Thread: Boost issue

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  1. #1 Boost issue 
    Donating Users ninnyGTP's Avatar
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    Hey guys, I need some help trying to diagnose a strange boost issue. For some reason The car feels really sluggish and only boosts about 6psi? Not sure if it's a possible leak somewhere or more elaborate. Vac is about 20 at idle, 15-10 cruising. Anyhow, let me know what you think and i'll get right on checking it out. No KR all the way up by the way.

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    L32 longblock
    3.6 MPS
    N* TB/LQ4 Maf
    1.9 modified rockers
    SSAC headers
    colder plugs/t-stat
    Last edited by ninnyGTP; 05-03-2010 at 12:06 AM.
    98 Grand Prix GTP L32, GenV, n*, 3.2", 1.9 rr's, 3.29 gears. All that jazz SOLD
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  2. #2 Re: Boost issue 
    The Blue One blueguy's Avatar
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    BBV might have taken a sh1t on ya
    Sold WBody's: '03 Blue GTP/'98 Green GTP/'98 Silver GT/'05 GXP
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  3. #3 Re: Boost issue 
    Donating Users ninnyGTP's Avatar
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    Think it might be opening or sticking? Another thing I didn't consider until a few minutes ago was the pulley size. I think i'm just used to my 3.4 l67 build on 10psi. I may try the 3.5 or possibly 3.4 on the L32 to see if it's just me wanting it to be faster on such a large pulley haha
    98 Grand Prix GTP L32, GenV, n*, 3.2", 1.9 rr's, 3.29 gears. All that jazz SOLD
    99 Mustang GT Steeda UDPs, 3.73s, Pypes O/R xpipe, Accufab plenum, Steeda CAI, B&M ripper, MHS s2 cams, 10.5:1 compression (290whp/310wtq) SOLD
    01 SVT Cobra #3654, B&M Ripper, K&N FIPK2, MAC O/R xpipe
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  4. #4 Re: Boost issue 
    The Blue One blueguy's Avatar
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    On a 3.6" with headers/TB/rockers...I say 6 or so is pretty damn spot on.

    Put a 3.3" on there and see how she runs
    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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  5. #5 Re: Boost issue 
    Donating Users ninnyGTP's Avatar
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    I'm going to see if my buddy will let me have his 3.4 and go from there haha. I can't do this. I'm falling asleep when I punch it
    98 Grand Prix GTP L32, GenV, n*, 3.2", 1.9 rr's, 3.29 gears. All that jazz SOLD
    99 Mustang GT Steeda UDPs, 3.73s, Pypes O/R xpipe, Accufab plenum, Steeda CAI, B&M ripper, MHS s2 cams, 10.5:1 compression (290whp/310wtq) SOLD
    01 SVT Cobra #3654, B&M Ripper, K&N FIPK2, MAC O/R xpipe
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