Thread: Modded Air Box?

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  1. #1 Modded Air Box? 
    GT Level Member SliceTheRice's Avatar
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    I know most people will just go for the FWI's, but has anyone here modded a stock air box for air flow, etc? If so will you please explain what you've done, post pics, and describe any differences you have observed?

    Thanks!

    2000 Pontiac Grand Prix GTP
    (3.4 MPS, DHP 1.0 tune, ZZP Plog & 3" DP, 2.5" cat-back exhaust, resonator delete, AL104 plugs, 180* T-stat, Falken Ziex 245/45/18 tires)
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  2. #2 Re: Modded Air Box? 
    GrandPrix Junkie CTKGP09's Avatar
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    the most restrictive part is the rubber tubing, a K&N drop in filter and a piece of solid intake tubing/PVC pipe with a 4 inch diameter would be easy and effective
    '04 Chevy Silverado LT 4x4 - intake, headers, full exhaust, zo6 cam, 799 heads, tune, leveled, 33's
    '00 Grand Prix GTP DAYTONA 500 - L36 block, S1X, intercooled, GenV, N*, headers, full exhaust, coilovers, 5 speed swap, stage 3+ clutch
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  3. #3 Re: Modded Air Box? 
    GTX Level Member tayl5645's Avatar
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    Most people in here will swear by the cheap open cone... I have one and it does its job
    2005 GTP Grey

    Custom built Open cone intake, 15% tints all the way around, 7" touchscreen DVD player
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  4. #4 Re: Modded Air Box? 
    GT Level Member SliceTheRice's Avatar
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    Quote Originally Posted by CTKGP09 View Post
    the most restrictive part is the rubber tubing
    Because of the ribs?

    2000 Pontiac Grand Prix GTP
    (3.4 MPS, DHP 1.0 tune, ZZP Plog & 3" DP, 2.5" cat-back exhaust, resonator delete, AL104 plugs, 180* T-stat, Falken Ziex 245/45/18 tires)
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  5. #5 Re: Modded Air Box? 
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    yes, causes turbulence.
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  6. #6 Re: Modded Air Box? 
    The Blue One blueguy's Avatar
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    Open Cone wins
    Sold WBody's: '03 Blue GTP/'98 Green GTP/'98 Silver GT/'05 GXP
    '99 Chevrolet Silverado Classic Z71 4x4 - K&N Intake/Gibson Exhaust #TRUCKTHINGS
    '12 Buick Regal Turbo - ZZP CAI/20% Tint/HID's
    '89 Ford Mustang LX Notchback - LM7 5.3, 4L80, 9", HX40
    '04 Chevrolet Corvette MRM A4/LS1 - TSP LT's, 3"O/R X, AFE S2 CAI
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  7. #7 Re: Modded Air Box? 
    GTP Level Member dmahlikGT's Avatar
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    who knows the hp gain from an open cone with pvc pipe?is it about 10hp?
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  8. #8 Re: Modded Air Box? 
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    depends on your mods and tune.
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  9. #9 Re: Modded Air Box? 
    GT Level Member Lenny's Avatar
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    You are talking about gutting the airbox? I've heard of this being done before. However i would recommend the DIY PVC pipe with a cone. Nothing outperforms a cone with the headlight removed.

    Best, Lenny
    2007 Grand Prix GXP

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  10. #10 Re: Modded Air Box? 
    GTP Level Member dmahlikGT's Avatar
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    no mods or tune yet.just an open cone setup.whats the gains?
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  11. #11 Re: Modded Air Box? 
    Donating Users kfish's Avatar
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    Quote Originally Posted by dmahlikGT View Post
    no mods or tune yet.just an open cone setup.whats the gains?
    more whine.
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  12. #12 Re: Modded Air Box? 
    The Blue One blueguy's Avatar
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    And better throttle response...and the gutted airbox is an old school thing. You take a saw or dremel and just hack the front of the box out behind the headlight so the entire filter is exposed. And yes...an open cone trumps a PVC pipe intake through the headlight. I'd bet money on it.
    Sold WBody's: '03 Blue GTP/'98 Green GTP/'98 Silver GT/'05 GXP
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  13. #13 Re: Modded Air Box? 
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    I did a gutted air box before i ever found out about this place, throttle response was nice. Also noticed it was a bit louder.

