RomRaider

Just wanted to say that I have used these tables successfully to fix a very rich cold start condition. After installing my SX AFPR, I experienced a situation where the fueling would hit 11:1 on a cold start. Once the STFTs kicked in and went to a negative value, the AFR would overshoot stoich, go lean, and the car would have a nasty stumble until it recovered. This never happened on a 70d cold start .... but once it dropped down into the 50d range, things started to change. I played with these tables such that this no longer happens. Starting the car up today in 31d weather still had great manners. Thanks!

t

Good to know they were useful. If you want to, how about sharing what specifically you tried and ended up with in experimenting with these tables?

Sure. I can provide more specific details if anybody wants it. If so, let me know and I will copy all of the warmup tables into a stock binary and post it. I honestly didn't think anybody would want specifics because it appears that most people have an opposite problem due to the TGV deletes. At first I tried using the JDM STI warm up enrichment tables but they didn't work well at all for me. So, I decided to attack it myself.

Here is what I did ...

I increased the decay step value
I decreased the decay step delay
Slightly lowered the min base enrichment 1
Slightly lowered the min base enrichment 1 idle.
Lowered all of the Level 3 tables similar to the S203 tables.
Did some overall smoothing.

t

Yes they DO work! I used these same tables on a couple of E85 tunes to cure cold start leaning.

10-4, works great.. takes a few tries to get it right, but no more hunting and weird AFR swings on warm-up

Any hopes on getting these tables on the 08/09 STi and WRX? I've been having a few E85 cold start issues that haven't been fully resolved by the coolant temp enrichment maps. Seems as if it needs the decays turned up so the extra fueling lasts until a higher coolant temp is achieved.

Yes, I'll likely add these in the next update for CAN models. I didn't before because there were some changes for the CAN models in warm-up enrichment logic and didn't have time to analyze/verify/update base defs as I wanted to get the CAN release out.

Thanks Bill, looking forward to it as always!

I've had a request to view my current Warm-Up Enrichment tables. A screenshot is attached. Please note that I am not finished with making changes. It is actually still a little bit rich on startup - just nowhere near where it use to be. Thus, when I get a chance, I will make further changes.

http://www.bescaredracing.com/sti/ecu/t ... Player.JPG

Tim

I realized recently that I made a mistake in defining the idle table for group 1 enrichment. The table does not come into play during idle, but non-"idle" mode and in open loop only. The other two group 1 tables on later models (looks like 07+ so far) are based on what is essentially cruise/non-cruise (map ratio) (irrespective of CL/OL). On earlier models, either one or the other is used, but I'll have to check to see if I can determine under what condition(s).

One of the focuses for the next ECU def update is determine the map switching behavior of as many of the multiple tables (any of the tables not just warm-up enrich) as I can and then label the tables appropriately, rather than A,B,C.

Were you ever able to get the warmup enrichment tables in for the 08/09's? My STi is having really funny oscillating idle at startup.

ev8siv3, did you adjust the primary open loop fueling compensation (coolant) table on yours? If so, how and did it help?

Thanks guys!

Yes I did the coolant table and the enrichment tables. I believe I also zero'd out some of the RPM dependant tables.

OK, so I just realized my ecu definitions were way out of date and the new ones include the warmup enrichment tables. Would you mind telling me how you adjusted them to improve the idle? I am really hoping this will help my hunting idle and problems. Thanks!

The changes were only to fix issues with cold start. I made some tweaks to warmup to keep AFR's aligned until around 140F.