Thread: Very Bad mpg need help

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  1. #1 Very Bad mpg need help 
    SE Level Member 97GPJJ's Avatar
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    My car is only get between 13-15mpg right now and my muffler has a whole in it
    97 grand prix - sold
    2000 grand prix gtp xp cam,3.2 pulley ,tog headers
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  2. #2 Re: Very Bad mpg need help 
    I live here. UR LOSN's Avatar
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    clean the MAF, change the fuel filter, clean the air filter, seafoam it, change 02 sensor

    does the car feel sluggish at all? like you have to use more fuel than normal to get it to move?
    Last edited by UR LOSN; 01-09-2013 at 04:00 AM.
    2001 GTP- PT76 turbo, Intense Drag cars old engine, Stage 4 Intense turbo cam,FMIC,150 wet,Double roller timing chain,Diamond forged coated pistons 8:0:1,Diamond piston rings,Cryoed L32 connecting rods,Cryoed crank,Clevite77 main bearings,Clevite77 cam bearings,Clevite77 L32 rod bearings,ARP Everything, Intense/meizere true billet Flexplate,Intense Wilson UIM/LIM,Intense oil pressure kit,Cometic,OE-R lifters,Cryoed L67 block,ATI turbo dampner,80# inject,Weldon 2035 fp,Aero Fuel Rails,AL cradle
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  3. #3 Re: Very Bad mpg need help 
    Moderator dsmuts's Avatar
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    How far and how long do you drive? Its hole btw
    98 GTP modded 1.9's, sd headers, 3.4", zzp 1.0 230K miles scrapped.
    04 Comp G zzp stb's, UMI ta's, Speedbuilt sways, bully flo heads, XP, zzp headers, fsic, thrasher shift kit, 60#, 2.6" corsa 2.5", Inferno hood
    01 gt z7 turbo tep trans zzp motor
    08 g8 gt cam exhaust 11.87@118
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  4. #4 Re: Very Bad mpg need help 
    SE Level Member 97GPJJ's Avatar
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    Quote Originally Posted by dsmuts View Post
    How far and how long do you drive? Its hole btw
    at Least 10-15 miles a day
    And it was 2 in the morning I was tired af
    97 grand prix - sold
    2000 grand prix gtp xp cam,3.2 pulley ,tog headers
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  5. #5 Re: Very Bad mpg need help 
    Moderator dsmuts's Avatar
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    In town or highway?
    98 GTP modded 1.9's, sd headers, 3.4", zzp 1.0 230K miles scrapped.
    04 Comp G zzp stb's, UMI ta's, Speedbuilt sways, bully flo heads, XP, zzp headers, fsic, thrasher shift kit, 60#, 2.6" corsa 2.5", Inferno hood
    01 gt z7 turbo tep trans zzp motor
    08 g8 gt cam exhaust 11.87@118
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  6. #6 Re: Very Bad mpg need help 
    SE Level Member 97GPJJ's Avatar
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    Town
    97 grand prix - sold
    2000 grand prix gtp xp cam,3.2 pulley ,tog headers
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  7. #7 Re: Very Bad mpg need help 
    Moderator DanPrixGTP's Avatar
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    upstream o2, plugs/wires, clean MAF, make an intake, change fuel filter
    '97 GTP - Stage 2 Heads, 90# Springs, 1.9 Harland Sharp Rockers, Gen V, 3.0, Intake, N* TB, LQ4, FSIC, 10.5mm Wires, Poly Mounts, SLP Headers, Borla Exaust, Built Trans - SOLD*

    '08 G8 GT - 6.7L 408CI Stroker, 239/254 Cam, Fast Intake, 102mm TB, CAI, Full Exhaust.





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  8. #8 Re: Very Bad mpg need help 
    SE Level Member 97GPJJ's Avatar
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    How am I supposed to make intake ?
    97 grand prix - sold
    2000 grand prix gtp xp cam,3.2 pulley ,tog headers
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  9. #9 Re: Very Bad mpg need help 
    Moderator DanPrixGTP's Avatar
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    Look at my Picture below this post.

    I made that.

    About 95% of people on this site make their own, and ive made three of them so far.

    Have $60 and 10 minutes of your time? Thats all it takes.
    '97 GTP - Stage 2 Heads, 90# Springs, 1.9 Harland Sharp Rockers, Gen V, 3.0, Intake, N* TB, LQ4, FSIC, 10.5mm Wires, Poly Mounts, SLP Headers, Borla Exaust, Built Trans - SOLD*

    '08 G8 GT - 6.7L 408CI Stroker, 239/254 Cam, Fast Intake, 102mm TB, CAI, Full Exhaust.





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  10. #10 Re: Very Bad mpg need help 
    The Blue One blueguy's Avatar
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    How are we supposed to read and research?

