$12 to $12p conversion

For discussion and distribution of custom code and hacks
Site Admin
User avatar
Posts: 6223
Joined: Sat Feb 28, 2009 8:34 pm

Re: $12 to $12p conversion

Postby antus » Fri Jan 17, 2020 6:29 pm

Yes pe and ae are the same thing. The AFR is theory only, not really changed as part of the tune. the VE maps the pressure in the manifold to the amount of air that ends up in the combustion chamber. In an ideal world all the theory would perfectly match reality and fueling would be perfect but because of minor errors in configuration, variance in pressures and parts, the theory doesnt perfectly match reality. Once youve set everything up how it should be measuring target afr vs wideband and modifying VE is the normal way to dial in the fueling. You should do this after your injector rate, dead times etc are setup.
Have you read the FAQ? For lots of information and links to significant threads see here: viewtopic.php?f=7&t=1396

Posts: 11
Joined: Mon Jan 06, 2020 11:39 am

Re: $12 to $12p conversion

Postby Matadore » Sat Jan 18, 2020 7:06 pm

Sorry man, think I confused things with that question.

What I meant is, to correct the VE table being too high, can I change the injector flow 0.1 higher and then reduce the entire VE table a known amount and not have it effect the actual tune ie. AFR/wideband reading? Or is there not a direct relationship there and I’m going to have to log and tidy up the whole table after changing the injector flow

Site Admin
User avatar
Posts: 6223
Joined: Sat Feb 28, 2009 8:34 pm

Re: $12 to $12p conversion

Postby antus » Sat Jan 18, 2020 8:45 pm

Im not sure if its up or down off the top of my head but yes you can and sometimes need to do that.
Have you read the FAQ? For lots of information and links to significant threads see here: viewtopic.php?f=7&t=1396

Posts: 11
Joined: Mon Jan 06, 2020 11:39 am

Re: $12 to $12p conversion

Postby Matadore » Mon Jan 20, 2020 10:16 am

if anyone could share the relationship between the Injector flow and VE table that would be awesome! if i raise the injector flow 0.1 how far should i lower the VE table to maintain the current tune?

please thank you!

Site Admin
User avatar
Posts: 6223
Joined: Sat Feb 28, 2009 8:34 pm

Re: $12 to $12p conversion

Postby antus » Mon Jan 20, 2020 12:31 pm

Its not really a relationship, it is a bit hacky, but it can be necessary. I'd suggest trying it then look on the wideband. You could look at wideband AFRs, then adjust your VE to put the peaks where you need them, then realtime the injector rate to bring the wideband data back to where it was.
Have you read the FAQ? For lots of information and links to significant threads see here: viewtopic.php?f=7&t=1396

Previous

Return to Custom Code

Who is online

Users browsing this forum: No registered users and 0 guests