afr w 2.6?
well i use to see well over 151 with my 2.6.... i live in miami... but ur timing is on the floor... 15 and 11* of timing... i do not recommend the 2.6 without meth..... u can make just as much power with a 2.8 and a good tune.... u might have a little less tq but u can run more consistant.... my $.02
i did a 3rd gear pull on the highway today. there was a good gap between me and the cars infront so i figured why not. everything looked good on the scan. no kr. the afr was reading a lil rich like 11.6 but its a little warmer and humid today.
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well i diddnt put the 2.6 back on until a couple days ago. it was just to hot out to run it before.
so now i have the 2.6 on and im trying to get it dialed in with my pump gas tune.
first thing i did was make sure everything was reading good with the 2.8 tune(dd tune). it was running a little lean due to the weather changing. was commamding 11.8 was reading 12.2 . so i changed my commanded afr to 11.4 to compensate for the weather.
so now its back to 11.8 sometimes 11.7.
i go home swap pullies and take it back out. do a couple of pulls by the lake and afr is 12.1/12.2. so i took 12.2/11.4 =x and changed the maf airflow vs output freq from 6000hz up multiplying it by x. now its read ing 11.6 11.7 with a little kr.
heres the log
so since it was a little rich after the adjustment i copied the 2.8 maf back and re adjusted using 12.0/11.4=x
heres the log
so now afr is right where i want it 11.7 11.8. still some kr. and i noticed that my ltft was at -2.3 this time.
what would make the ltft change? i diddnt change anything but the maf adjustment. kinda confused.
any ides what the kr could be from?
so now i have the 2.6 on and im trying to get it dialed in with my pump gas tune.
first thing i did was make sure everything was reading good with the 2.8 tune(dd tune). it was running a little lean due to the weather changing. was commamding 11.8 was reading 12.2 . so i changed my commanded afr to 11.4 to compensate for the weather.
so now its back to 11.8 sometimes 11.7.
i go home swap pullies and take it back out. do a couple of pulls by the lake and afr is 12.1/12.2. so i took 12.2/11.4 =x and changed the maf airflow vs output freq from 6000hz up multiplying it by x. now its read ing 11.6 11.7 with a little kr.
heres the log
so since it was a little rich after the adjustment i copied the 2.8 maf back and re adjusted using 12.0/11.4=x
heres the log
so now afr is right where i want it 11.7 11.8. still some kr. and i noticed that my ltft was at -2.3 this time.
what would make the ltft change? i diddnt change anything but the maf adjustment. kinda confused.
any ides what the kr could be from?
I'm running a 2.7 on 91 octane for my DD tune:
CMD'ing 11.6 afr, 16* of timing is set (max 17* @ 11.6) (Tuned it in the spring at night 55-65* dry desert weather conditions)
The summer weather has been messing w/ my fuel trims as well, depending on the night my fueling will dip into 11.2-11.1 area. Just reset your fuel trims and take it for a spin until it settles.
Apparently the LSJ cannot compensate for fluctuating temperatures via any table; so find a happy medium if you wanna DD the 2.6.
----
As for your car leaning out to 12.6, your fine so long as you keep knock at bay, EGTs, and IAT2s under control.
I've ran much leaner conditions on double the amount of timing your throwing at it on a 90/10 meth mix, without any knock.
You should probably run a tad bit richer on a 2.6 pulley w/ pump gas. Try the low 11s, until you can find a happy medium for the fluctuating changes in humidity and air temperatures.
I'm running a 2.7 on 91 octane for my DD tune:
CMD'ing 11.6 afr, 16* of timing is set (max 17* @ 11.6) (Tuned it in the spring at night 55-65* dry desert weather conditions)
The summer weather has been messing w/ my fuel trims as well, depending on the night my fueling will dip into 11.2-11.1 area. Just reset your fuel trims and take it for a spin until it settles.
Apparently the LSJ cannot compensate for fluctuating temperatures via any table; so find a happy medium if you wanna DD the 2.6.
