Hi guys,


What do you recommend i should change the settings of the 2STEP (Fuel Cut, Ignition Cut, Retared Rev) on an EVO with full slicks with around 600whp (AMS 2.3 + GT35R). I really appriciate any help from you


Thank you,
Hassan

 

I would set the fuel cut high, 10000 RPM so it isnt used for the 2 step. I would then set your ignition cut at ~5500 and your retarded rev at ~5300.

I would then recommend to fine tune the setup at the track: if you bog raise the ignition cut at retarded rev, if you spin out of the hole lower it a little.

 

what slicks are u running?

 

what happens when i increase the ignition cut?
and what will happen when i increase the retarded rev?
what is the realationship between the two? will i build more or less boost when the values are closer or further apart?

 

my ignition is at 5500 and retard at 4700... and leaves @ 1.5 bar, good times !!

 

Hoosier R3-704 Slicks

 

what about the fuel cut?

 

what are the disadvantages on the turbo and engine when using Ignition Cut with the 2step compared to Fuel Cut?

 

I personally don't like fuel cut because it causes a lean condition in the motor. An ignition cut with a retard causes the excess fuel to burn very late, so late that it actually burns in the manifold/turbo/exhaust this spins the turbo and builds boost the fire ball out the tail pipe is just for the F&F effect. The disadvantange of this is that is wears out the turbo alittle quicker.

 

Ball bearing turbos can take this abuse better also, which you do have according to your post. you should be good there. The only way for you to really know is to try it out, whether it be in your driveway (), or at the track.

 

i will have 2 wait till the next T&T and try different settings like you said. anyway thanks for all the help guys i really appriciate it.

so should the retard rev be lower then both the fuel and ignition cut?

 

yes start the retard about 200 rpms below your ignition cut an move it down from there till you find a good spot that lauches without bog. Also play with the ignition cut RPM most people are around 5K to 6k. leave the fuel above the ignition cut

 

Fuel cut does not create a "lean" condition in the motor. Fuel cut completely cuts fuel. You need to have some fuel to burn in order to qualify for a "lean" condition.

To me ignition cuts feels too harsh, builds too much boost, and fouls too many plugs. Fuel cut gets the job done more cleanly, just doesn't sound as cool. Also, by placing fuel or ignition cut above retard rev by more than the overshoot of the limiter, you effectively disable those parameters anyway.

The retard rev is the rpm at which the ECU will engage the limiter level you chose in the wizard. I prefer to use fuel cut only at my target 2 step RPM, and then set the retard rev somewhat above that RPM. With fuel cut only, rpm will overshoot more than on an ignition cut, and hit the retard rev rpm (if it's within a couple hundred rpm of fuel cut). By moving retard rev further up, you reduce 2 step boost, by moving it closer, you increase 2 step boost. This is best combination of settings I have been able to find. No fouled plugs, control over boost levels on the stutter, etc. YMMV.

 

Like above. Fuel cut does not create a lean condition. I would use Level 10 Ignition Cut. Set the RPM and retard rev to your liking. I would start with 6000RPM and Retard Rev at 5900RPM. Also. If you want to WOT shift set the Retard in Main Rev Limit 100RPM less than your Main Rev Limit