Thread: no boost on DIC after header swap

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  1. #1 no boost on DIC after header swap 
    GT Level Member taman86's Avatar
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    so finally this past thursday evening i finally got my SD headers done, after 15 hrs spanned over a weeks time. got it all together and have to touch up a couple things like a leak at the crossover and front header, leak at the dp after the u bend, and dent in the firewall for the front o2. Friday morning i took it for a test drive and layed into it and it pulls like a SOB now for sure, except the DIC reads no boost. i was chating yesterday with some guys and it could be because of the broken vacuum lines to the map sensor which i broke in the process of the install and took some pics of the broken lines and where they lead to. i also removed the EGR in the swap process and used the pipe flanges to create my own block off plates using nickles and rtv to seal the egr tube on the header and the port on the LIM, ill be checking those soon to see if they are leaking. so can anybody tell me what these sensor are for certain, where i can get these vacuum lines from, and if this is causing my boost problem?

    This vaccum line is snapped off at the 'T' at the fuel rail and the line runs under the SC snout to a 'T' on the LIM, then runs under the Alt. to what i am assuming is the MAP sensor on the back side of the SC.



    then the other side of the vacuum line that runs from the 'T' at the fuel rail is broken and runs to this thing what ever it is.



    Also what is this and what is it supposed to be attached to?


    And is this the evap solenoid?
    01 T/A WS6-SOLD
    97 grand prix gtp- flowmaster mufflers, short ram intake, SD headers (no cat), EGR delete, 160* stat, solid motor mount, AL 606's, ported TB, new coils,lifetime warranty plug wires
    BoostnBlackGTP>"Wbody's r cheap to do up and fix but break down alot lol"
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  2. #2 Re: no boost on DIC after header swap 
    GrandPrix Junkie PurpleGuy's Avatar
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    ya the vaccum lines are your problem...my brothres gtp wouldnt read boost...fixed a vaccum line...read fine....best bet is probably going to a junkyard
    2001 Regal GS, PLOG, 3" DP, 1.9's/L76 springs. 21* of timing on a 3.4"
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  3. #3 Re: no boost on DIC after header swap 
    GT Level Member taman86's Avatar
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    ok, cool. hopefuly they have a gtp i can pull from. damn things just fell apart really, i literally touched them and they came apart
    01 T/A WS6-SOLD
    97 grand prix gtp- flowmaster mufflers, short ram intake, SD headers (no cat), EGR delete, 160* stat, solid motor mount, AL 606's, ported TB, new coils,lifetime warranty plug wires
    BoostnBlackGTP>"Wbody's r cheap to do up and fix but break down alot lol"
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  4. #4 Re: no boost on DIC after header swap 
    GrandPrix Junkie PurpleGuy's Avatar
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    theyre old, they break, it happens.
    2001 Regal GS, PLOG, 3" DP, 1.9's/L76 springs. 21* of timing on a 3.4"
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  5. #5 Re: no boost on DIC after header swap 
    GT Level Member taman86's Avatar
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    do you happen to know what that solenoid is that is hanging on my firewall with nothing attached to it? its been like that since i got the car
    01 T/A WS6-SOLD
    97 grand prix gtp- flowmaster mufflers, short ram intake, SD headers (no cat), EGR delete, 160* stat, solid motor mount, AL 606's, ported TB, new coils,lifetime warranty plug wires
    BoostnBlackGTP>"Wbody's r cheap to do up and fix but break down alot lol"
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  6. #6 Re: no boost on DIC after header swap 
    Moderator dsmuts's Avatar
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    Quote Originally Posted by taman86 View Post