----
As for your car leaning out to 12.6, your fine so long as you keep knock at bay, EGTs, and IAT2s under control.
I've ran much leaner conditions on double the amount of timing your throwing at it on a 90/10 meth mix, without any knock.
I'm running a 2.7 on 91 octane for my DD tune:
CMD'ing 11.6 afr, 16* of timing is set (max 17* @ 11.6) (Tuned it in the spring at night 55-65* dry desert weather conditions)
The summer weather has been messing w/ my fuel trims as well, depending on the night my fueling will dip into 11.2-11.1 area. Just reset your fuel trims and take it for a spin until it settles.
Apparently the LSJ cannot compensate for fluctuating temperatures via any table; so find a happy medium if you wanna DD the 2.6.
----
As for your car leaning out to 12.6, your fine so long as you keep knock at bay, EGTs, and IAT2s under control.
I've ran much leaner conditions on double the amount of timing your throwing at it on a 90/10 meth mix, without any knock.
i dont really want to dd with the 2.6. my intentions with it are to swap it out w my 2.8 and run it at the track.
the leanest ive been able to go with the 2.8 and 110racegas without seeing kr is 12.4 and 23.5* timing. i havent really messed with the timing tables( mainly because i dont know what to do for the most part) so not sure if i can get anymore timing out of it.
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From: Los Angeles, CA
thank you for your input.
i dont really want to dd with the 2.6. my intentions with it are to swap it out w my 2.8 and run it at the track.
the leanest ive been able to go with the 2.8 and 110racegas without seeing kr is 12.4 and 23.5* timing. i havent really messed with the timing tables( mainly because i dont know what to do for the most part) so not sure if i can get anymore timing out of it.
i dont really want to dd with the 2.6. my intentions with it are to swap it out w my 2.8 and run it at the track.
the leanest ive been able to go with the 2.8 and 110racegas without seeing kr is 12.4 and 23.5* timing. i havent really messed with the timing tables( mainly because i dont know what to do for the most part) so not sure if i can get anymore timing out of it.
If you feel like messing around, play w/ the 3-6k rpm range. You'll be amazed at the kind of fueling n spark you can achieve in the mid-range.
from 6500k and up I see knock on a 2.7 if fueling is anymore than 12.2 afr w/ 24* of timing.
Not sure if I'm seeing cooler combustion than you due to the meth (90/10 mix) , but you havnt seen anything yet.
i guess i have a freak cuz i had a 2.8 seeing about 12.0 afr with innovate lc1 and i had 25* of timing with virtually no knock... i got the 2.6 on now with water meth and im running 25* of timing with no knock and afr about 12.2... water meth is the truth
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From: Los Angeles, CA
Do you run 25* from 3-7k?
I noticed engine load past 6500 rpm requires me to lower a degree of timing usually.
METH IS DEFINATELY TRUTH SIR
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E85>>>>. methanol
But, send me the scans Aaron. Wickedss2005@gmail.com and I'll look it over. Do you have HPTPro or std? I can set you up with a way to read AFR thru HPTstd using the AC sensor. Works wonderfully.
But, send me the scans Aaron. Wickedss2005@gmail.com and I'll look it over. Do you have HPTPro or std? I can set you up with a way to read AFR thru HPTstd using the AC sensor. Works wonderfully.
E85>>>>. methanol
But, send me the scans Aaron. Wickedss2005@gmail.com and I'll look it over. Do you have HPTPro or std? I can set you up with a way to read AFR thru HPTstd using the AC sensor. Works wonderfully.
But, send me the scans Aaron. Wickedss2005@gmail.com and I'll look it over. Do you have HPTPro or std? I can set you up with a way to read AFR thru HPTstd using the AC sensor. Works wonderfully.
if i went e85 can i change back to 94 say if i go on a long trip and dont want to get stuck not being able to find e85?
i have hptpro. i havent been able to figure out how to get the afr's to read the same tho.my guage reads 11.8 and hpt reads 12.2
also next years plans include a turbo and hopefully with that come lower iats.
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