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PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

Do I need dyno tune?

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Old 09-05-2009 | 09:22 PM
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camarorat
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Default Do I need dyno tune?
Had my car dyno tuned using stock MAF parameters. changed the MAF to 85mm.Set the parameters for the 85mm MAF. Do i need to have the car dyno tuned again?
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Old 09-06-2009 | 03:04 PM
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I would have the air fuel verified. Doesn't need to be on a Dyno to do this.
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Old 09-07-2009 | 10:27 AM
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How did you change parameters to a 85mm MAF? Which MAF? A wide band will tell you whats happening WOT, watch the fuel trims for closed loop, see if they remain at or near zero.
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