Compression check should be the FIRST thing you do. Get your car "back to stock" as the saying goes. Then get a better intake and exhaust and a walbro fuel pump(inexpensive and a good safety measure) and the nitrous kit. Install it correctly. Don't use platinum plugs. Don't use it at every single stop light. And don't use a huge shot, be reasonable.
1993 Ford Probe, nowhere near street legal.
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