obx tsi
15+ Year Contributor
- 197
- 2
- Dec 1, 2005
-
Manteo,
North_Carolina
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If combinedFT is 0% when cruising, then you will see the AFRatioEST read 14.7. If the ecu is adding fuel via fuel trims, then the afratioest will be lower than 14.7.6. During cruise your AFRatioEst is not matching the table in that region (demanding 14.7 but AFRatioEst is showing ~12s) but we would need someone who is more experienced to explain to us on why that would be as I am not sure.
If combinedFT is 0% when cruising, then you will see the AFRatioEST read 14.7. If the ecu is adding fuel via fuel trims, then the afratioest will be lower than 14.7.
I didn’t take a look at the log I’m on my phone but it sounds like you need to add fuel via global and then adjust your sd table in response.
1, 2, 4, and 6 will be affected with the same adjustment. Move Global Fuel less negative, thereby adding fuel. Keep adding fuel until your WOT AFR is near the demanded 10.0-10.3 and see where the fuel trims end up after that.1. I was wondering which way I should adjust to make changes. Sometimes I feel I'm running in circles.
2. Didn't notice that. Will look into it.
3. 16g 93 pump
4. Will adjust that.
5. Idle switch is there but had to change tps recently and I'm only simulating from tps.
6. Wonder if that has to do with short pulsewidth adjustment? I have had to adjust that number and unsure what it should be.
Thanks.
Thanks for the advice. Look forward to any other advice after you look at log.
For what it is worth, on my 2g the IdleSw does go to 1 at 0% throttle even while in motion. So that might still be the culprit. Also, DFCO is pretty inconsequential compared to the other fueling adjustments that need to be made here. I would start with getting the cruise and WOT stuff sorted first.Anyone know why decel stays rich?
I thought timing was low. Will work on it. Thanks.I don't know how far into setting up your tune you are but that timing for your setup (very close to mine) is extremely low especially in the low-end. Also your SD table wants to be shifted around 3 vertical rows to the left. As you have it right now, you have moved your key efficiency range way later and under different boost levels. 1,5-2,0-2,5-3,0k rows should be more yellow than green at least based on my experiences so far. Of course, you need to give it what the car wants but it shows you are very lean in those ranges especially during WOT. Also I agree with the others, your Global Fuel needs adjusting so that the injector size becomes smaller (thus more fuel). Start with this so your Wideband matches your target AFR (11:1) then once you have that dialed, fine tune your early RPM rows at WOT in SD table.
Also, MORE TIMING!