Forced Induction Superchargers | Turbochargers | Intercoolers

INTAKE pipe TOO Big???

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Old Jul 8, 2007 | 06:29 PM
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Default INTAKE pipe TOO Big???

I have a 3" outlet coming off the intercooler and I stepped it up to a 4" pipe going from the intercooler to the throttle body......some people are telling me this may be to big and be hurting the performance.......I'm not denying that this may be true but what aspects of the performance may be hurting.

Thanks.
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Old Jul 8, 2007 | 08:18 PM
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I have seen plenty of setups like you are decribing. I have no experience with them but I cant see how it could hurt power.
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Old Jul 8, 2007 | 09:03 PM
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It will not hurt anything, although there is no need for it to be that big.

Theretically it could cause a boost lag, but that is probably less than 1 thousanth of a second. People run 4" tubing to rear mounted intercoolers without problem, so you have nothing to worry about.
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Old Jul 8, 2007 | 09:13 PM
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Like, everyone is saying, You will be fine...IF there is any prob with it, it will be VERY minimal.
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Old Jul 9, 2007 | 06:09 AM
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Thats what i run....... works fine for me.............
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Old Jul 9, 2007 | 07:12 AM
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i used to have it stepped off the IC were it left from 3" transitioned to 4", worked just fine. you have to have it transitioned somewhere to get it to match the TB anyways.
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Old Jul 9, 2007 | 07:39 AM
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thanks for the replies guys...I was just worried it would cause my boost to come on later...but if you dont thinkn so..I wont spend the money to change it to a 3".
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Old Jul 9, 2007 | 12:23 PM
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That is what I am running( 3" from blower to intercooler and 4" from intercooler to TB ) and I have no issues.

Keith
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Old Jul 10, 2007 | 01:42 PM
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Mine work's great!
Attached Thumbnails INTAKE pipe TOO Big???-4in.-intake-tube003.jpg  
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