about dash stuff. The atari dash has to go next. Seems like your quite a few years ahead of me at putting these cars where I want mine.
-- Joe
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Re: mail order prom
Hrmm.. Sounds sweet. CNP would be nice. Engine bay space kinda sucks though on our cars. The 92-94 ECM is prom based, but the 95-96 is flash based huh? I love tuning MAP but i'd like an additional maf for airflow calc and off TPS routines. The LT1 code is nice stuff though, looking at the options and tables.
I need to have a chat with you sometime about dash stuff. The atari dash has to go next. Seems like your quite a few years ahead of me at putting these cars where I want mine.
-- Joe
I need to have a chat with you sometime about dash stuff. The atari dash has to go next. Seems like your quite a few years ahead of me at putting these cars where I want mine.
-- Joe
Anyway, I figured I could do the 92 LT1 ECM, and deal with the PROM Based system along with the MAP, then get some of the other features that the LT1 system had, Now if the 92 CCM I have will work with the 94 ECM, then I would got that route, but it is all the matter of getting it to work with the GEN 1 Distributor set-up.. I even have a F.A.S.T. eDIST to run coil packs from , but I don't think it would work with the LT1 ECM..
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Car: '88 Formula, '94 Corvette, '95 Bird
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Transmission: T5, Zf6, 4L60E
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Re: mail order prom
Let me know when you are ready on the dash stuff, I have a ton of info. Yeah MAF/MAP would be nice, but when you get to the 90-newer you have to deal with the CCM, I have a 91 CCM in my car and a 92 CCM on the shelf, both were bought new and i had them programmed (granted the 92 has about 5K less miles as I programmed it first to find out I had Serial Issues with the 91 ECM. (data was not what the 92 CCM wanted)
Anyway, I figured I could do the 92 LT1 ECM, and deal with the PROM Based system along with the MAP, then get some of the other features that the LT1 system had, Now if the 92 CCM I have will work with the 94 ECM, then I would got that route, but it is all the matter of getting it to work with the GEN 1 Distributor set-up.. I even have a F.A.S.T. eDIST to run coil packs from , but I don't think it would work with the LT1 ECM..
Anyway, I figured I could do the 92 LT1 ECM, and deal with the PROM Based system along with the MAP, then get some of the other features that the LT1 system had, Now if the 92 CCM I have will work with the 94 ECM, then I would got that route, but it is all the matter of getting it to work with the GEN 1 Distributor set-up.. I even have a F.A.S.T. eDIST to run coil packs from , but I don't think it would work with the LT1 ECM..
My digital dash sucks. The tach barely works, digits are missing, etc. I'd love to transplant a 90+ dash if it's a sorta direct swap....
-- Joe
#22
Re: mail order prom
The 8D ccm code is in the hac.
Didn't look too difficult, but I don't have a ccm so I didn't look too hard.
At a glance, it looked like a selected ram dump.
If someone comes up with a junk opti, I'd be glad to work on the hei guts swap. We've got a mill at work and since I'm there 6-7 days a week.....
Didn't look too difficult, but I don't have a ccm so I didn't look too hard.
At a glance, it looked like a selected ram dump.
If someone comes up with a junk opti, I'd be glad to work on the hei guts swap. We've got a mill at work and since I'm there 6-7 days a week.....
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Re: mail order prom
The 8D ccm code is in the hac.
Didn't look too difficult, but I don't have a ccm so I didn't look too hard.
At a glance, it looked like a selected ram dump.
If someone comes up with a junk opti, I'd be glad to work on the hei guts swap. We've got a mill at work and since I'm there 6-7 days a week.....
Didn't look too difficult, but I don't have a ccm so I didn't look too hard.
At a glance, it looked like a selected ram dump.
If someone comes up with a junk opti, I'd be glad to work on the hei guts swap. We've got a mill at work and since I'm there 6-7 days a week.....
Joe,
the CCM (Central Control Module) is the master on the serial bus ont he 90-later cars, it controls the LCD display on the dash as well as the some AC stuff and a few other pieces, it is also referred to as a BCM (body control module)
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Re: mail order prom
What I would be happy with is getting the 8D code to work with the 92 CCM..
Joe,
the CCM (Central Control Module) is the master on the serial bus ont he 90-later cars, it controls the LCD display on the dash as well as the some AC stuff and a few other pieces, it is also referred to as a BCM (body control module)
Joe,
the CCM (Central Control Module) is the master on the serial bus ont he 90-later cars, it controls the LCD display on the dash as well as the some AC stuff and a few other pieces, it is also referred to as a BCM (body control module)
Funny, I recall having a conversation with the guy next door (shop next door) about a '96 vette a few months ago. he said it wouldn't start, and had a bad "body control module".. I thought he was crazy and just was like "oh yeah, wow, cool, glad you fixed it".. haha. i feel dumb now
-- Joe
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Re: mail order prom
Im dumb and didn't know that. Does my '87 have a CCM/BCM hidden somewhere? Or were those functions run by the ECM and are now lost?
Funny, I recall having a conversation with the guy next door (shop next door) about a '96 vette a few months ago. he said it wouldn't start, and had a bad "body control module".. I thought he was crazy and just was like "oh yeah, wow, cool, glad you fixed it".. haha. i feel dumb now
-- Joe
Funny, I recall having a conversation with the guy next door (shop next door) about a '96 vette a few months ago. he said it wouldn't start, and had a bad "body control module".. I thought he was crazy and just was like "oh yeah, wow, cool, glad you fixed it".. haha. i feel dumb now
-- Joe
Don't feel dumb, but if you forgo a CCM in a dash conversion you need something else for the dash cluster (or to replace the Fuel gauge and speedo in the LCD)
#26
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Car: '88 Formula, '94 Corvette, '95 Bird
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Transmission: T5, Zf6, 4L60E
Axle/Gears: 3.42, Dana44 3.45, 3.23
Re: mail order prom
No 84-89 had no CCM/BCM, it is standalone like the F-body. the CCM also controls, the OEM Alarm, VATS, Dome light timer, stuff like that.
Don't feel dumb, but if you forgo a CCM in a dash conversion you need something else for the dash cluster (or to replace the Fuel gauge and speedo in the LCD)
Don't feel dumb, but if you forgo a CCM in a dash conversion you need something else for the dash cluster (or to replace the Fuel gauge and speedo in the LCD)
-- Joe
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