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turn up the boost needs tune?

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Old 05-04-2011, 11:32 PM
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Default turn up the boost needs tune?

so i was wondering if i need to retune my car if i turn up the boost on it. right now its pulliing 300 whp and on 8 lb. if i turn it up or turn it down, will that mess up the tune? i am tuned on s300 and 3 bar map sensor and 1000 cc injectors. thanks.
Old 05-05-2011, 04:51 AM
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Default Re: turn up the boost needs tune?

turning it down is fine. turning it up requires a retune.
Old 05-05-2011, 06:14 AM
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Default Re: turn up the boost needs tune?

What's your a/f at 8psi and what is done to your motor? Some shops give you a little extra fuel after the tuned psi and some don't. If you have a wideband and if the motor is built enough, I would try going up by 1psi at a time.
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