 L-Jet Brain differences, From 74 to 75 |
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| 914nerd |
 Apr 11 2007, 08:15 PM
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#1
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Who you callin' a "Member"?  Group: Members Posts: 416 Joined: 18-July 06 From: Los Alamos, NM Member No.: 6,461  |
Some of the experts out there might know
What are the differences between the 74 and 75 brains and are they interchangeable? Thanks, Charles |
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Replies(1 - 6)
| ClayPerrine |
Apr 11 2007, 08:17 PM
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#2
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Life's been good to me so far..... Group: Admin Posts: 15,503 Joined: 11-September 03 From: Hurst, TX. Member No.: 1,143 Region Association: NineFourteenerVille 
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QUOTE(914nerd @ Apr 11 2007, 09:15 PM)  Some of the experts out there might know What are the differences between the 74 and 75 brains and are they interchangeable? Thanks, Charles Part numbers??? I don't think there is much difference. I put a 75 brain on a 74 to test it,and it works fine. |
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| Dave_Darling |
Apr 12 2007, 10:16 AM
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#3
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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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The 75 ECU can actually read the intake air temp sensor in the air flow meter. The 74 meter does not have that. Not sure if there are other changes...
--DD |
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| ClayPerrine |
Apr 12 2007, 01:17 PM
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#4
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Life's been good to me so far..... Group: Admin Posts: 15,503 Joined: 11-September 03 From: Hurst, TX. Member No.: 1,143 Region Association: NineFourteenerVille
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QUOTE(Dave_Darling @ Apr 12 2007, 11:16 AM) The 75 ECU can actually read the intake air temp sensor in the air flow meter. The 74 meter does not have that. Not sure if there are other changes... --DD IIRC.. they just separated the leads from the intake air sensor and the afm between 74 and 75 to cure cross signal interference, the brain on the other end was the same. But I have been known to be wrong. |
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| JeffBowlsby |
Apr 12 2007, 04:20 PM
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#5
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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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I doubt they could be interchangeable. One has a 6-pin connection, the other has a 7-pin connection.
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| MartyYeoman |
Apr 12 2007, 06:56 PM
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#6
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Senior Member Group: Members Posts: 1,520 Joined: 19-June 03 From: San Ramon, CA Member No.: 839 Region Association: Northern California
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QUOTE(Jeff Bowlsby @ Apr 12 2007, 03:20 PM) I doubt they could be interchangeable. One has a 6-pin connection, the other has a 7-pin connection. They have a lot more pins that 6 or 7. Maybe your thinking of the air box connector. (IMG:style_emoticons/default/confused24.gif) |
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| ClayPerrine |
Apr 12 2007, 09:11 PM
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#7
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Life's been good to me so far..... Group: Admin Posts: 15,503 Joined: 11-September 03 From: Hurst, TX. Member No.: 1,143 Region Association: NineFourteenerVille
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QUOTE(Jeff Bowlsby @ Apr 12 2007, 05:20 PM) I doubt they could be interchangeable. One has a 6-pin connection, the other has a 7-pin connection. Same number of pins at the computer, AFM is different. |
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