Possible to raise AFR in closed loop?
03-10-2006, 06:47 AM
#21
FormerVendor
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I'm sorry guys but somebody has to say it. F & Y bodies = Performance 
Hybrid, (spayed or neutered) =
Seriously, sounds like you need a beater to poot around. Sounds cheaper than risking a potential hazard.
Nice thread tho, good info.
Hybrid, (spayed or neutered) =
Seriously, sounds like you need a beater to poot around. Sounds cheaper than risking a potential hazard.
Nice thread tho, good info.
03-10-2006, 08:54 AM
#22
TECH Resident
Had an emisions test, Passed on C02 and the hydrocarbons, but something called Lambda was out of range, ment to be between 1.000 and 1.090. That Toyota emmisions documents was interesting reading but what is Lambda? Does this mean my cats are dead? i think I been feeding them too much fuel after not a brilliant tune after incresing the injector sizes probably didn't help. Can the Lambda reading be fixed with new cats?
03-10-2006, 04:01 PM
#23
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it is your exact a/f ratio. a lambda sensor is a wideband 02 sensor 1.0 is 14.7:1. less than 1.0 is rich and greater is lean. so take your number 1.09X14.7=16.023:1 air fuel ratio. get it
03-10-2006, 08:36 PM
#25
TECH Senior Member
Originally Posted by RedWS6 00
... but what is Lambda?
or
1/lambda = EQ = STOICH/AFR
rich: lambda < 1 or EQ > 1
lean: lambda > 1 or EQ < 1
For gasoline/petrol, STOICH is 14.63 air-to-fuel.
03-10-2006, 08:58 PM
#26
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Originally Posted by mr2guru
What tuning software do you have?
I know in HPtuners my lean cruise feature is enabled. Just plug the right numbers into the tables and it works great.
I know in HPtuners my lean cruise feature is enabled. Just plug the right numbers into the tables and it works great.
03-10-2006, 10:41 PM
#27
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Originally Posted by muncie21
That would be interesting to see. I heard the American ECUs had this feature disabled in the machine code
