Is my process correct?
Thread Starter
Joined: Jul 1999
Posts: 2,926
Likes: 5
From: Tucson, Arizona USA
Car: 1987 Z28 Convertible
Engine: 305 TPI
Transmission: 5-speed
Is my process correct?
I will be converting from MAF to SD very soon. I'm configuring three wiring harnesses to be plug & play pieces:
1) ECM - Two connectors to three with repinning (obviously),
2) ESC - Gutted a non-functioning unit and will splice the proper terminals together, along with a resistor so I can retain the 165 knock sensor within the body of this module. When I convert from MAF to SD (or vice versa), I'll have to swap a functioning module with the "SD ESC" module!!
3) MAF - A 5-pin MAF male connector to a 3-pin MAP connector.
I have the 730 ECM and AUJP EPROM (92 350, auto), a 1-bar MAP and a 3-bar MAP. The first step is to install my three plug & play harnesses with the 1-bar MAP. Then I'll tweak the EPROM as necessary. Once the engine is running well, I'll burn another EPROM for the 3-bar.
Here are my questions:
1) Is this a logical approach?
2) Am I wasting my time with the stock programming and 1-bar when I know I'll be going to the 3-bar?
3) Where can I obtain a bin file for a 3-bar? Or is it simpler experimenting from scratch?
4) What has everyone else done about the VSS? The tech article on this site does not connect the VSS. (I didn't think that was possible?) I'm thinking go with Dakota Digital's SGI-5 to double the pulses (the 165 uses 2,000 ppm, whereas the 730 uses 4,000, I believe).
And most importantly:
5) Is my assumption correct that I can use the 730 with a 3-bar, as long as the EPROM is burned for the 3-bar (with ~1/3 resolution in vacuum)?
Any advise would be appreciated as I've never done this before.
1) ECM - Two connectors to three with repinning (obviously),
2) ESC - Gutted a non-functioning unit and will splice the proper terminals together, along with a resistor so I can retain the 165 knock sensor within the body of this module. When I convert from MAF to SD (or vice versa), I'll have to swap a functioning module with the "SD ESC" module!!
3) MAF - A 5-pin MAF male connector to a 3-pin MAP connector.
I have the 730 ECM and AUJP EPROM (92 350, auto), a 1-bar MAP and a 3-bar MAP. The first step is to install my three plug & play harnesses with the 1-bar MAP. Then I'll tweak the EPROM as necessary. Once the engine is running well, I'll burn another EPROM for the 3-bar.
Here are my questions:
1) Is this a logical approach?
2) Am I wasting my time with the stock programming and 1-bar when I know I'll be going to the 3-bar?
3) Where can I obtain a bin file for a 3-bar? Or is it simpler experimenting from scratch?
4) What has everyone else done about the VSS? The tech article on this site does not connect the VSS. (I didn't think that was possible?) I'm thinking go with Dakota Digital's SGI-5 to double the pulses (the 165 uses 2,000 ppm, whereas the 730 uses 4,000, I believe).
And most importantly:
5) Is my assumption correct that I can use the 730 with a 3-bar, as long as the EPROM is burned for the 3-bar (with ~1/3 resolution in vacuum)?
Any advise would be appreciated as I've never done this before.
Last edited by Willie; Oct 4, 2003 at 06:01 PM.
Supreme Member
Joined: Jun 2000
Posts: 7,554
Likes: 1
From: In reality
Car: An Ol Buick
Engine: Vsick
Transmission: Janis Tranny Yank Converter
Using the Syclone code gets you the 2 bar option.
There is no genuine 3 bar code available from GM. There is a patch that the Syclone guys have to allow using a 3 bar map. Brain Greene is the one you need to talk to about that.
If your going to go boosted might as well just work towards that end, rather then do things twice. Thou, experience in doing prom stuff is never wasted.
There is no genuine 3 bar code available from GM. There is a patch that the Syclone guys have to allow using a 3 bar map. Brain Greene is the one you need to talk to about that.
If your going to go boosted might as well just work towards that end, rather then do things twice. Thou, experience in doing prom stuff is never wasted.
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