Hey, I dont post here a whole lot because I do alot of searching and reading and I can usually find my answers. This time I cant. I have been looking and reading for at least 3 weeks so dont tell me to search please.
I recently jump head first into Speed Density. I am now way over my head. I would not consider myself a tuner at all but I have managed to do everything myself to this point. So please give me the "tuning for dummies" version.

#1: Everyone talks about changing and tuning "SD Map Sensor VE and Calibration" and "SD RPM VE" that great and all but what exactly do they change. Regardless of what I do to either of them I am really not seeing any changes. My car is not drivable because the AFRs are all over the place from one extreme to the other.

#2: What else do I need to adjust to get everything setup. And how/where does it affect the tune

-Links to good info is good but I have read most of whats out there already.

-Anyone with a similar setup that I could see all your tuned tables would be a huge help. I am good at reverse engineering if I have something to work with.

My Setup: 06 IX MR USDM 88590015 tephra v7 (With o2 patches and others)
Ported Exhuast Mani
Ported stock turbo
AMS style licp
"3 intercooler (core & in/out)
Fujita uicp
vta bov
GM iat sensor hard wired to maf wires (temp scaling seems to read correct)
OMNI 4 bar (Offset is correct, reads 0 with engine not running)
No intake or maf

Thank you in advance for any help. This is my daily and I really really need to get it going again.

 

if you have $, you would be better off paying someone like me to get your car running smooth, then you can learn off my roms what i change and how the car responds to what i do.

just throwing that out there. thats one of the major benefits of being tuned by someone like me.. you are actually involved in the tuning and not blind during the events taking place.

speed density is quite interesting to tune. you have to think outside the box when tuning it.

when you do so, you get drive ability like this:


I would be willing to work out a deal with you where i will only charge you to get the car running "smooth" and not power tuning.. which will deduct $ from the process. however if I'm not doing the power tuning you would have to do it on your own.

 

Ya I would love to be able to do something like that where I will learn it as you do it but I dont have any extra money at all right now. lost my job a year ago and I am still struggling to find something that can pay California type bills. living out of savings right now.
Thanks anyways. May hit you up for more details in the future though.

 

Then I would have to recommend swapping back to the maf and your previous tune until you can go that route. There's plenty of info out there on SD, there's at least two 40+ page threads that detail everything. It helps to read them again and again sometimes, however it is still not cut and dry.

 

ya I have been reading over and over again. I know of all these threads. I also already know what my options are of swapping back or going ahead. I would like to go forward with it, that is why I am looking for tuning answers and not just asking what random people think I should do. I'm sorry for any hostility but that's why I don't post on here very often. It seems that 1 out of 100 people will answer a question asked and the other 99 just what to give an opinions on doing something else. Again, no disrespect I just want to cut it off before more people chime in with similar responses.

 

First of all what version of sd? I suggest starting on 3d sd because it simplifies adding or subtracting fuel from each log point. It's rpm vs map . Adding ve adds fuel. I can help you start out on a 3d sd set up but it is not a quick process to tune yourself . The ve map is large and requires a bit of driving to fully encompass.

If you can grasp what you don't know in less than 4 tanks if gas then Tom would be wasting your time. But I'd be willing to bet... That Tom would get you on track in a half tank.

I've never had him do work for me but his reputation and kindness precedes him.

 

I Hope you are studying the how to tune speed density by scheides...that's how i got a big start

 

Yes that covers a lot . Also to the op remember big changes make big results. If you're not seeing a change in something , do something drastic and divide the result. ie 6 full ve numbers is roughly one full afr number in my tuning

 

No I dont have the 3D version, I just have the basic one from here:
https://www.evolutionm.net/forums/ec...y-patches.html

I have seen the 3D version in my search and reading but thought that it being so much more detailed it would actually be harder for me to tune as a start. So I thought I would wait till I had a better understanding of how this stuff effected one another before going that route.

I absolutely understand what you are saying about spending the money in gas figuring it out instead of paying him but I am not looking to get on the track. I am just trying to get the thing drivable and understand how I'm doing it. I would love to pay him but I physically cant. It would be; pay him and lose my house or car or figure it out and tune it myself. that's my only option.
I am a bit familiar with both "tscompusa" and you "211ratsbud" just from reading on here. You guys both know worlds more than me about the correct way to do things and Im sorry I cant pay you guys, and free advise anyone can give with divulging their secrets is very much appreciated

 

Tsc is worlds more knowledgable as I was just like you about a year and a half ago. There's more secrets to the 2d stuff because you really need to get dirty with the maf scaling . 3d you can just ve the problem areas out.

3d is tedious but you can get open loop cruise idle and light throttle fuel dialed in easily in a couple hundred of miles.

Matching your existing timing map maf loads is where the sd map is coming into play

 

What injectors?

 

stock injectors

 

heres an example of a sd 2.0 set I run. my 3d ve map is a bit smaller than your normal map but i run something a little different anyways.

You will have an easier time on stock injectors. Which is actually kind of nice because you know exactly what latency and scaling to go with. Infact SD 2d might not be so bad, but Ive never really tried it. TSC may be able to chime in there.

I am still learnig a lot about tuning in general because I havent really been doing this that long. I tried maf for a litle while and dove into SD. I havent scaled my injectors properly because my SAS system leaks at idle. Once I fix that Ill be continuing to get my closed loop idle in check

 

great, I will try and get 3d setup tonight so I know a little better what I am looking at above.

 

Ps. Check all the scaling in the tables to see if they are 4 bar not 3 bar