    Where is this one supposed to go? I found that mine was unhooked when i was putting on my sri today so i just blocked it off for now.
    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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  7. #7 Re: no boost on DIC after header swap 
    GT Level Member taman86's Avatar
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    It bolts to the supercharger near the front by the throttlebody
    01 T/A WS6-SOLD
    97 grand prix gtp- flowmaster mufflers, short ram intake, SD headers (no cat), EGR delete, 160* stat, solid motor mount, AL 606's, ported TB, new coils,lifetime warranty plug wires
    BoostnBlackGTP>"Wbody's r cheap to do up and fix but break down alot lol"
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  8. #8 Re: no boost on DIC after header swap 
    GrandPrix Junkie PurpleGuy's Avatar
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    Quote Originally Posted by taman86 View Post
    do you happen to know what that solenoid is that is hanging on my firewall with nothing attached to it? its been like that since i got the car
    No i can go out and check though.
    2001 Regal GS, PLOG, 3" DP, 1.9's/L76 springs. 21* of timing on a 3.4"
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  9. #9 Re: no boost on DIC after header swap 
    GT Level Member taman86's Avatar
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    Ok thanx 4th
    01 T/A WS6-SOLD
    97 grand prix gtp- flowmaster mufflers, short ram intake, SD headers (no cat), EGR delete, 160* stat, solid motor mount, AL 606's, ported TB, new coils,lifetime warranty plug wires
    BoostnBlackGTP>"Wbody's r cheap to do up and fix but break down alot lol"
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  10. #10 Re: no boost on DIC after header swap 
    GrandPrix Junkie PurpleGuy's Avatar
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    Unfortunately I couldn't find that. But what I can do is post pix of my vaccum routing if you'd like. I'm a little confused though. I don't have the T fitting in front of the supercharger.

    Just LMK if you want pix.
    2001 Regal GS, PLOG, 3" DP, 1.9's/L76 springs. 21* of timing on a 3.4"
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  11. #11 Re: no boost on DIC after header swap 
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    The top one is supposed to have a foam filter on it.

    thats on the BBV valve thing.

    http://www.rockauto.com/catalog/moreinfo.php?pk=88953

    i love vacuum leaks
    Last edited by matt5112; 03-13-2011 at 12:38 AM.
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  12. #12 Re: no boost on DIC after header swap 
    GT Level Member taman86's Avatar
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    nah its ok 4th, mostly just curious as to what the thing is that has nothing attached to it and just hanging there
    01 T/A WS6-SOLD
    97 grand prix gtp- flowmaster mufflers, short ram intake, SD headers (no cat), EGR delete, 160* stat, solid motor mount, AL 606's, ported TB, new coils,lifetime warranty plug wires
    BoostnBlackGTP>"Wbody's r cheap to do up and fix but break down alot lol"
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  13. #13 Re: no boost on DIC after header swap 
    GrandPrix Junkie PurpleGuy's Avatar
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    After you pointed it out I realized it was this "thingy"



    Just another showing the vac lines better. I also circled the connector in the next couple just to serve as a refernce point.




    I lost it at the master cylinder resevoir


    I'm not exactly sure where the other vaccum line goes..ill check tomorrow.
    2001 Regal GS, PLOG, 3" DP, 1.9's/L76 springs. 21* of timing on a 3.4"
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  14. #14 Re: no boost on DIC after header swap 
    Needs A Turbo BoostJunki3's Avatar
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    replace all your vacuum line with rubber vac/windshield fluid line from advance auto.....welcome to no more vac leaks.

    00 Silvermist GTP
    E85|GenV|3.2|#65's|1.95 YT RR w/105's|Pacesetters|N*/LQ4|PRJ rewire/255lph
    13.2 @ 104. No Cam No IC.
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  15. #15 Re: no boost on DIC after header swap 
    GT Level Member taman86's Avatar
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    that is a good idea, thanx junkie
    01 T/A WS6-SOLD
    97 grand prix gtp- flowmaster mufflers, short ram intake, SD headers (no cat), EGR delete, 160* stat, solid motor mount, AL 606's, ported TB, new coils,lifetime warranty plug wires
    BoostnBlackGTP>"Wbody's r cheap to do up and fix but break down alot lol"
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