AFR Thread - Page 2 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

realcanuk · 05-26-2013, 06:43 AM

Quote:

Originally Posted by Badbubba

Guessing E10 in OH? Just remember, the stoich for E10 is lower than 100% gas. So your desired afr on E10 will be a lower value, than straight gas afr. Doesn't necessarily mean your running too rich. Change the stoich on you gauge and see where your at for wot. When people list there afr's, the stoich, type of gas, is needed to be known. If your desired afr for straight gas is 12.5, then for E10 it would be 12.0. It's not really more rich, it's just relative to the stoich. It is the same lamba .85.

Your 11 afr set at 14.7 should be 10.5 for E10. It's not running richer than you think, just different bc of different stoich. Still the same lamda. Wide bands are actually lambda meters that then convert to afr based on your stoich.

This is why I tune and monitor in lambda. So much easier.

mercedestech · 05-26-2013, 06:55 AM

Our pumps in Ohio just state up to 10% Ethanol. They don't specifically state E10. I'm going to order one of the fuel test kits shown in this thread and see where it is at so I'm sure. Thanks again for all of the help guys!

Iam Broke · 05-26-2013, 07:23 AM

Quote:

Originally Posted by realcanuk

This is why I tune and monitor in lambda. So much easier.

Been tuning in Lambda for years. Alternate fuels are much, much easier this way.

9-10 psi boost depending on temps, .77 Lambda PE (or 1.3 PE in GM terms), E85, 16-17* advance at 6400 rpm depending on IAT's. Can prob go more, work in progress.

Mchlgrrsn · 05-26-2013, 07:37 AM

Quote:

Originally Posted by Iam Broke

Been tuning in Lambda for years. Alternate fuels are much, much easier this way.

9-10 psi boost depending on temps, .77 Lambda PE (or 1.3 PE in GM terms), E85, 16-17* advance at 6400 rpm depending on IAT's. Can prob go more, work in progress.

Love your location. There is no dark side of the moon really, matter of fact it's all dark. Lol. I may play that album (mp3 nowadays) later after I get buzzed

mercedestech · 05-26-2013, 08:21 AM

I have a prosport A/F gauge and there is no way to change the scaling. You can calibrate it (which I'm assuming is a free air calibration) and that's it. It does have a narrow band and wideband output that I could tie into my hp tuners pro and just work off lambda as stated. So .78 lamda is what I will be looking for with Ohio fuel at roughly 9 psi of boost?

Iam Broke · 05-26-2013, 08:45 AM

I'd say .78-.79 is a good starting point for E10.

dan0617 · 05-26-2013, 10:15 AM

If you can't change your gauge setting and you are running 10% ethanol, divide your gauge reading by 14.7, then times it by 14.2. Remember then that you are looking for about 11.1 at WOT.

Badbubba · 05-26-2013, 08:51 PM

Quote:

Originally Posted by mercedestech

Our pumps in Ohio just state up to 10% Ethanol. They don't specifically state E10. I'm going to order one of the fuel test kits shown in this thread and see where it is at so I'm sure. Thanks again for all of the help guys!

Ebay. $$10-12.

Badbubba · 05-26-2013, 09:03 PM

Quote:

Originally Posted by mercedestech

I have a prosport A/F gauge and there is no way to change the scaling. You can calibrate it (which I'm assuming is a free air calibration) and that's it. It does have a narrow band and wideband output that I could tie into my hp tuners pro and just work off lambda as stated. So .78 lamda is what I will be looking for with Ohio fuel at roughly 9 psi of boost?

Maybe start alittle richer and work your way back to watch for knock/detonation along with your timing. Nothing that you don't already know. By no means am I a tuner. Still learning the basics. Just rather be safe.

TRC-SS · 05-27-2013, 10:07 AM

Im running 10.9 at WOT with the Canned SLP tune. Just did the supercharger install, no headers, no intake, but it does have HF cats and 3" exhaust. Safe tune and made 502rwhp

mercedestech · 05-27-2013, 11:46 AM

Just ordered my ethanol test kit...$12 great deal.

