Is there a way to change the target lambda of an individual cell on the fuel map?
I’m trying to set up lean afr for cruising, and the issue is that with my setup I have very low vacuum with as low as 25% throttle when cruising/light accel during highway driving. Near wot, essentially.
So I wanted to tune for sub-4000rpm range specifically. That way it has lean for cruise specifically, and isn’t vacuum based.
Since the vtec and non vtec maps use the same vacuum target lambda settings, i can’t make them separate.
Fuel map target lambda - individual targets?
Re: Fuel map target lambda - individual targets?
No you cannot change a single cell like that.
Re: Fuel map target lambda - individual targets?
That is honestly very disappointing. I’d make the argument that the ability to have finer control over the target lambda fuel tables would be not only a good addition, but something that should already be in it.
I’ll have to find another way.
Maybe a 5th gear compensation to lean it out for cruising?
I’ll have to find another way.
Maybe a 5th gear compensation to lean it out for cruising?
Re: Fuel map target lambda - individual targets?
I agree - I do wish there was more than "low / med / high" load settings for target lambda values.itsahonda wrote: ↑Mon Mar 29, 2021 5:43 pm That is honestly very disappointing. I’d make the argument that the ability to have finer control over the target lambda fuel tables would be not only a good addition, but something that should already be in it.
I’ll have to find another way.
Maybe a 5th gear compensation to lean it out for cruising?
Re: Fuel map target lambda - individual targets?
Assuming this is an issue because you are using closed loop by lambda target - I get around it by using the TPS tables to disable closed loop at idle:
then tuning my idle to lambda 1.0. This lets my target my lean cruise without it trimming my idle lean. Note the tight breakpoints 1250-1265; that's as close as the bit math in the cal would let me get to having close loop 'switch on' above 1250.
It's a hack, but it gets the job done.
then tuning my idle to lambda 1.0. This lets my target my lean cruise without it trimming my idle lean. Note the tight breakpoints 1250-1265; that's as close as the bit math in the cal would let me get to having close loop 'switch on' above 1250.
It's a hack, but it gets the job done.
Re: Fuel map target lambda - individual targets?
To make sure I understand what you’re saying:
Setup idle to idle in open loop, and then setup the normal closed loop fuel tables to whatever leaner-cruise settings I want, etc - so it’s like adding another “section” the the fuel tables below a certain rpm...
Not bad man, thanks
Setup idle to idle in open loop, and then setup the normal closed loop fuel tables to whatever leaner-cruise settings I want, etc - so it’s like adding another “section” the the fuel tables below a certain rpm...
Not bad man, thanks