Attak Turbo swap?

[kviper]

I have an 06 Attak with a CPR stage 2 Turbo that i switched to a stage 1 2854. It was run at 20# boost on 116 race fuel (in tank now). After switching the Turbo i started it up and the AFR was reading in the 18 to 19 to one range at idle and looked as though it was coming back in to the 13 to one range after flipping the throttle a bit on the stand but would go back to 18-19 at idle. It would stumble a bit when i would bump the throttle, Is the idle to lean or could it just be that the fuel is getting old? I am going to siphon out all of the old fuel and put in fresh premium before i run it. It has an Attitude Industries fuel controller on it, Does any one have any setting's for this set up at 8 # boost? Thought's please, Thanks

 

[aja636]

here is the link t the page with all the numbers we used, Jeff simons and everyone else said should work.


http://www.ty4stroke.com/viewtopic.php? ... highlight=

 

[kviper]

Thanks aj, I may need to try to get these number's from Jeff before i run it. I would think he would be real close for this set up at 8 lbs as he has a lot of these at this boost running.

 

[KnappAttack]

I had to bump up the O2 in the factory guage to give it bit more fuel at idle on mine. I went to a +5.

 

[kviper]

I siphoned out the race fuel and put fresh 93 in and warmed it up good. Now i have about 14/15 to one at idle after it is warmed up good, drops to 12/13 at steady 1/4 throttle or so and dips in to the 10's when stabbing it hard for a split second. This sound's good for now unless it leans out in the colder weather. What do you guy's think?

 

[aja636]

the gauge just might not be catching up with the quick stabs, at least you got a good Idle going now. I would wait till you get it on the snow and get a load on the motor to see what is real. The temp shouldn't matter that much, the EFI should correct for that 12-1 @ 0 degrees is 12-1@50 degrees.

I also bumped the CO number up in the sled, I think I was +2 or +3.

I ran the air/fuel at 12/13 to 1 all the way through the RPM range with that turbo. Kept it safe and had tons of power.
Just my two cents

aj

 

[kviper]

If it holds these numbers when it get's cold and under load i will be happy,Just may have to change boost setting.