Ignitions and Electrical› Computers, Chips, Modules and Programmers
Hypertech
90 CK1525 43 TBI AUTO T40
SKU: H01A 120031
Beginner — under 30 min
Description
It controls the engine's air/fuel ratio and spark advance to maximize power and performance in unmodified vehicles. This chip is engineered for stock 1981-1995 GM vehicles and specifically fits the 1990 CK15/25 with a 4.3L TBI engine and TH400 automatic transmission.
Fitment
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Specifications
| Brand | Hypertech |
| Part Number | H01A 120031 |
Buy with Confidence
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
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