Thread: Dropped Boost After Headers

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  1. #1 Dropped Boost After Headers 
    SE Level Member KFCOrBust's Avatar
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    Used to peak at 8.7ish psi and now it won't even hit 7. Probably a nub question, but is that supposed to happen or did I spring me a vacuum leak during the install? I have a 3.4 and pcm to be installed just being lazy right now...Also a 3 jaw pulley puller is what I use for the pulley right? Others have told me to use a 2 jaw one but I'm a little leary on that.
    1998 Buick Regal GS - $400 DD. 4" PVC Intake, SSAC Headers, Autolite 605's, Intense Standard PCM, 3.4" ZZP MPS
    1993 Chevy S10 Blazer - 4.3 V6, 5 Speed, Bench Seat, No Options.
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  2. #2 Re: Dropped Boost After Headers 
    GrandPrix Junkie Sandman's Avatar
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    Your boost will drop with the headers since you can flow a lot more air through the motor now. For the puller you want to get the one that ZZP has or a similar one. You can rent them also.
    05 Saab 9-2X Linear (Saabaru)
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    Quote Originally Posted by TLSheff View Post
    You said "I'm done with it"... car says "Oh, really? *trollface*"
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  3. #3 Re: Dropped Boost After Headers 
    SE Level Member KFCOrBust's Avatar
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    Thought so! Me and my buddy thought the same thing but I wasn't sure, thanks man!

    Yeah I've been trying to rent a puller from the local Advance Auto but EVERY time I go there, it's out! I might as well just buy the damn thing...
    1998 Buick Regal GS - $400 DD. 4" PVC Intake, SSAC Headers, Autolite 605's, Intense Standard PCM, 3.4" ZZP MPS
    1993 Chevy S10 Blazer - 4.3 V6, 5 Speed, Bench Seat, No Options.
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  4. #4 Re: Dropped Boost After Headers 
    GrandPrix Junkie machinegunsquid's Avatar
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    Yeah, you drop boost when you flow better, same thing happens when you cam the car, or install high ratio rockers.
    Looking at your mods, you might wanna kick some Autolite 104's now, to keep it safe.

    "**** bills. You can live in your car but you can't race your house" -dsmuts
    Want her to stop when she's not looking karate chop her in her crotch that should quiet her for a bit or at the very least put a smile on your face -REDCOMPG
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  5. #5 Re: Dropped Boost After Headers 
    The mod from over yonder TheOtherNick's Avatar
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    You will ruin your snout trying to use a three jaw puller. rent one from a vendor site the supports the whole back of the pulley.
    01 gtp-big cam e85 dd 78dodge- guzzling fuel 05 cummins- rollin coal
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  6. #6 Re: Dropped Boost After Headers 
    GrandPrix Junkie machinegunsquid's Avatar
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    Don't use the 3 jaw, listen to 01GTP.

    I rented one from ZZP when I did my MPS setup, and it worked flawlessly.

    "**** bills. You can live in your car but you can't race your house" -dsmuts
    Want her to stop when she's not looking karate chop her in her crotch that should quiet her for a bit or at the very least put a smile on your face -REDCOMPG
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  7. #7 Re: Dropped Boost After Headers 
    GT Level Member 99GPGTP's Avatar
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    if you dont want to buy a puller u could always remove the nose cone off the supercharger and take to a local machine shop and have them press the pulley off and press the new one on it shouldnt cost but about 20 bucks or so plus the oil for the supercharger. i chose to go this route cause it was cheaper. a regular jaw puller wont work. they will warp the pulley or mess up the shaft end.
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  8. #8 Re: Dropped Boost After Headers 
    GT Level Member jdmgtp's Avatar
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    I just went from a plog/ 3" downpipe to headers and I lost 2 psi.
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  9. #9 Re: Dropped Boost After Headers 
    GT Level Member silvermistchick's Avatar
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    well since you guys lost boost, did you loss the sound? im in the process of getting me some speed daddy"s
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  10. #10 Re: Dropped Boost After Headers 
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    sound shouldnt change since thats all based on how fast the blower is spinning and your intake.
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  11. #11 Re: Dropped Boost After Headers 
    The Blue One blueguy's Avatar
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    Right...your not really "losing" boost IMO, your just flowing it better. You still make as much power as before, if not more...you just make it more effieciently...at least thats the way I look at it.
    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
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  12. #12 Re: Dropped Boost After Headers 
    GT Level Member silvermistchick's Avatar
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    i was just making sure lol. it was a stupid question lol. im beating my head on the wall because i cant find a deep socket 15mm to get the coil pack bracket off so i can get heads off, smh the heat has got to me lol
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  13. #13 Re: Dropped Boost After Headers 
    The Blue One blueguy's Avatar
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    IIRC any auto parts store stocks deep well 15's because I just lost mine and had to go buy another one when I put everything back together on mine...I got a 1/2" drive too and it worked great...
    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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  14. #14 Re: Dropped Boost After Headers 
    GT Level Member jdmgtp's Avatar
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    sorry I should have been more specific. I'm making less boost, which is a good thing. Let's not get all technical now.
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  15. #15 Re: Dropped Boost After Headers 
    The Blue One blueguy's Avatar
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    Quote Originally Posted by jdmgtp View Post
    Let's not get all technical now.
    Good thing no one here uses sarcasm...or I would have thought that was a joke.
    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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