I'm running 550cc/min primaries and 1680cc/min secondaries with my E6k, and I can't for the life of me get it to bring in the secondaries smoothly. It seems that there is no way to get it to do this properly, as there is no way to tell the computer what sizes your injectors are, so my guess is that it assumes equally sized primaries / secondaries. Thus, my transition is either richer'n hell, or leaner'n hell... dammit!

Anybody encounter / fix this problem before?
Thanks!,
Manolis

 

my fix is two part. one I don't run those giant 1600cc injectors and two I don't stage the injectors. runs great never had any hesitation or stumbles.

 

It doesn't need to know the size of the injectors, that's your job There should be a staging line on your fuel maps at which point the secondaries come online. It is at this point at which you need to adjust it for smoothness. You may have to adjust a couple of bars in each direction and you can even move the staging bar to a later point so the extra fuel won't cause a stumble.

Eric

 

As far as I understand the problem, I'm guessing the cause to be.....

Larger injectors take longer to open and close. If injection time for small injectors is below 2ms, during the entire "open" time the injectors are never completely open. This leads to difficulty tuning because small changes in injector open time start controlling the amount of partial opening, making large changes in the actual fuel delivered. Like I said earlier, Larger injectors usually take longer to open and close, I'm guessing that anything lower than 2.5-3 ms Open time, and your running into the same situation when your secondaries kick in. Like Cosmo Donk said, try changing the location of the staging bar.

 

And raising the base fuel pressure helps. Try 40psi and up. This REALLY helped my 720cc and 1600cc combo- along w/ bringing the staging bar down.

 

i had the same problem in a car i put an e6k in a few month back and could not figure it out. i tried all the suguested things (excepts not staging them) and found none of these helped. through talking to some people, i found my problem was actualy in the ignition maps... runs seamlessly now with the 550/1680 combo.

 

I honestly believe there's only one way to fix it...
And tims was the one who stated it.

Don't run staged injection!!! there's no need to do it.
your not gaining anything from it just making things more complicated then they need to be. i've always believed in K.I.S.S (keep it simple stupid)

 

Does no one car about idle, or is it just me.... Most run staged because that is what the factory ecu does. The factory ecu does this because 1100cc/min per rotor is just tons of dino juice. Throwing in 720cc or 850cc doesn't make it any easier. I can't imagine that it's very easy to get a smooth idle running without staging the injectors.

 

I don't know what the fuel requirements are for your engine(so 1600cc maybe needed), on my non staged (4) 720cc stock injectors I had no problem with idle/cold start/hot start/etc. the engine would fire immediately hot or cold and idle ok. my setup was a racing application so as long as it idled I didn't really care, so I did not spend much time with this. but I didn't want any type of hesitation or stumbles in any rpm range, and this is what I concentrated on. engine ran great and never had any hesitation or stumble.

 

hey fatboy,

it has alot to do with your tuning/ECU/ Injectors.

Im running 4 - bosch 1600cc injectors non staged on my rotary with an Autronic ecu. the bosch motorsport injectors are very fast and have very good spray pattern. Plus the Autronic has one of the best injector control out there. I got to admit i didn't believe it was possible either, but it is....

You should have any problems running big injectors non staged. "Try it, you'll like it"

 

Interesting....... I'll give it a shot.

 

I am running 850 primarys and fore secondarys , two 1300's and two more 850's connected in parallel (so essentially I have 2150cc secondarys).
I run it all staged without any problem when the transition comes , you just need to spend some time "playing" with your maps , maybe you"re just bringin them in too early , try just almost maxing out your primarys before bringing them in.

 

you guys should put a microtech and stop fighting about the stagging deal,and the haltech.

 

_________>>>>>download one of the base maps already staged setup
for 550x1680's

I did and did not have any staging issues

Try this Map-(TII)
this the one I used as a BaseMap with my previos E6K

http://www.teamfc3s.org/forum/attach...?s=&postid=382

 

And what, praytell, is your idle RPM?&nbsp I can't see those things idling UNDER 1,500RPM?

There's a reason we try to run staged - most people like a sedated (read:&nbsp stock) idle speed.

I've had no problems getting a 550/1600 set-up running with an E11 on a 13BT running on a '90 FC3S turbo.


-Ted

 

I had this staging problem for months and I just fixed it yesterday. I moved my staging bar from 12 to 8 and run 2.3 ms @ 8
2.5 ms @ 9
2.7 ms @10
2.9 ms @11
I have 550/1600 40+psi fuel pressure.

 

really.... staging the secondaries before boost, interesting.

 

I usually do that, especially when using really large secondaries like the 550/1600 combination.&nbsp If you can stage them well, you can't fell the transition - why stress the primaries unnecessarily if you've got the capacity in the secondaries?

-Ted