EMS Starting And Tuning Help Please

[jspecmike]

Intro
I orignally had purchase the AEM FIC8 from IPS because I thought it was a damn good device for the price. Well short story it turned out to be a pain in the ass. So I decided to bite the bullet and buy the EMS. Only owned it for a week now and I am in love. I purchased the IAT and 3.5 bar map sensor and installed through a wiki link, I was able to get the car started from this cal file

Byron's 3000GT VR4 AEM tuning, maps and info
(accidently used the stock vr4 cal)

But to my suprise it started over fast and was pouring and did not hunt at idle or anything. I turned the car off after 2 minutes. I than tried to restart it no go, its been almost a week since than and still have had no luck getting the car started. It comes very close to starting but no cigar. Since than I have made my own cal file

92 TT Mods:
15g Turbos
560cc injectors
255 Walbro hotwired
3sx cam gears +1 intake, -3 exhaust
FMIC
Koyo radiator w/slim fans
SS exhaust

I would like someone to please take a look at my cal file and make sure i have everything configured correctly and I did not miss anything. I can e-mail the file, and later I will make a link to where you can download it.

[i3igpete]

put it into a zip file, and upload it in your post. will be easier that way to keep track of old vs. new cal files.

can you describe how it "almost" starts? Does it just crank endlessly or can you get it to sputter a little bit? or does it start and then die immediately?

[jspecmike]

put it into a zip file, and upload it in your post. will be easier that way to keep track of old vs. new cal files.

can you describe how it "almost" starts? Does it just crank endlessly or can you get it to sputter a little bit? or does it start and then die immediately?

Oh yea duhhh lol. It normally cranks endlessly for a while and than everyonce in a while you get a little bit of sputter. I havent had it yet where it starts and then dies. BTW thanks for getting me on here this site seems much better lol.

[i3igpete]

is this your original cal, or did you do the changes i suggested on 3si already?

set your crank injector time table to 35 RAW all the way across.

in engine start -> advanced start -> advanced engine start:

set fuel pump prime to 4 seconds. this will prime the fuel rails to give you pressure BEFORE you start cranking. the way it is right now, the pumps don't turn on until you start cranking. that might cause the injectors to dribble fuel into the cylinder and as a result flood the engine, so it won't fire when teh rails finally do get up to pressure.

crank initial pulse, just make it a straight line from (-40, 40000) to (120,0).

start extra vs temp, make it a straight line from (-40, 40) to (120, 0)


beyond that, your fuel tables are ALL jacked up. You are running boost comp (fuel is automatically multiplied by the map sensor reading) so you shouldn't have that much slope in the fuel curve. we'll tackle that next after you get it started and synced.

[jspecmike]

is this your original cal, or did you do the changes i suggested on 3si already?

set your crank injector time table to 35 RAW all the way across.

in engine start -> advanced start -> advanced engine start:

set fuel pump prime to 4 seconds. this will prime the fuel rails to give you pressure BEFORE you start cranking. the way it is right now, the pumps don't turn on until you start cranking. that might cause the injectors to dribble fuel into the cylinder and as a result flood the engine, so it won't fire when teh rails finally do get up to pressure.

crank initial pulse, just make it a straight line from (-40, 40000) to (120,0).

start extra vs temp, make it a straight line from (-40, 40) to (120, 0)


beyond that, your fuel tables are ALL jacked up. You are running boost comp (fuel is automatically multiplied by the map sensor reading) so you shouldn't have that much slope in the fuel curve. we'll tackle that next after you get it started and synced.

Alrighty just made the corrections you just told me about, making a straight line seems to be a pain in the ass on here btw. Hmmm, Im suprised my fuel tables are that fucked when it caculates old injector size to new injector size.

P.S I reuploaded latest file with corrections mentioned.

[i3igpete]

when you go to edit a value, you should be able to choose in the dropdown whether you want a graph or table. pick table. Then type in one number, type in the other. then select stuff in between using the shift/control button (same functionality as in excel), then right click and pick "calculate". it will linearly interpolate between the two points. This also works in the fuel table as well, you can select a box and have stuff filled in the middle.

OK never mind about the fuel table, it looks like you're NOT using boost comp. boost comp "flattens" out the fuel table to make it easier to see fluctuations in AFR... you're basically mapping out the engine's volumetric efficiency when using boost comp. read this once you get the car started:

http://www.supraforums.com/forum/sho...-dyno-*tuning*

[i3igpete]

I haven't looked at your idle tables yet, let me know once you get it to fire up and we'll look at that next.

[jspecmike]

I haven't looked at your idle tables yet, let me know once you get it to fire up and we'll look at that next.

Alrighty I will try this calibration file later today.

[TurboSinceBirth]

Boost comp makes tuning quite a bit easier. I had planned on setting mine up that way when I bought an AEM EMS but I realized I barely had time to finish my car let alone learn to tune a standalone so I'll definitely be listening in especially when it comes time for me to go down that route again.

[jspecmike]

Well last night I had luck getting her started. But not with the cal you helped me with Pete, I did try that one first and had no luck at all. I said wth let me try th one that got the car started. Bam it fired over with some persuassion. After letting it run for a bit I shut her sown and ever since than she know fires up right away lol.