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-   -   boost afr (https://www.homemadeturbo.com/forced-induction-7/boost-afr-84291/)

lilpooh21186 09-25-2007 08:25 PM

boost afr
 
SO i tryed to search could not find a good answer what is a good afr in boost i generly hold 12.8 then when vtec engage i get13.1-13.3 which is still showing up rich on the widband? is this safe my motor is a b16 this is about 9-10 psi o yea this is on a basemap but my first time on the track i refuse to run a shitty time. Crome owns me!!!!!!!!!!

si 1 09-25-2007 09:03 PM

Re: boost afr
 
you could lean it out alittle in the higher rpms but if you really dont know what you doing its pretty good where its at. normally 12:1 is what they say for forced apps but it all depends on the setup and conditions. SO BE CAREFULL

the 13th round 09-26-2007 12:07 PM

Re: boost afr
 
isnt 14.7 the ideal afr?

Cyberdx16 09-26-2007 02:19 PM

Re: boost afr
 
seems pretty lean to me... you might want to richen a/f in boost around 12:1 to high 11s to be safe, especially if your noobie to tuning. Whats timing at as well?

Oscar 09-26-2007 02:55 PM

Re: boost afr
 

Originally Posted by the 13th round
isnt 14.7 the ideal afr?

yea, go ahead and do that to a boosted setup.

lilpooh21186 09-26-2007 05:31 PM

Re: boost afr
 

Originally Posted by Cyberdx16
seems pretty lean to me... you might want to richen a/f in boost around 12:1 to high 11s to be safe, especially if your noobie to tuning. Whats timing at as well?

i have no idea its xenocron basemap when i logged it the highst time i saw was 27 deg i belive

the 13th round 09-26-2007 07:51 PM

Re: boost afr
 

Originally Posted by d112crzy
yea, go ahead and do that to a boosted setup.

guess you missed the question mark at the end dipshit.

b18. 09-26-2007 11:26 PM

Re: boost afr
 

Originally Posted by the 13th round
guess you missed the question mark at the end dipshit.

You need more fuel with more air, but yea stoich for most naturally aspirated engines is 14.7. When you have hot pressurized air and no fuel you get crazy crazy lean burn exploshun deathkibab. :'(

circleburner 09-27-2007 03:08 AM

Re: boost afr
 
14.7 is stoich. Turbo's run hotter so they have to runner richer.

So is there a Turbo Stoich?

HMTguy 09-27-2007 03:10 AM

Re: boost afr
 

Originally Posted by circleburner
14.7 is stoich. Turbo's run hotter so they have to runner richer.

So is there a Turbo Stoich?

You are a ------- idiot, go kill yourself.

------- loser.


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