Thread: Richening up WOT afr with Dhp

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  1. #1 Richening up WOT afr with Dhp 
    Moderator dsmuts's Avatar
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    What do I have to do to richen the afr up to get it where I need it? I'm running around 12-12.5 right now and it's causing some KR. Thanks.
    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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  2. #2 Re: Richening up WOT afr with Dhp 
    Turbo is the way to go. Fivefingerdeathpunch's Avatar
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    You could go in the base afr vs ect table if it has one.

    What have you done to the tune if anything??

    The stock tune should already run the car pretty rich, around 11ish.

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  3. #3 Re: Richening up WOT afr with Dhp 
    Moderator dsmuts's Avatar
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    I've done nothing to tune it yet. Wot I'm leaning out pretty good. I'm running ported heads, s1x, headers, and a 3.4
    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: Richening up WOT afr with Dhp 
    GTP Level Member wa04compg's Avatar
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    Are you able to hook your WB up to DHP? I have only used HPT with WB
    04 Comp G - XP Bolt ons....boring Slow...SOLD
    08 G8 GT - exhaust Tune
    99 Silverado - 5.3 Exhaust Tune
    01 Suburban - 5.3 Intake Exhaust Tune
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  5. #5 Re: Richening up WOT afr with Dhp 
    Moderator dsmuts's Avatar
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    I'm able to buy don't know how
    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: Richening up WOT afr with Dhp 
    Turbo is the way to go. Fivefingerdeathpunch's Avatar
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    Its not worth it to hook the WB up to the dhp, its 10x easier to just glance at what its reading.

    And you are sure there is no exhaust leak before the WB sensor?

    Any codes on? What did you do to the rear o2 sensor?

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  7. #7 Re: Richening up WOT afr with Dhp 
    GTP Level Member wa04compg's Avatar
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    Where are your LTFT at?
    04 Comp G - XP Bolt ons....boring Slow...SOLD
    08 G8 GT - exhaust Tune
    99 Silverado - 5.3 Exhaust Tune
    01 Suburban - 5.3 Intake Exhaust Tune
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  8. #8 Re: Richening up WOT afr with Dhp 
    Moderator dsmuts's Avatar
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    No exhaust leaks pre wb. I have no rear o2. Not sure on the ft
    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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  9. #9 Re: Richening up WOT afr with Dhp 
    GTP Level Member wa04compg's Avatar
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    When I was getting weird blips of KR up top my FT's where off because I had added 1.9 rockers
    04 Comp G - XP Bolt ons....boring Slow...SOLD
    08 G8 GT - exhaust Tune
    99 Silverado - 5.3 Exhaust Tune
    01 Suburban - 5.3 Intake Exhaust Tune
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  10. #10 Re: Richening up WOT afr with Dhp 
    Moderator dsmuts's Avatar
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    I'm on a stock tune with ported heads s1x headers and a 3.4 so I'm sure my stuff is off I'll do a scan tonight if i get around to it
    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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  11. #11 Re: Richening up WOT afr with Dhp 
    Turbo is the way to go. Fivefingerdeathpunch's Avatar
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    I thought 01+ cars need the rear o2 atleast plugged in but then the cat codes just turned off.

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  12. #12 Re: Richening up WOT afr with Dhp 
    Moderator dsmuts's Avatar
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    It's fine without it. I tuned the code out and it never gets really rich while driving or anything
    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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  13. #13 Re: Richening up WOT afr with Dhp 
    GXP Level Member GTPpower's Avatar
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    What injectors are you running?

    What is your commanded AFR?


    2001 GTP Drag Car - XPZ, Tischler heads, Upsidedown M90 IC'd, e85, Gen V, 2.3 w/ 5%OD
    2005 F350 6.0 - studded, deleted, tuned
    2001 GTP - cam, headers, nitrous, stock trans - 11.83 @ 116 <$2k in mods - sold
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  14. #14 Re: Richening up WOT afr with Dhp 
    Turbo is the way to go. Fivefingerdeathpunch's Avatar
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    Quote Originally Posted by GTPpower View Post
    What injectors are you running?

    What is your commanded AFR?
    Being that its a stock tune, prolly 12.4, then factor in all the adders and on most cars you'll see 10.5 to 11.5.

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  15. #15 Re: Richening up WOT afr with Dhp 
    Moderator dsmuts's Avatar
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    Stock injectors. Commanded afr says 14.7
    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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  16. #16 Re: Richening up WOT afr with Dhp 
    Turbo is the way to go. Fivefingerdeathpunch's Avatar
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    Look in your Base AFR vs ECT table, that where it wll go when you hit PE.

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  17. #17 Re: Richening up WOT afr with Dhp 
    GXP Level Member GTPpower's Avatar
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    Quote Originally Posted by dsmuts View Post
    Stock injectors. Commanded afr says 14.7
    Your injectors are too small.

    What are you commanding at WOT?


    2001 GTP Drag Car - XPZ, Tischler heads, Upsidedown M90 IC'd, e85, Gen V, 2.3 w/ 5%OD
    2005 F350 6.0 - studded, deleted, tuned
    2001 GTP - cam, headers, nitrous, stock trans - 11.83 @ 116 <$2k in mods - sold
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  18. #18 Re: Richening up WOT afr with Dhp 
    GXP Level Member GTPpower's Avatar
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    Quote Originally Posted by Fivefingerdeathpunch View Post
    Being that its a stock tune, prolly 12.4, then factor in all the adders and on most cars you'll see 10.5 to 11.5.
    Gee, thanks.


    2001 GTP Drag Car - XPZ, Tischler heads, Upsidedown M90 IC'd, e85, Gen V, 2.3 w/ 5%OD
    2005 F350 6.0 - studded, deleted, tuned
    2001 GTP - cam, headers, nitrous, stock trans - 11.83 @ 116 <$2k in mods - sold
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  19. #19 Re: Richening up WOT afr with Dhp 
    Moderator dsmuts's Avatar
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    I have it at 11.78 right now. It was at 12.4 It's not leaning out anymore in the upper rpms but I'll do a scan and see what my idc is and see how my injectors are looking.
    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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  20. #20 Re: Richening up WOT afr with Dhp 
    Turbo is the way to go. Fivefingerdeathpunch's Avatar
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    Quote Originally Posted by GTPpower View Post
    Gee, thanks.
    Hey, you asked.......

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