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LT1-LT4 Modifications 1993-97 Gen II Small Block V8

'94 Z28 tunercat file needed

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Old 09-09-2010, 09:59 PM
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Default '94 Z28 tunercat file needed
I have a '94 Z28 stock except for pacesetter longtubes, offroad y, and magnaflow catback. I deleted the EGR and smog pump, etc. I would love someone to help me to tune those out and get my car back to running right. It is surging and bucking something fierce. Please let me know if anyone can help. I have uploaded my current tune and data log.
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Old 09-10-2010, 12:48 AM
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If it's surging when in closed loop and not in open loop,it may be the O2 sensors.
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Old 09-10-2010, 10:16 PM
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i put in new ones when i did the new exhaust. I believe i used Denso.
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Old 09-15-2010, 09:40 PM
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I found out that it was the spark plug wires. several were bad...holes can cause an issue!
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