So I've have trouble with the accell settings in the past, and now, looking at the data loga I can see I haven't gotten them right yet. It it very driveble and the hesitation is minimal the the throttle responce isn't anywhere near what a stock FC is :-/ I just drove one the other day...

So anyway, here are screenshots of my datalog and acell settings, just wondering if any of you guys have an idea, I have no TPS by the way.
Let me know if you need me to post shots of anything else.


You can see on the datalong where is it kicking on at random when I've been at WOT for a while, its making tuning very diffucult.
Thanks in advance for your help
-Philip

 

Oh, I don't know if my setup even matters but here it goes:
1/3 BP 6port motor
s5 N/A rotors
680 primary injectors (gsl-se)
1680 secondaries
walbro 255lph fuel pump
t2 intake manifolds
large turbo
rinning at min. boost right now.

 

Do ya'll have accel off under boost? If there any reason not to do this?

 

in your case, i think TPSacc is the acceleration enrichment, even though its based off of map_dot instead of tps_dot. I've never really looked at TPSacc on my setup (actually tps-based) since although it works correctly, the log of it will randomly spike to very high values (which is not reflected in the tps or pw logs)

Why are your duty-cycles different for the primary and secondary injectors? When both are staged, they should be the same (although in megatune the secondary DC for some reason always has values in the millions on my logs)

 

I kind of did the math on that section of the datalong, and it seems like for .8 sec period of log where the acel enrichment was ON, the map only incresed at a rate of 6kpa/sec. The threashhold is 50 kpa/sec, so why is it kicking on? that is why I'm confused.

 

I honestly don't understand that part, but I'll look into megatune for what your talking about.

And about the duty cycles, I have 2 differnat fuel tabels and 2 differant sized injectors.... I don't know how they would be the same.
Table 2 controlls the secondaries... maybe you only have one fuel table?

 

is this the setting you're talking about?

 

What i'm saying is that i think the variable "TPSacc" refers to acceleration enrichments, regardless of whether they're actually based on TPS or MAP (mapdot... change in manifold air pressure/change in time). It's just an old variable name from before the code supported accelerations based on the rate of pressure rise. You can change what the accel enrichments are based off of in either the screen you just posted or the second one in your first post, but that doesnt change the variable name (and changing one will affect both screens).

About the duty cycles, I do only use one table and staged injection to control the secondary injectors, therefore when they turn on, the MS automatically makes the duty cycle and pulsewidth the same for both primaries and secondaries. There can be the occasional rough spot when staging if the throttles for the secondary runners arent open, but for the most part it works well.

 

I've never had good luck with MAPdot on the rotary.

If it's triggering you might be hitting a case where MAPdot is over 50 for a VERY short duration, too short for it to show up in the datalog.

If that's the case you can set the threshold higher, but that won't help your response.

I've only ever been able to get good response on the rotary with TPSdot though.

Ken

 

The vacuum signal from a bridge is very dirty. It's quite likely triggering your acell. Any slight misfire (as is common on a bridgeport) will trigger it.

 

ah yes, yall's last 2 replies make lots of sence, because I am still tuneing it and it is not exatctly running smoothly as you might could imagine (thank rotory god for RA apex seals ).

I did turn the acell off in bost, is there any reason I should not do this?
Thanks,
Philip