 EFI Parts Numbers, My 73 has 74 parts |
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| billd |
 Sep 22 2005, 08:22 PM
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#1
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Member  Group: Members Posts: 327 Joined: 25-May 05 From: Palo Alto, CA Member No.: 4,145  |
I checked the part numbers on my EFI components against the table on Paul Anders website and discovered that my 73 has 74 EFI components. Specifically my ECU is 039-906-021 (Bosch 0-280-000-044) and my MPS is 0-280-100-043.
Can anyone tell me what this means for performance? I've heard that the 043 MPS doesn't provide WOT enrichment. Is that true? If so, can it be recalibrated to provide better WOT performance? Also, is it worth adding a resistor to the CHT lead? |
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| TravisNeff |
Sep 22 2005, 08:27 PM
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#2
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914 Guru Group: Members Posts: 5,082 Joined: 20-March 03 From: Mesa, AZ Member No.: 447 Region Association: Southwest Region 
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There is a compatability chart on Brad's page for mixing FI components.
ECU / MPS Compatibility Table is what you are looking for |
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| qa1142 |
Sep 22 2005, 08:50 PM
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#3
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Whiplash Group: Members Posts: 1,514 Joined: 1-June 04 From: Lake Zurich, Illinois Member No.: 2,140 |
web site link??
Which Brad?? |
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| JeffBowlsby |
Sep 22 2005, 09:02 PM
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#4
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914 Wiring Harnesses Group: Members Posts: 8,524 Joined: 7-January 03 From: San Ramon CA Member No.: 104 Region Association: None
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As you can guess, the systems are a set of matched components. the components are calibrated to work with each other. Mixing them...all bets are off. No doubt they will work ok to some degree, but they will not be optimal. Because you are restoring this FI system Bill, the best advice is to get everything correct. So...you have a 73 car? Be sure you have all 73 components.
So get a 73 ECU and find that resistor... |
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| Dave_Darling |
Sep 22 2005, 09:18 PM
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#5
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914 Idiot Group: Members Posts: 14,991 Joined: 9-January 03 From: Silicon Valley / Kailua-Kona Member No.: 121 Region Association: Northern California
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As long as the MPS and ECU are the same year, I don't think it's a big deal.
Only add a resistor to your CHT line if you think your car runs a bit lean in the middle of warming up (e.g., for the 2nd-4th minutes you drive it). --DD |
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| TravisNeff |
Sep 22 2005, 09:32 PM
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#6
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914 Guru Group: Members Posts: 5,082 Joined: 20-March 03 From: Mesa, AZ Member No.: 447 Region Association: Southwest Region
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I believe the resisitor will only help if you are using the 73 ECU.
It is Brad Anders his site is http://members.rennlist.com/pbanders/ |
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| Bleyseng |
Sep 23 2005, 07:56 AM
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#7
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Aircooled Baby! Group: Members Posts: 13,035 Joined: 27-December 02 From: Seattle, Washington (for now) Member No.: 24 Region Association: Pacific Northwest |
The 74 parts are better cuz they were designed for the 2.0l. and the MPS does have a WOT setting.
The 73 ECU is a 1.7 one. The 73 CHT uses a ballast resistor so it idles ok The 73 MPS is a one off year to make it work with a 1.7L ECU |
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| qa1142 |
Sep 27 2005, 05:45 PM
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#8
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Whiplash Group: Members Posts: 1,514 Joined: 1-June 04 From: Lake Zurich, Illinois Member No.: 2,140 |
Ok if 74 is better than 73...
What about my 75 D jet? any issues with this one? |
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