What's a good AFR#?
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From: dont know, they wont let me out
Originally Posted by Jeff_Jeske
On pump for drag racing 11.5:1.
On race for drag racing 12.5:1.
Open track pump 11:1.
On race for drag racing 12.5:1.
Open track pump 11:1.
how about everyday driving, where a nut like me likes to drive hard
what is the bare minimum for the most power on 93?
would 11.5 be satisfactory?
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From: dont know, they wont let me out
Originally Posted by jrsimon27
yep your right 12.5 is leaner then 11.5.
also your question on afr is it when the car is by redline or when full boost comes in at 3500rpm??
also your question on afr is it when the car is by redline or when full boost comes in at 3500rpm??
From what ive read everyone says to richen it up by redline
your thoughts?
The simplest answer is that the best AFR # is the leanest (i.e. highest) # that will not make your engine knock/detonate/pre-ignite. This # varies from car to car and also varies with atmoshperic conditions (i.e. temperature, humidity, altitude).
In my experience, 11.5 was slightly too lean for street use ... I would occassionally get some pulled timing in 4th gear highway pulls. IMO if you want to be safe, keep it at 11.0:1. Assuming a stock turbo (any flavor), you will want to hit that AFR no later than 4000 rpm or so - look at some of Shiv's dyno charts, you'll see what kind of AFR curve he usually shoots for.
l8r)
In my experience, 11.5 was slightly too lean for street use ... I would occassionally get some pulled timing in 4th gear highway pulls. IMO if you want to be safe, keep it at 11.0:1. Assuming a stock turbo (any flavor), you will want to hit that AFR no later than 4000 rpm or so - look at some of Shiv's dyno charts, you'll see what kind of AFR curve he usually shoots for.
l8r)
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these guys are confusing as crap.
if u follow half the advice here ur car might blow lol.careful man...ask someone who knows. and i hope your not tuning it, considering you have to ask what is good a/f ratios.
if u follow half the advice here ur car might blow lol.careful man...ask someone who knows. and i hope your not tuning it, considering you have to ask what is good a/f ratios.
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From: dont know, they wont let me out
Originally Posted by Jeff_Jeske
Agreed....you should have a fairly fat tune for daily driving. I use my road race map for daily driving because I beat the crap out of my car every time I'm behind the wheel.
11:1
11:1
Amen to that, I swear they dont run right unless you beat it.
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From: dont know, they wont let me out
Originally Posted by EvoRecordSetter
these guys are confusing as crap.
if u follow half the advice here ur car might blow lol.careful man...ask someone who knows. and i hope your not tuning it, considering you have to ask what is good a/f ratios.
if u follow half the advice here ur car might blow lol.careful man...ask someone who knows. and i hope your not tuning it, considering you have to ask what is good a/f ratios.
Y not no one else is going too
thats why I ask ????
and take small steps
this should be the best source of info, people that have been here already.
Last edited by NEMES!S; Jun 2, 2006 at 07:26 PM.