And outputs.Quote:
Originally Posted by TAQuickness
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And outputs.Quote:
Originally Posted by TAQuickness
You mean they aren't EPA compliant? :D Think I'll take mine off this weekend too then.:rockon:
Joe - I did a little more intensive logging this morning. The leaness appears to be directly related to the start up friction and start up airflow.
Since we filter out cells less than normal ECT (typically 180* F and less), none of the start up airflow is accounted for in the VE table. Not to mention startup airflow is only there for a short time and if accounted for in the VE table, would throw off hot idle.
But, the MAF reports this extra airflow and it's accounted for.
I'll be tweaking in the realm of {B3632}, {B3628}, & {B3650} for this afternoons drive.
TA, good info, I'll take a look at these.Quote:
Originally Posted by TAQuickness
Am I understanding {B3632} correctly? Let's say I'm commanding a 12.0:1 AFR for a given ECT right after startup (aka EQ=1.22). If the corresponding cell in {B3632} is 0.5, should my wideband read an AFR of 12.5:1 (aka EQ=1.17)?
Is there a reason we would want to subtract these values from the commanded EQ to lean out the mixture after startup?
Why not just command the values in the Open Loop Fueling to start with?
I was wondering this too... I thought it would have been added if using EQ units.Quote:
Originally Posted by SSpdDmon
Commanding the desired EQ in open loop fueling would probably work to, but I'm on OS5 (MAP vs RPM not MAP vs ECT).Quote:
Originally Posted by SSpdDmon
Also, once the startup airflows have expired, your AFR's should line up closely with commanded. There will still be a slight varience as you work your way thru B4307. But this varience should be small enough to live with.
From the descriptions, the tables mentioned above should provide the fueling required to get thru the startup airflows.
If your EQ at startup is 1.00 and you need 1.07 to get thru the start up flows, I you would put -.07 in those tables. Would look like 1.0 -(-0.07) = 1.07
I'll let you know how it goes in about 2 hours.
Show me the money BABY!
It will take a bit more tweaking to get the decay rate's down, but it worked and worked well.
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Originally Posted by SSpdDmon
Quote:
Originally Posted by joecar
Ah, ok, subtract the negative, can do. :cheers:Quote:
Originally Posted by TAQuickness
Quote:
Originally Posted by joecar
Forgot to mention, negative values made a leaner condition. I had to go back and make all my values positive.