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Pontiac Forum: 2006 grand prix 3.8 n/a mods
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Old July 10th, 2018, 08:08 PM
GPturner GPturner is offline
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2006 grand prix 3.8 n/a mods

Hi, I recently bought my 06 grand prix. I was wanted to do some engine mods to it but nothing crazy. I'm not expecting many gains. Just something to make driving a little more exciting. Does anyone have experience with an air intake and/or an axleback?
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Old July 11th, 2018, 09:41 AM
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Here are some CAI kits https://www.summitracing.com/search/...rder=Ascending
Here are some CAT back kits
https://www.summitracing.com/search/...rder=Ascending
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Old July 12th, 2018, 08:55 AM
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Do you have experience with either one of these?
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Old July 12th, 2018, 10:03 AM
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personally no I do not
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Old July 12th, 2018, 02:03 PM
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I would not expect a lot of performance increase with just those modification, maybe 5 to 10 HP total. A high flow catalytic converter and a reprogramed PCM will do more, but the intake & cat back will also help some.
The programmer can also adjust the trans shift points and increase the trans line pressure, a quicker shifting trans will make the car feel much better. Just my Opinion.

I owned a 99 GTP but have never owned a 2003-2008 GP
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Old July 12th, 2018, 08:53 PM
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What kind of performance things can I do with the programmer? And are there any programmers you recommend?
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