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

Prom chip

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Old Jul 3, 2025 | 08:37 AM
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Default Prom chip



Has anyone ever used this type of chip? It's in my ECM for the 92 model.
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Old Jul 3, 2025 | 09:00 AM
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Label hints it was for a 373CI - 4L60 - '93, that's pretty obvious. How does your car run with it? Is your car modified or ....?
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Old Jul 3, 2025 | 09:11 AM
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Not a fan of chips, Never used one on a Corvette but have on my other cars. Over time the chip would fail - car not start remove chip - ran fine From well known manufacturers before EPA did the chip crackdown - or labeled off road use only
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Old Jul 7, 2025 | 08:22 AM
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Have never heard the car run yet lol. Bought it as is and determined every time u turn the key on the ECM fuse would blow. Figured out ECM had an internal short so now trying to find a replacement or get this one repaired.
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Old Jul 13, 2025 | 09:00 AM
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We have never driven the car (will not start). Not sure how it ran with this chip. Purchased it very cheap thinking it was the VATS according to the guy it was purchased. from. About ready to part it out lol.
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Old Jul 13, 2025 | 10:12 AM
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Originally Posted by WVZR-1
Label hints it was for a 373CI - 4L60 - '93, that's pretty obvious. How does your car run with it? Is your car modified or ....?
id guess automatic 3.73 rear gears
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