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Old 06-13-2018, 08:36 AM   #1
1LEric
 
Drives: 2015 Camaro 1LE
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AFR Target On 93pump plus 100%Meth

so I have a 2015 1LE lsa blower on 2.5 pulley around 12ish psi , btr cam , id1050x , kb bap, longtubes , rotofab , aem meth 1000c nozzle 100% meth set to start around 4psi full spray by 12psi, ive been doing a lot of research on meth tunig trying to get this car dialed in and I think im pretty close check out this log tell me what you guys think ! on log 96 I had a slight part throttle knock but that's it pretty much consistent .82 lambda across the board and 20* timing am I pushing this too far ? Iím probably gonna fatten it up closer to .78 but not sure on the timing .
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Old 06-14-2018, 08:56 AM   #2
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I'd shot for .78 (11.5 AFR)
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Old 06-14-2018, 10:14 AM   #3
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I'd shot for .78 (11.5 AFR)
Yes definitely gonna richen it up . Still unsure about 20* Iím leaving it at 19* for now. I found this meth tuning chart seems to be pretty accurate as far as afr values , Because when I switch my logs back to regular afr Iím in the mid 10s for afr but much leaner in lambda something a lot of people donít understand when I ask them about it.
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Old 06-14-2018, 04:14 PM   #4
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Yes definitely gonna richen it up . Still unsure about 20* Iím leaving it at 19* for now. I found this meth tuning chart seems to be pretty accurate as far as afr values , Because when I switch my logs back to regular afr Iím in the mid 10s for afr but much leaner in lambda something a lot of people donít understand when I ask them about it.
I use this chart...
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Old 06-14-2018, 05:08 PM   #5
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I use this chart...
Iíve seen that one as well but it doesnít account for meth blended with 93% @ approximately 10% The stoich value is something like 13.87
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Old 06-14-2018, 06:04 PM   #6
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Iíve seen that one as well but it doesnít account for meth blended with 93% @ approximately 10% The stoich value is something like 13.87
Normally you tune WOT at 11.5 regardless of your running 50% or 100% meth. Your AFR should ot change.
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Old 06-15-2018, 07:50 AM   #7
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Normally you tune WOT at 11.5 regardless of your running 50% or 100% meth. Your AFR should ot change.
Exactly. The wideband doesn't know what kind of fuel is being burnt it just measures lambda and converts it to afr. 20* of timing seems like a lot.
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Old 06-15-2018, 08:06 AM   #8
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Exactly. The wideband doesn't know what kind of fuel is being burnt it just measures lambda and converts it to afr. 20* of timing seems like a lot.
Gotcha I appreciate it Iím working it down to .78 last nights logs show .79-.80 average so Iím getting close And Iíve settled at 19* as it has never showed any signs of KR
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