    Click the link in my signature JJ guy, and read it. And then learn.
    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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  11. #11 Re: Very Bad mpg need help 
    SE Level Member 97GPJJ's Avatar
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    Just a piece of hose and some clamps
    97 grand prix - sold
    2000 grand prix gtp xp cam,3.2 pulley ,tog headers
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  12. #12 Re: Very Bad mpg need help 
    Moderator DanPrixGTP's Avatar
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    Ill work you through it. step by step.

    By PVC pipe from lowes, and two clamps and a rubber coupler, then buy an air filter from AutoZone.

    Remove, stock air box and tubing.

    Drill hole in PVC pipe for IAT sensor to sit in.

    Clamp Air filter to PVC pipe.

    Clamp PVC pipe to throttle body with rubber coupler and two clamps inbetween.

    And boom, 10 minutes later, you now have a home made intake.
    '97 GTP - Stage 2 Heads, 90# Springs, 1.9 Harland Sharp Rockers, Gen V, 3.0, Intake, N* TB, LQ4, FSIC, 10.5mm Wires, Poly Mounts, SLP Headers, Borla Exaust, Built Trans - SOLD*

    '08 G8 GT - 6.7L 408CI Stroker, 239/254 Cam, Fast Intake, 102mm TB, CAI, Full Exhaust.





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  13. #13 Re: Very Bad mpg need help 
    The Blue One blueguy's Avatar
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    ^^He has an '04+.

    MAF is external.

    So it'll need an extra clamp in there.
    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: Very Bad mpg need help 
    Moderator DanPrixGTP's Avatar
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    Quote Originally Posted by blueguy91 View Post
    ^^He has an '04+.

    MAF is external.

    So it'll need an extra clamp in there.
    Negative Ghost rider.

    He has a 97, just like me.
    '97 GTP - Stage 2 Heads, 90# Springs, 1.9 Harland Sharp Rockers, Gen V, 3.0, Intake, N* TB, LQ4, FSIC, 10.5mm Wires, Poly Mounts, SLP Headers, Borla Exaust, Built Trans - SOLD*

    '08 G8 GT - 6.7L 408CI Stroker, 239/254 Cam, Fast Intake, 102mm TB, CAI, Full Exhaust.





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  15. #15 Re: Very Bad mpg need help 
    Moderator DanPrixGTP's Avatar
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    Jake, follow this write up:

    http://www.grandprixforums.net/simpl...res-33351.html

    It cant get much easier/straight forward than that.
    '97 GTP - Stage 2 Heads, 90# Springs, 1.9 Harland Sharp Rockers, Gen V, 3.0, Intake, N* TB, LQ4, FSIC, 10.5mm Wires, Poly Mounts, SLP Headers, Borla Exaust, Built Trans - SOLD*

    '08 G8 GT - 6.7L 408CI Stroker, 239/254 Cam, Fast Intake, 102mm TB, CAI, Full Exhaust.





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  16. #16 Re: Very Bad mpg need help 
    The Blue One blueguy's Avatar
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    Can't see the pics at work.

    Thought it was blower car when it says GT GP
    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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  17. #17 Re: Very Bad mpg need help 
    GTX Level Member
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    Go to ZZP's site. Get a big K&N filter, intake tubing, a metal coupler to connect the tubing and filter. Bam done, $60.
    Slowest 'Cooled Gen V ever

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  18. #18 Re: Very Bad mpg need help 
    Moderator DanPrixGTP's Avatar
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    Quote Originally Posted by footballplaya3k View Post
    Go to ZZP's site. Get a big K&N filter, intake tubing, a metal coupler to connect the tubing and filter. Bam done, $60.
    Negative on the K&N.

    Just go with Spectre from AutoZone. Trust me.
    '97 GTP - Stage 2 Heads, 90# Springs, 1.9 Harland Sharp Rockers, Gen V, 3.0, Intake, N* TB, LQ4, FSIC, 10.5mm Wires, Poly Mounts, SLP Headers, Borla Exaust, Built Trans - SOLD*

    '08 G8 GT - 6.7L 408CI Stroker, 239/254 Cam, Fast Intake, 102mm TB, CAI, Full Exhaust.





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  19. #19  
    Turbo is the way to go. REDCRAPGP's Avatar
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    Quote Originally Posted by DanPrixGTP View Post
    Negative on the K&N.

    Just go with Spectre from AutoZone. Trust me.
    Or

    http://item.mobileweb.ebay.com/viewi...id=80068658104

    Avoid the oily K&N crap. There good is you use the right amount of oil.
    Squirrels are my engine. I need a Ford Regal
    04 Comp G.
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  20. #20 Re: Very Bad mpg need help 
    SE Level Member 97GPJJ's Avatar
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    Would it be cheaper to buy all the from home depot
    Or the alreadyade kit from autozone??
    97 grand prix - sold
    2000 grand prix gtp xp cam,3.2 pulley ,tog headers
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