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Hardware/software for obd 1

Practical Reflash Tuning

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I have a 94 jeep Cherokee 4.0 and a 93 240 sx ka24de, both of which are obd 1 and I want to use them to practice tuning while they are still n/a. What are some hardware/software items you would suggest that would work well for obd 1 applications?

try Nistune for the 240sx.

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