TurboBerserker

iTrader: (1)

I've been getting mixed messages on this. I've been told 12.5 should be the AFR target if you tune for a turbo on the street and that 11.5 is the dyno target because it will be leaner on the street...

I'm running a megasquirt and can set an AFR target for WOT. I know Parish is shooting for 11.5 in this table, but have been told that's too rich. I've also read where 11.5 is considered a safe tune.

Any clear this up for me? (In the mean time, I'm runnning 11.5

moehorsepower

iTrader: (3)

Yes you do tune a little to the rich side on the dyno, (also depends what kind of Dyno) but if you are running 11.5 now on the street that is a good safe A/F, But if you are not running a lot of boost you could go up to around 11.8, but there are other factors involved such as timing,RPM. More Boost,less timing, Richer A/F. Less Boost= opposite. Makes sence ?

JZ 97 SS 1500

iTrader: (2)

Erik, for the street and daily driving, we run all our cars at 11.5. Peace of mind is much cheaper then pieces of pistons....lol

hellbents10

iTrader: (10)

I go a little richer at torque peak the lean it out a bit twords the hp peak. My afr's on turbo cars are usually almost a soilid 11.5-11.8:1.

TurboBerserker

iTrader: (1)

Thanks guys -- and I agree with Jose!! Gas may be expensive but diamond pistons end up costing a little more lol

JoshuaGrooms83

iTrader: (2)

i know.... old thead but just want to make sure that this is still the desired AFR? 11.5 on the street?

t_raven

iTrader: (12)

Dang right old thread lol

denmah

iTrader: (2)

i run a 12.20 up to 8lbs and then i shoot for 11.20, over 15psi 10.8-11.20

just me personally

you could just slug it into the 11.0 range right away, and it will love you

i have seen nearly no hp response to cutting 11.8 to 12.5 in boost so as long as it isnt breaking up fat its ok hahah

JoshuaGrooms83

iTrader: (2)

nice, well at leasr i have this very small piece of the turbo pie figured out lol

Sarg

iTrader: (6)

As stated above I like right at 11:0 or a touch richer at peak torque and then let it go to 11.2-11.4 at peak hp. Just how I have always tuned turbo cars. If you see det try taking it a bit richer or reduce timing.