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What is the clean air mod on a F4I?

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Old 03-31-2011, 04:05 PM
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all of them krux!
 
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Old 03-31-2011, 04:18 PM
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What people don't realize is that the PAIR valve closes under acceleration. If you link the pcv valve and the PAIR valve tubes together you are essentially blocking the pcv from venting under engine load. Is that okay?
 

Last edited by DBEAU; 03-31-2011 at 04:26 PM.
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Old 03-31-2011, 04:28 PM
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Originally Posted by DBEAU
What people don't realize is that the PAIR valve closes under acceleration. If you link the pcv valve and the PAIR valve tubes together you are essentially blocking the pcv from venting under engine load. Is that okay?
I'm with him

For the minimal sotp that you "feel" you gain..you are probably in reality not gaining anything...just messing with how an engine is built to perform
 
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Old 03-31-2011, 09:26 PM
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im lost, it looks easy but what are the advantages of this? more hp?
 
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Old 03-31-2011, 10:47 PM
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It throws unburnt air/fuel back into to the intake system. Like I said it's Dyno proven mod so why would it be bad? Your hooking vent to vacuum pretty much in theory since the pair valve is just a tee now. As for the picture I just flipped the pair vavle around so all 3 lines can be hooked up and took the internal spring and washer out of the valve to act just like a tee(free instead of buying a tee) Plus you keep your pair valve plugging into your system.
 
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Old 03-31-2011, 10:52 PM
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Old 04-01-2011, 12:18 AM
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alright well i read on stuntlife that u have to adjust your cables,is this just for the stunters or period, i really wanna do it but dont wanna **** with my cables
 
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Old 04-01-2011, 02:41 AM
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I'm just as lost. I'm really interested in cheap mods though considering I just dropped $352 on tires, 59 on a cam chain tensioner lifter, 10.99 on grips, 9.99 on bar ends, 29 on a new battery, 6 on a homemade fender eliminator, 44 on a new chain, 16 dollars on air filter cleaner and oil and another 9.99 on chain wax.... all that being said I still havent told you about my mounting and balenceing fees for hooking up the new tires which is 27.90 a tire.... I'll just feel blessed if this adds a couple horses along with the smooth air duct mod that eliminates both upper and lower resonators
 
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Old 04-01-2011, 10:00 AM
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This is the thread that convinced me to do the clean air mod a few years back.
It actually produces MORE vaccum in the crankcase resulting in more power. Dyno proven! I've been searching all morning and cant find the dyno sheet i saw years ago.
 
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Old 04-01-2011, 10:43 AM
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there you go....then you block off the holes where the hoses used to go
 

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