Hey guys,

I have been doing some W/B idle tuning to my car and have gotten it to idle very well when it's warm...It likes to idle around 15:1 AFR. Amazing what a couple degrees of spark advance and pulling back some fuel do
However, now when I start the car cold, it has a hard time idling on it's own for the first 20 seconds or so. It fires right up but then starts sputtering. It didn't do this before I pulled some fuel out of the first MAF table. Obviously I need to add some more fuel back into it for cold open loop afterstart conditions...where is the best place to do this at? I don't want to change the MAF table because it idles so well when it's warm. I've looked over the program many times but just can't see it...would the "Open loop AFR % change Vs. Coolant temp" be the place?

Ps...it's a 165 ecm running a modified ARAP bin

Thanks for your help,
James

 

I had the same thing happen when I brought BLFs up to 128 when warm. I added more open loop % fuel and have been totally happy with it. I added quite a bit compared to the AUJM. Like at 60 (or so, whatever the breakpoint was), I think I'm at 18% enrichment (maybe a little more). $6E doesn't seem to have Afterstart Enrichment to my knowledge, but it really seems to need it. Afterstart would be something like 20% extra enrichment just after starting, and then decaying out over 30 seconds or so to whatever the open loop %enrichment is. If that's in there, someone needs to tell the world, and put the .ECU file out there.

 

YES, the $6E does have the startup enrichment fuel adders. I have 3 tables in TC's latest tdf cal. One is the delay table as a function of coolant temp, another is decay amount vs coolant temp., and the most important is the startup F/A ratio %change vs coolant.

If you use TunerCat, just ask them for the updates. They will get them to you in a day or less.

PS there is also a constant called startup enrichment decay rate; this is in terms of #injects.

HTH

 

COOL!
Can I get that without actually having Tuner Cat? I have Tuner Pro RT and the Autoprom, is there anywhere I can go for that? Or, do you know the location in the .BIN?
Thanks!
Jeremy

 

Bua Hac I believe. It had them when I looked. Just have to add the item in your ecu file with TP. Or beg an ecu that has it.
8d has the super 8d ecu now so it has about anything that is normally changed.
Sounds like a few of the 165 guys need to get togethor.

 

Mike T..thanks for the info....I figured there had to be a way to adjust it...only wish I had TunerCat now

I am using the same .ecu file that comes with TunerPro and it appears it's not in there. Anyone out there have a better .ecu file that has these tables that can be shared?

 

Well TunerCat was well worth the $$ for me. I have never added any tables or parameters to the tdf files by myself. If I need something, I just ask them for it and I get results. Great service, and I am sure many others will say the same thing.

I don't know anything about TunerPro, except that is freeware. Maybe contact the creators of the program, and they can help you.