Thread: 5* of knock retard at WOT please help

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  1. #21 Re: 5* of knock retard at WOT please help 
    GT Level Member al2000gtp's Avatar
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    Lol well i didnt know i just thought it was weird they were both getting so much more than i was and no the only 2 codes that i have got have been the PO135 and PO650. I did check around on the vacum lines and the lines look pretty good but i have a couple of the t-fittings that are dry rotted pretty bad. When i was talking about how much money i spent i didnt just mean the headers, i just had a brand new engine put in along with the headers and the new exhaust.
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  2. #22 Re: 5* of knock retard at WOT please help 
    Moderator dsmuts's Avatar
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    You should have around 18-20in/hg at idle unless cammed.
    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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  3. #23 Re: 5* of knock retard at WOT please help 
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    You can still have 20 in Hg and have a vac leak.
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  4. #24 Re: 5* of knock retard at WOT please help 
    Moderator dsmuts's Avatar
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    Also true^^
    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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  5. #25 Re: 5* of knock retard at WOT please help 
    GT Level Member al2000gtp's Avatar
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    well mine is about 9 to 10. is there a thread or site i could look at to see where all of the vacuum lines are. Ive only follow one vacuum line around the supercharger but noticed most of the fittings are dry rotted and cracked. Line didnt look to bad though but like i said thats the only one ive checked
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  6. #26 Re: 5* of knock retard at WOT please help 
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    buy the entire kit from gm.
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  7. #27 Re: 5* of knock retard at WOT please help 
    GT Level Member al2000gtp's Avatar
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    Alright one other thing how would i be able to tell if the metal tube by the egr was leaking like blue said. I wasnt there when the guy installed my headers but he said he pretty much just set the back headers in the engine bay and then put the new engine in. Didnt say he had any problems or anything but that doesnt mean he didnt
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  8. #28 Re: 5* of knock retard at WOT please help 
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    unbolt EGR tube from LIM and pull it out.

    If its broken it'll leak until you replace it.

    wreckers have 'em all over the place.
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  9. #29 Re: 5* of knock retard at WOT please help 
    GT Level Member al2000gtp's Avatar
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    Thanks matt one other ? for ya. What site can i get that gm kit from?
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  10. #30 Re: 5* of knock retard at WOT please help 
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    GM parts direct with the part numbers from this thread: http://www.grandprixforums.net/l67-v...ces-56625.html
    Last edited by matt5112; 06-15-2012 at 08:43 PM. Reason: updated link
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  11. #31 Re: 5* of knock retard at WOT please help 
    GT Level Member al2000gtp's Avatar
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    Thanks again.
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