i finnaly figured it out. my load scales were way out on my evoscan, because im a retard and forgot to change my scaling in my map

 

I seem to have a similar issue....or at leas I think.

Pre-SD I hit about 300 load at 24ish psi with about 11.4a/f. Trying to tune in the SD now, and was under the impression I would be able to replicated my load values and therefore have the same tune(a/f and timing).

With the in-boost mapve slightly raised over kpa I only hit about 260 load with lean a/f. Raise the values on the right side up about 50points, and I hit 270 load but pegged rich a/f.

This is with 100% rpmve in those areas.

Do I need to just retune my entire map by shifting it the appropriate amount, or is there something I'm missing?

EDIT: I was right, it was scaling. The basemap I started from had map16 selected for the mapve table. DUH!

 

Just wanted to stop in here and thank everybody who helped to make this possible. I just set up speed density on my car tonight and all I can say is wow. The car drives amazing. I never imagined the car would perform so well, I should have done this a long time ago. I noticed it as soon as I backed the car out of my driveway in reverse, no jerky crap trying to modulate the throttle at low speed. Amazing. Thanks again guys.

 

My question is, what are the benefits of this mod?

Also, what are the risks?

And I'm guessing this will help you remove that nasty MAF sensor?

 

Speed Density? MAF can be removed, bov can be VTA, idle can be smoother, power can be made, oh...and you can tell people you are running "speed density", which just sounds awesome!

Also, it's just one little step after putting in a new MAP sensor to log boost, kind of like "why not, since I've come this far".

 

i just got an evo 8 and the guy before me had it running sd. my question is its running pretty rough and the afr's are all over the place. at idle its anywhere from 11-13 then cruising its from 14-16 and sometimes 17. what is the best way to go about fixing this problem. how are you tuning your fuel and timing maps and the SD RPM VE Table and SD MAP VE Table? plz help

 

can someone help me out

 

no one has any imput

 

Post up some logs and ROM< people might come along to help. Might be better in it's own thread.

 

please see page one...

you log, log some more and tweak the areas that need help...remember you can still modify your fuel map and timing map in problem areas.

You probably need to seek out a professional tuner.

 

I am having the same EXACT problem! Cruising is nice, AFRs are pretty good, (with the exception of the car running 18:1 AFR at particular load cells), but as soon as the car sees boost I'm pig rich and the car knocks. At this point, the AFRs are nowheres near what I have defined in my fuel tables. All consistency goes at that point. I should mention however that is at part throttle. If I wack it 100% it leans out a little bit in upper 10's

 

Are you running kpa:load 1:1? Is the rom set up for the map sensor that you are using?

 

+1 ^

 

The ROM is setup for my OMNI 4-bar, and I double-checked it twice now, so I'm sure that is right.

I am no longer 1:1. I was initially, but have made changes. Here is what my maps look like now.

 

I would personally ditch that kpa load table start one to one. That has load below kpa until a couple psi then favors a lot of load. Even with one to one you will see load higher than your kpa. It's very deceiving and I went 3dsd so I did t have to fudge my fuel map. Dropping back to 1:1 kpa load was the best thing ever I did.

What's your map kpa table?

Are you tuning from scratch or do you have a maf tune you're trying ? Pm me alllll of your set up I'll see if I can help kick start ya

Are you opposed to 3dsd?

Little bit more time consuming but it is 10x more intuitive IMHO