So i ordered a tactrix cable to tune my evo due to the fact of it running a 10.0 afr at WOT. the problem is im not sure how to adjust it perfectly. i do know its in the high octane fuel map but thats about it. ive got a megan racing 3" tbe and a aem intake and just dont want to wash out my engine.

 

E85 or 91?

 

If your going pig rich all of a sudden you might have a boost leak.

 

I'll have to check first thing in the morning for leaks. Boost is reading pretty normal though. but it's on 91 I was gonna have it dyno tuned on e85 when I get the injectors the fuel pump a bigger turbo etc. but in reality the only tuner around me is 2 hours away and is pretty expensive. so I was just gonna use ecuflash

 

Was the car running good AFR before?

What are your Fuel trim readings through evo scan?

Is there any exhaust stream leaks you can hear?

Read and read and read as much as you can here on the ecuflash section.

Let us know

 

My tactic cable is being delivered today I'll send a screenshot of my map and no exaust leaks it seems to have been like this since I've bought the car about 3 months ago

 

Remember the turbo is a compressor and will boost 40 psi, In other words it is capable of still making target boost and have a leak.









Once you have performed a boost leak test your first step would be to monitor your fuel trims.

ltft
low
mid
high stays 0 always
and stft 02 sensor feedback this is current 02 sensor activity and should be cycling rich lean +- 5

 

ok I'm going to start a boost leak test tomorrow. I was watching my afr today and now it's running 11 to about 10.5 I turned my boost down to 17 pounds with my manual boost controller

 

11 is ok for 91

 

All of the info you'll need for this is in the intro to tuning threads. 4B11slayer is correct in directing you to do a boost leak check. From there the only table you're going to work with for the issue you described is the high octane fuel map. Log your car, specifically your wideband, load and rpm. And then begin to pull fuel out of the areas of the high octane fuel map that are relevant to your area of concern. To do that you increase the numerical value in your high octane fuel map. Do this in small increments until you have the desired results.

 

Any one know how to make high octane map have proper shape and ramps and smooth transition? Less variances in afr.
?

 

I understand now thank you so much I really appreciate it.

 

Use this https://www.evolutionm.net/forums/ec...t-version.html