    Also found that behind those two honey comb grill pieces the plastic doesnt exactly flow well....
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  14. #14 Re: Modded Air Box? 
    GT Level Member SliceTheRice's Avatar
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    The only thing about open cone that I don't like is the sacrificed quality of filtering. That mixed with air filter oil fouling up your MAF. I had a FWI and then put the stock air box back in after paying $250 for a freaking MAF that went bad. My other GP buddy who has a FWI replaced FOUR MAF's last year because of his. Yes, FOUR! When I worked at Checker I saw that happening all the time to people because of cone filters. I'm sure the power/performance gains are there, but I just wish there was a happy medium. Or just a high quality cone filter that filtered at least CLOSE to what a normal paper filter will do.

    2000 Pontiac Grand Prix GTP
    (3.4 MPS, DHP 1.0 tune, ZZP Plog & 3" DP, 2.5" cat-back exhaust, resonator delete, AL104 plugs, 180* T-stat, Falken Ziex 245/45/18 tires)
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  15. #15 Re: Modded Air Box? 
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    right, its the filters fault you picked a ****ty filter or over oiled your filter.
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  16. #16 Re: Modded Air Box? 
    The mod from over yonder TheOtherNick's Avatar
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    If only someone sold good quality dry flow cone filters.
    01 gtp-big cam e85 dd 78dodge- guzzling fuel 05 cummins- rollin coal
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  17. #17 Re: Modded Air Box? 
    Donating Users JESSEGOTTA GP GT's Avatar
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    I drilled holes in my girlfriends air box on her GA GT. it helped a lot with throttle response and sounds pretty beast. AND you would never know by looking at it.
    New project: 2000 Red GTP.
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  18. #18 Re: Modded Air Box? 
    The Blue One blueguy's Avatar
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    Quote Originally Posted by SliceTheRice View Post
    The only thing about open cone that I don't like is the sacrificed quality of filtering. That mixed with air filter oil fouling up your MAF. I had a FWI and then put the stock air box back in after paying $250 for a freaking MAF that went bad. My other GP buddy who has a FWI replaced FOUR MAF's last year because of his. Yes, FOUR! When I worked at Checker I saw that happening all the time to people because of cone filters. I'm sure the power/performance gains are there, but I just wish there was a happy medium. Or just a high quality cone filter that filtered at least CLOSE to what a normal paper filter will do.
    Should have bought a Spectre or not over oiled your sh1t. Probably a K&N or something along those lines.
    Sold WBody's: '03 Blue GTP/'98 Green GTP/'98 Silver GT/'05 GXP
    '99 Chevrolet Silverado Classic Z71 4x4 - K&N Intake/Gibson Exhaust #TRUCKTHINGS
    '12 Buick Regal Turbo - ZZP CAI/20% Tint/HID's
    '89 Ford Mustang LX Notchback - LM7 5.3, 4L80, 9", HX40
    '04 Chevrolet Corvette MRM A4/LS1 - TSP LT's, 3"O/R X, AFE S2 CAI
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  19. #19 Re: Modded Air Box? 
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    i originally cut off the entire air box sourrounding the air filter and left just the filter and clips on it. no i went the pvc route and open cone. definetly better sound and seems a little better flow. also looks a hell of a lot better.
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  20. #20 Re: Modded Air Box? 
    GT Level Member AmericanRiceEater's Avatar
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    Buy one from K&N they stand out.
    Black 2000 GTP Coupe. SSAutoChrome headers, K&N Cold Air Intake, Reptile Tuned PCM, 3.4" ZZP MPS, 104 Autolites & 180 Stat.

    PS3 Online: Zirpola (Dont use mic.)
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