Nitroman28 · 05-28-2013, 10:20 PM

All you need is a 10ml or 100ml graduated cylinder. Most hobby shops carry them. Fill the 10ml with 1ml water- 9ml Gas shake and let set for a few mins. Water will separate then take the number where the water line stops and subtract 1ml for the water and the remaining is the ethanol. Exp: The water line goes to 2ml mark, 2ml -1ml(water)= 1ml ethanol = 10%.

Don't have a graduated cylinder? Take a glass at least 3in tall. Take a tape measure and from the bottom mark it every 1/4 up to 2 1/2in. You should have ten marks now. Add water up to the first mark then fill the rest with gas. Shake and let set a few mins. Each 1/4in mark with be 10%. Like before if the water mark is at the second line it would be 20%-10% for the water you added. So you would have 10% ethanol.

mercedestech · 05-28-2013, 10:38 PM

Quote:

Originally Posted by Nitroman28

All you need is a 10ml or 100ml graduated cylinder. Most hobby shops carry them. Fill the 10ml with 1ml water- 9ml Gas shake and let set for a few mins. Water will separate then take the number where the water line stops and subtract 1ml for the water and the remaining is the ethanol. Exp: The water line goes to 2ml mark, 2ml -1ml(water)= 1ml ethanol = 10%.

Don't have a graduated cylinder? Take a glass at least 3in tall. Take a tape measure and from the bottom mark it every 1/4 up to 2 1/2in. You should have ten marks now. Add water up to the first mark then fill the rest with gas. Shake and let set a few mins. Each 1/4in mark with be 10%. Like before if the water mark is at the second line it would be 20%-10% for the water you added. So you would have 10% ethanol.

Guess I just wasted $12! Thanks for the info as always nitro!

Nitroman28 · 05-28-2013, 11:09 PM

Quote:

Originally Posted by mercedestech

Guess I just wasted $12! Thanks for the info as always nitro!

It's not perfect math but it will get you close. To get a closer reading mark the 10ml cylinder with another ml mark so you can add 10ml of gas 1 ml of water. You can use a syringe to. Find a 12CC syringe add 1 cc water, 10cc gas. Shake and let set. Same math, if the water line is at 2cc subtract 1cc(water) which leaves 1cc eth for a total of 10%. You can get a syringe at any feed store or Tractor Supply..

05-26-2013, 06:55 AM	#16
mercedestech Drives: 2010 2SS/RS IOM,2013 Mercedes ML350 Join Date: May 2010 Location: Akron Posts: 507	Our pumps in Ohio just state up to 10% Ethanol. They don't specifically state E10. I'm going to order one of the fuel test kits shown in this thread and see where it is at so I'm sure. Thanks again for all of the help guys! __________________ 2010 Camaro 2SS/RS Whipple 2.9L, Rotofab CAI and coil covers, XS Power LT's and full 3" exhaust, Vengeance kaotic cam package (trunion kit,dual springs,titanium retainers,hardened pushrods,c5r chain,ls2 tensioner, melling oil pump) Mgw shifter, 160 deg Tstat, prosport gauges, LPE dual pump, FIC 60lb injectors, level 5 DSS Axles 1994 Z28 MSD optispark, K&N CAI, Magnaflow y pipe..Cat..and cat back. 1998 wheels, custom tune(sold ) 1993 Base V6 sold to buy Z28 1994 Purple Pearl V6...sold 1979 Base Car with inline 250ci 6 cyl! My first car in 1989!

05-26-2013, 08:21 AM	#19
mercedestech Drives: 2010 2SS/RS IOM,2013 Mercedes ML350 Join Date: May 2010 Location: Akron Posts: 507	I have a prosport A/F gauge and there is no way to change the scaling. You can calibrate it (which I'm assuming is a free air calibration) and that's it. It does have a narrow band and wideband output that I could tie into my hp tuners pro and just work off lambda as stated. So .78 lamda is what I will be looking for with Ohio fuel at roughly 9 psi of boost? __________________ 2010 Camaro 2SS/RS Whipple 2.9L, Rotofab CAI and coil covers, XS Power LT's and full 3" exhaust, Vengeance kaotic cam package (trunion kit,dual springs,titanium retainers,hardened pushrods,c5r chain,ls2 tensioner, melling oil pump) Mgw shifter, 160 deg Tstat, prosport gauges, LPE dual pump, FIC 60lb injectors, level 5 DSS Axles 1994 Z28 MSD optispark, K&N CAI, Magnaflow y pipe..Cat..and cat back. 1998 wheels, custom tune(sold ) 1993 Base V6 sold to buy Z28 1994 Purple Pearl V6...sold 1979 Base Car with inline 250ci 6 cyl! My first car in 1989!

