How are you going past the rev limiter to 7k?
Sounds like something ignition related, not ecu. You said they did plugs, wires. There are no wires, there are coil packs. Maybe something is wrong with the work they did.
What exhaust did you put on?
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Collin
1995 L AWD
Locker
1987 Porsche 944 turbo
80k miles. MBC + Chips. Relatively Stock
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