MadDog

So I've had my GReddy kit on for about a month now. Everything is running just fine with my emanage blue. Now that I feel confident everything is going smoothly its time to tune!! :p

There are two ways to tune the fuel maps, through the additional injection map (adds to the duty cycle of the primary 1, and secondary injectors) or the sub injector map (controls the primary 2 injectors entirely)

Any thoughts on tuning strategy, i.e. when to tweak the additional injection map versus the sub injector map?

adrian-1

I have no experience in tuning but I can show you how my shop adjusted the emanage map.
They pulled alot of fuel out of both maps. This post has the side by side comparison of the cells and the emanage map.

MadDog

Adrian, what AFR was your shop tuning for? Also, can you post a better quality picture? Maybe black and white at better resolution would work.

I have a thought about which map to use. The idea is a little complex, so bear with me.

I went on an extended highway trip last weekend and noticed something interesting. Its really easy to get to full boost in a hurry when you are in a high gear, going uphill, and just slightly press the accelerator to avoid loosing speed. I noticed in these instances that the AFR was leaner than usuall. ("Usuall" is cruising around town in a lower gear) So, I believe that the stock ECU has different fuel maps for different gears. That makes reasonable sense. Cruising in 6th gear is done somewhere around 4kRPM. The open-loop injector duty cycle might be less for 6th gear cruising at 4kRPM than for 1st gear, where you are likely to be accelerating at 4kRPM. Hence, open-loop injector duty cycle would be longer for lower gears.

The additional injection map (AI map) is adding a percentage of the duty cycle to the injector pulse. If my hypothesis about different duty cycles in different gears is correct, the AI map is adding more fuel in lower gears than in higher gears. The subinjector (SI map) is completely controlling the duty cycle of the P2 injectors. So, fuel added by the SI map is a constant, regardless of the pulse from the stock ECU.

The result is that when the stock ECU injector pulse is long (low gear) then the AI map has a greater effect than the SI map. The reverse is true in high gear. The SI map will have a greater effect because the stock injector pulse is short a percentage of a short pulse. (a percentage of a short pulse + a short pulse = still a short pulse)

The bottom line is that I believe you would do better to change the SI map when you are tuning for high-gear boost, and tuning the AI map for low gear boost.

Moostafa29

I'm pretty sure that is correct. I seem to remember one of our resident guru's saying that in the past.

adrian-1

They tuned for 11.8-12.0 AFR. It was super rich before and l was losing power above 6kRPMs.

The picture is the best I could do at 100kB size. I've uploaded a clearer image here.

This was back in July and I was on the M-flash. After a month, I noticed it wasn't running as good. Then I had the heat recall done and the dealership updated me to the R-flash. That really messed up my AFR's. I'm rich again, around 10.5 AFR. I'm ditching the emanage and getting the Interceptor X.

Moostafa29

Wouldn't it be nice if we finally got them. Hopefully they will ship out the in a few days, or by the very beginning of this coming week.

MadDog

-update


I've been tuning over the past week or so. I log the AFRs in my e-01 - then tweak the maps. I am having good success by addressing the higher gears with the sub-injector map and the lower gears with the additional injection map. The one exception is around 4000 RPM. If you look at the stock map, you'll see the sub injection map drop off the table there. Why? I have no idea. But, this caused AFRs in the range of 16-17 under boost which did not make me very happy! So, I added a lot of fuel (basically carried the value to the right, from the adjacent cell). This seems to have fixed the problem.

AFRs are now in the 11:11.5 range. Very flat. Very consistent. Additional power is awsome!

adrian-1

What flash are you on?

I've given up tuning after the R flash jacked it up. I have just the oppositte happening at 4k, mine's super rich. Mine goes to 9.5-10.5 in the 4k range but sometimes it's higher depending on the gear.

Any chance you can email me your emanage map? adrian-1@***-internet.com

MadDog

I'm still on M flash. I decided to stay there when I heard they developed the kit on M. I did call GReddy and have them send me the latest map (this was about 3-4 months ago) I wonder if they updated the map to compensate for the more recent factory flashes.

When did you get your map? I'll send botht the stocker and mine tomorrow. I am battling a fever and trying not to hurl on the keyboard right now.... Maybe all you need is the more recent map. Makes sense that they would update it as the flashes come out.

Gerael

i don't have turbo... but damn tuning sounds so fun... haha.. how do you guys load up the maps into the emanage? laptop?


what kinda mileage are you guys getting?

Speedrx8er

Maddog, sweet.. could you post your map??

MadDog

As promised.... Here are the maps. Just change .txt to .gsc

WARNING: Do not install my map on your car! You may damage your car as my map is tuned for MY car and not your car!

Sorry, I had to do that ^. I don't want anyone saying I blew their car up.

Anyhow, I would suggest that you use the changes I made as a guide for tuning your own car. Basically, you'll see that I added fuel in the low boost range (I was lean when first coming into boost) to both the additional injection and sub injector maps. I also added a lot to the sub injector map around 4k RPM. This fixed my lean condition at highway speeds in high gear. In general, I removed fuel from the additional injection map. Its REALLY rich at high boost and high RPM. I haven't touched much of either map above 29kPa. I will eventually remove fuel from those regions, as it is still in the 9.5-10.0 range. I am trying to move very slowly, though. So I don't screw things up. I have a rule that I won't change any cell by more than 5% at a time just to avoid any surprises.

Also, note that I am still on the M flash. It sounds like there are significant differences in later flashes.

Tune on, my FI brothas!