05-26-2013, 08:45 AM	#20
Iam Broke PHAT B33 Drives: 2012 TF3 Camaro 2SS/RS M6 Join Date: Jun 2012 Location: Dark of the Moon Posts: 1,460 View My Garage	I'd say .78-.79 is a good starting point for E10. __________________ Another 1 of 371 '12 T3 LS3 M6's built.

05-26-2013, 10:15 AM	#21
dan0617 Drives: 2011 Inferno Orange SS Convertible Join Date: Apr 2012 Location: Tyrone, PA Posts: 640 View My Garage	If you can't change your gauge setting and you are running 10% ethanol, divide your gauge reading by 14.7, then times it by 14.2. Remember then that you are looking for about 11.1 at WOT. __________________ 2011 SS IOM Vert. ECS Vortech 13+ psi, Water/Meth, ID850’s, ZL1 pump with MSD Voltage Booster, 2800 stall, LT headers, Drag radials, Drag alignment, Cradle Bushings. A million other supporting mods. Tuned by Ted.

05-27-2013, 10:07 AM	#24
TRC-SS 700RWHP-650TQ Drives: 2011 Forged LS3 Supercharged/Cammed Join Date: Aug 2010 Location: Shrewsbury Massachusetts Posts: 5,269 View My Garage	Im running 10.9 at WOT with the Canned SLP tune. Just did the supercharger install, no headers, no intake, but it does have HF cats and 3" exhaust. Safe tune and made 502rwhp __________________ View Build HERE>>>>>MY 2011 2SS/RS JOURNAL

05-27-2013, 11:46 AM	#25
mercedestech Drives: 2010 2SS/RS IOM,2013 Mercedes ML350 Join Date: May 2010 Location: Akron Posts: 507	Just ordered my ethanol test kit...$12 great deal. __________________ 2010 Camaro 2SS/RS Whipple 2.9L, Rotofab CAI and coil covers, XS Power LT's and full 3" exhaust, Vengeance kaotic cam package (trunion kit,dual springs,titanium retainers,hardened pushrods,c5r chain,ls2 tensioner, melling oil pump) Mgw shifter, 160 deg Tstat, prosport gauges, LPE dual pump, FIC 60lb injectors, level 5 DSS Axles 1994 Z28 MSD optispark, K&N CAI, Magnaflow y pipe..Cat..and cat back. 1998 wheels, custom tune(sold ) 1993 Base V6 sold to buy Z28 1994 Purple Pearl V6...sold 1979 Base Car with inline 250ci 6 cyl! My first car in 1989!

05-28-2013, 10:20 PM	#26
Nitroman28 Drives: 2010 Camaro SS 416/4L80 Join Date: Oct 2010 Location: Arkansas Posts: 1,835 View My Garage	All you need is a 10ml or 100ml graduated cylinder. Most hobby shops carry them. Fill the 10ml with 1ml water- 9ml Gas shake and let set for a few mins. Water will separate then take the number where the water line stops and subtract 1ml for the water and the remaining is the ethanol. Exp: The water line goes to 2ml mark, 2ml -1ml(water)= 1ml ethanol = 10%. Don't have a graduated cylinder? Take a glass at least 3in tall. Take a tape measure and from the bottom mark it every 1/4 up to 2 1/2in. You should have ten marks now. Add water up to the first mark then fill the rest with gas. Shake and let set a few mins. Each 1/4in mark with be 10%. Like before if the water mark is at the second line it would be 20%-10% for the water you added. So you would have 10% ethanol.