C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

ALDL --> USB Cable: DIY?

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Old Oct 6, 2024 | 10:51 AM
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Default ALDL --> USB Cable: DIY?

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Has anyone recently made an ALDL to USB cable?

Looking for an ALDL to USB cable. They are pricey, so was looking to make one myself.

Most posts about DIY are now dated.

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Old Oct 6, 2024 | 11:48 AM
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I tried. The problem was I didn't know how to connect because I had never done it before. In the end the $60 bucks was worth knowing I had a good cable and could concentrate on getting the different programs to work without worrying whether it was a user or cable problem.
I have an 87 OBD1.
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Old Oct 6, 2024 | 11:48 AM
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I made an ALDL to serial and then used a serial to usb adaper I had laying around. Still have it, works well just don't use it much anymore.
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Old Oct 6, 2024 | 12:33 PM
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Thanks. What brand did you go with? And where did you purchase it?
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Old Oct 6, 2024 | 10:29 PM
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I’ve never tried this…
https://www.gearhead-efi.com/Fuel-In...ull=1#post7852
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Old Oct 6, 2024 | 11:55 PM
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which software do you use?
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Old Oct 7, 2024 | 08:07 AM
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About half way down this thread is a conversation another member had going through purchasing a cable. Just make sure you purchase the one for your year car as that thread is about earlier model C4's. My 87 needed the 10k resistor yours may not.
https://www.corvetteforum.com/forums...tting-old.html
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Old Oct 7, 2024 | 11:24 AM
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Default OBD1 Cable

Interesting thread, I have a 1994 C4 equipped with OBD1. Once you have the cable mentioned, what software do you use?

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Old Oct 7, 2024 | 11:50 AM
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Tunerpro, tuner cat and more. Others here on the forum can offer more help on software than I.

Your 94 uses a unique cable. Make sure you get the right one. I believe it is a 16 pin cable but is still OBD1. BEWARE, take the time to understand which cable.
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