Batch Fire Fuel Map
 

Does anyone have any fuel maps where they set it up in batch fire mode as opposed to Staged mode with 160 lb injectors? I know keith (rxrotary2_7) claimed he successfully wrote a fuel map for batch fire mode for a friend (because of the staging problems he was having) but I can't seem to get a hold of Keith so I can review his map. Keith, if you are there please respond, if not, does anyone else have anything I could look at.

I tried running batch fire mode and the car idled and drove, but when it went into boost it became very lean. I don't fully understand this since I used the same map (during boost) that currently works very well in my staged injection fuel map. Any insight would be appreciated.

Josh

Uh, different turbos???

A pair of 1600's would only support about...300hp at the wheels or so?
That's not that much power...



-Ted

Let me clarify. The setup I am running has 72 lb primaries and 160 lb secondaries. My understanding is that under boost conditions (after staging bar) the staged injection and batch fire injection fuel map should be identical.

I dont understand what you meant by "different turbos" . When I changed my injection mode to batch fire I didn't swap out my turbo too. Everything else on the car is exactly the same. I am just experimenting with different injection settings to elminate the stumble at the staging bar.

Hmmm, weird way of saying it...
Yes, after the staging bar, both primary and secondary fuel injectors will fire at the same pulsewidth "right" of the staging bar.

Um, is this an E6K or E6X?
If you change the fuel injection "type" to "batch", don't you lose the staging capabilities?


-Ted

You high bars in Vac IE bars 9, 10 and 11 were probably pretty rich, therefore, as you crossed into boost before, there was still extra fuel...

ALSO.. when most 1600's kick on.. they "Blurb" fuel until they stabilize... WHich is why its really hard to get a perfectly smooth thansition at the staging point..

also... the fuel comsumption under pressure is dramatic as comparet to vac, you fuel slope you kinda look like an uphill ski slope with the ramp being after 0 PSI

i might be mistaken but i thought when the haltech is set for staged fire mode it operates sequentially. each injector is timed relative to crank location wheras in batch fire mode the injectors are simultaneously fired relative to crank rotation.

with this being the case you have your injectors timed and tuned for the front rotor. i have a feeling that your rear rotor is running extremely lean and the front rotor is running on the correct tuning. with your wideband in a collected location i have a feeling that it's going to indicate a lean condition.

i'm not terribly familiar with the haltech systems any more but i would look for an injector timing function and see if you can manipulate the timing on the rear rotor injectors. try to think of the rear injectors as being out of phase with the rear rotor. the idea is to get them to fire when the combustion chamber is being opened as opposed to being closed if not entirely closed already.

again, i'm not terribly familiar with the haltech system anymore so i'm not sure if you can manipulate injector timing in batch fire mode even moreso on a front/rear basis.

Ray