For those experienced in GEN5 Z06 tuning, what AFR seems to be the sweet spot? 11.5?
Also, I'm going to plumb-in an EGT probe right at the collector on headers so I'll be able to see the correlation between the temps and AFR.
Thx
For those experienced in GEN5 Z06 tuning, what AFR seems to be the sweet spot? 11.5?
Also, I'm going to plumb-in an EGT probe right at the collector on headers so I'll be able to see the correlation between the temps and AFR.
Thx
why don't you just download z06 stock tune from repository and start there?
2003 MY Z06 3.3 liter whipple ...sold at around 1000 rwhp
wip 2015 Silverado w/2.9 Whipple (phase 1 completed) phase 2 in the works
12.25 - 12.50
these are direct injected not port injected
WOW...will 12,25-12.5 at wot be safe AND produce more power?
2003 MY Z06 3.3 liter whipple ...sold at around 1000 rwhp
wip 2015 Silverado w/2.9 Whipple (phase 1 completed) phase 2 in the works
Higgs is right on the money!!!
Email Tunes, [email protected]
96 TA Blown/Stroked, 4L80E/Fab 9
15 C7 A8 H/C 2.3 Blower/PI
14 Gen 5 Viper
Custom Mid Engine chassis, AKA GalBen C
is this based on stoich being 14.1 ?
2003 MY Z06 3.3 liter whipple ...sold at around 1000 rwhp
wip 2015 Silverado w/2.9 Whipple (phase 1 completed) phase 2 in the works
.83-.85 lambda that will answer your question
Email Tunes, [email protected]
96 TA Blown/Stroked, 4L80E/Fab 9
15 C7 A8 H/C 2.3 Blower/PI
14 Gen 5 Viper
Custom Mid Engine chassis, AKA GalBen C
all the oem tunes that I downloaded had stoich at 14.1 Is that because of the gas alcohol content?
I'm in nth Florida...93 octane, but I believe 10% ethanol.....so 14.1 is good (stoich) and 11.7-12 at wot??
2003 MY Z06 3.3 liter whipple ...sold at around 1000 rwhp
wip 2015 Silverado w/2.9 Whipple (phase 1 completed) phase 2 in the works
14.68x.85=12.48
14.11x.85=11.99
Don't think about AFR, look at units of lambda...
Say you have a flex fuel sensor and you have e50 in the tank.... What AFR value will your afr Guage show at idle..... This will help you understand better
Email Tunes, [email protected]
96 TA Blown/Stroked, 4L80E/Fab 9
15 C7 A8 H/C 2.3 Blower/PI
14 Gen 5 Viper
Custom Mid Engine chassis, AKA GalBen C
I understand most of this, what I am asking is whether I should be using the 14.1 that was oem on my vehicle and all the other oem tunes that I downloaded, or 14.7 ? which I assume is what Higgs based his reply on. I only use afr for talk, I walk with lambda....lolOriginally Posted by Ben Charles
thx
2003 MY Z06 3.3 liter whipple ...sold at around 1000 rwhp
wip 2015 Silverado w/2.9 Whipple (phase 1 completed) phase 2 in the works
Set stoich to whatever fuel your using..... If you have NON ethanol Gas set it to 14.68
Email Tunes, [email protected]
96 TA Blown/Stroked, 4L80E/Fab 9
15 C7 A8 H/C 2.3 Blower/PI
14 Gen 5 Viper
Custom Mid Engine chassis, AKA GalBen C
ok...just checking to be sure....
thx again
2003 MY Z06 3.3 liter whipple ...sold at around 1000 rwhp
wip 2015 Silverado w/2.9 Whipple (phase 1 completed) phase 2 in the works
Yes lambda .83
When I speak in afr it's based on 14.68 since that's what everyone's brain is programmed to for stoich even though stoich today for pump is usually 14.1
Whoa!Thanks for all of the responses! (more than I bargained for!)
Thanks to all! I'll have some data-logs to share soon....and likely ask for more help.
out here in California on 91, I've had better luck targeting a little more rich Lambda, more like .80ish... it allows me to get a little more timing in it and a little more power. Plus if the customer is tracking the car (road course) or sustained highway pulls, the cats (if the car still has them) will appreciate the added fuel and more timing.
Owner of Cunningham Motorsports
06 z06
2016 camaro
68 Camaro
2014 e63 amg
07 LBZ Duramax
Thanks for the great content and suggestions! It's for a road course car, so conservative (cool) is key. Highflow cats are in the ARH headers, but may swap out for catless if the heat becomes a problem, which is another reason I'm intending to watch EGT's.
Agreed, same with our 93 E-10, I spent some time running up and down the PE command, and 1.25 EQ or .80 lambda or 11.7 AFR whichever you like, is where we are seeing best overall power.
Ted.
1.25 is 11.28 AFR on E10.....
That is why I log in Lambda on my superflow dyno using AFM-1000 widebands.
That brings up another whole conversation.
If you put 1.25 in the PE table the log reports commanded lambda of .80 regardless of what you put in the Stoich table.
Adjusted stoich directly effects fueling by itself.... So if your actually using 14.1 as stoich and a 1.25 PE your are targeting 11.2....
I personally would never use 1.25 PE value on a Di blower setup....
Then again you guys with crappy fuel are trying to keep things cool.. To each there own
Email Tunes, [email protected]
96 TA Blown/Stroked, 4L80E/Fab 9
15 C7 A8 H/C 2.3 Blower/PI
14 Gen 5 Viper
Custom Mid Engine chassis, AKA GalBen C
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