Please evaluate my afr..TIA
08-06-2007, 11:10 AM
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Please evaluate my afr..TIA
should i be concern about the afr? i'm not worried about the hp/tq number just the afr. TIA
Modified by 3rdgenLS at 8:30 PM 8/8/2007
Modified by 3rdgenLS at 8:30 PM 8/8/2007
08-06-2007, 11:20 AM
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Re: (SOHCD16y8)
make sure its around 11.5:1-11.8:1
afr is not the only clue that a motor is going tho, if you are concerned then i would suggest using an EGT gauge.
afr is not the only clue that a motor is going tho, if you are concerned then i would suggest using an EGT gauge.
08-06-2007, 11:26 AM
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Re: (SOHCD16y8)
i was comparing my graph with my older one and it doesn't pass the red line. this graph seems is leaning out a bit below 3.3 rpm.
08-06-2007, 11:30 AM
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Re: (3rdgenLS)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 3rdgenLS »</TD></TR><TR><TD CLASS="quote">i was comparing my graph with my older one and it doesn't pass the red line. </TD></TR></TABLE>
the red line looks to be at 13.0:1
was the old graph an all motor setup? all motor and turbo setups are very different when it comes to AFR tuning. i would hope a turbo setup never went leaner then 13.0:1 on a daily driver.
the red line looks to be at 13.0:1
was the old graph an all motor setup? all motor and turbo setups are very different when it comes to AFR tuning. i would hope a turbo setup never went leaner then 13.0:1 on a daily driver.
08-06-2007, 11:36 AM
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Re: (Reed)
the old graph and this recent one are both fi. the only difference is i installed a 255 hp fuel pump, replaced piston rings and bearings.
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08-06-2007, 11:52 AM
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Re: Please evaluate my afr..TIA (3rdgenLS)
Looks fine. How much boost are you making from 2800RPM - 3500RPM? I would be more worried about the dyno's wideband usage and filter upkeep, haha
08-06-2007, 12:34 PM
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Re: Please evaluate my afr..TIA (alpha)
ok, i'm convinced that the afr is fine. 
the boost is at about 3 to 5psi between those rpm range.
the boost is at about 3 to 5psi between those rpm range.
08-06-2007, 12:44 PM
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Re: Please evaluate my afr..TIA (3rdgenLS)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 3rdgenLS »</TD></TR><TR><TD CLASS="quote">ok, i'm convinced that the afr is fine. the boost is at about 3 to 5psi between those rpm range.
</TD></TR></TABLE>
as you should be. looks fine to me
the boost is at about 3 to 5psi between those rpm range. </TD></TR></TABLE>
as you should be. looks fine to me
08-06-2007, 12:47 PM
#11
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Re: Please evaluate my afr..TIA (3rdgenLS)
its fine lol
i refuse to use those damn air fuel pump things. they very sooo much car to car and you seem to have to replace the filter damn near every time you use it, which nobody does. thats assuming that they are using that here lol
power/torque drops like crazy after 5500....whats the set up?
i refuse to use those damn air fuel pump things. they very sooo much car to car and you seem to have to replace the filter damn near every time you use it, which nobody does. thats assuming that they are using that here lol
power/torque drops like crazy after 5500....whats the set up?
08-06-2007, 01:12 PM
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Re: Please evaluate my afr..TIA (Turbo-charged)
yeah..it was my internal wastegate being shut. so, that might be because of the boost cut, which is set @ around 10 pounds, i got that problem fixed and also installed a mbc and lowered the boost @ 8 pounds (which i assume is fine after the tune) and now the boost is pretty steady @ 8 pounds after 5.5 rpm.
08-06-2007, 01:34 PM
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Re: Please evaluate my afr..TIA (Turbo-charged)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Turbo-charged »</TD></TR><TR><TD CLASS="quote">its fine lol
i refuse to use those damn air fuel pump things. they very sooo much car to car and you seem to have to replace the filter damn near every time you use it, which nobody does. thats assuming that they are using that here lol
power/torque drops like crazy after 5500....whats the set up?</TD></TR></TABLE>
yea i agree i've gotten some screwed up readings to those compared to widebands i put in the downpipe.
i refuse to use those damn air fuel pump things. they very sooo much car to car and you seem to have to replace the filter damn near every time you use it, which nobody does. thats assuming that they are using that here lol
power/torque drops like crazy after 5500....whats the set up?</TD></TR></TABLE>
yea i agree i've gotten some screwed up readings to those compared to widebands i put in the downpipe.
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