Any pros care to share a 3d ve map? I've only ever seen mine and Charlie tunah's.

Specifically the 3d view I'm curious of smoothness

 

should look like a smooth bubble.

 

[]https://www.evolutionm.net/forums/attachments/ecuflash/184654d1330488305-speed-density-2-0-3d-ve-tables-baro-vefm.jpg

https://www.evolutionm.net/forums/sh...38#post9142038

Good read

 

I thought the maximum value you can use in the VE table was about 105 looks like you have values up to ~128

 

That's my old one the new one which is just tuned for cams has something like 146 for the ve max. Same basic curve

 

You basically want to use the 2D SD like this. From 0-90kpa it should be a 1:1 kpa/load ratio. Use the VE table from 0-3000rpm to set your 'cruise' VE. Basically from there you can have the VE table ramp up to around 100% and taper as necessary towards redline after 6k.

The problem people have is the lean issue when kpa approaches 90-140kpa in the 0-3000rpm area. This is because your VE table is set for 'cruise', which is a lower VE. To compensate, you have 2 options; in the 90-140 kpa/load ratio table, you will have to raise the load values so it adds more fuel when you start pressing on the throttle. The 2nd option is to adjust the MAF table in the HZ range you see from 90-140kpa. The problem is that it will make the low RPM cruise tip-in really nice but you may have a rich dip above 3000rpm when you mash the gas since these adjustments affect every rpm range. People generally compensate with the fuel map in this area. Using the 3D tables allows all areas to be dialed in to their ideal situation. It takes time but I think its worth it. Renting a load bearing dyno that can hold the car at a specific speed or RPM is ideal. There is more to it but that's my 'rough' explanation of how I see it.

-Jamie

 

there is more then one way to skin a cat with tuning sd.. and ill leave it at that. 3d has no advantage over 2d if the person knows other tricks.

 

I agree.

-Jamie

 

Even if you run open loop 100% of the time?

 

Yes. O2 feedback is helpful for keeping things in-check but a solid base map should be adequate enough. Mind if I ask why you don't use a front O2?

-Jamie

 

Subscribed, because I'll be switching to SD ( with iat sensor ) not sure if that's 2d or 3d.

And like hearing your guys reasons and why.

 

It's up to you. 3d is more intuitive to use for the less experienced I believe. I didn't do any maf hz adjtments or funky fuel map tricks that may be necessary on a 2d. I haven't even adjusted my tip in enrichment tables. And I'm running s2 cams.

As others have said if you're familiar with most of the ecu tables before you switch then they will accomplish the same thing for all practicalities sake in the same result.

 

Switching back from an AEM V1. Previous owner cut out that circuit and wired the AEM wideband in the front.