AFR's changing, no changes to fuel map
03-11-2012, 03:16 PM
#1
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AFR's changing, no changes to fuel map
I've been fighting this for a long time and never got to a solution so I think its time to make a thread about it.
My target AFRs in boost were set to 11.5ish, and after some tuning I would see 11.2-11.4. Not bad. However, these values have moved all on their own.
In boost sometimes I will see 11.2, sometimes 10.9, and sometimes 10.4, which is way richer than I want to be. It doesn't really seem dependent on weather conditions, I have no leads as to why this is happening. This is all without ever even plugging my laptop into the MS. I have not changed anything. I'm going to retune tonight and see what happens over the next couple of days. I would say this is not an LC1 problem, I've gone through new sensors, rewiring, complete removal and reinstallation over the past 3 years and my AFR's never stayed stable for more than a couple weeks.
My question is: Has this happened to anyone else, if so, what did you do to fix this?
My target AFRs in boost were set to 11.5ish, and after some tuning I would see 11.2-11.4. Not bad. However, these values have moved all on their own.
In boost sometimes I will see 11.2, sometimes 10.9, and sometimes 10.4, which is way richer than I want to be. It doesn't really seem dependent on weather conditions, I have no leads as to why this is happening. This is all without ever even plugging my laptop into the MS. I have not changed anything. I'm going to retune tonight and see what happens over the next couple of days. I would say this is not an LC1 problem, I've gone through new sensors, rewiring, complete removal and reinstallation over the past 3 years and my AFR's never stayed stable for more than a couple weeks.
My question is: Has this happened to anyone else, if so, what did you do to fix this?
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03-11-2012, 03:25 PM
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Sounds like you have some compensation messing with it (air temp, coolant, MAP, etc) or your fuel pressure is changing (but it would have to change a lot to do that). Take some logs and compare.
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03-11-2012, 03:41 PM
#3
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Here are my settings.
How many people here are running the clt advance? I thought mine was on but I guess not.
I guess I'm gonna run some logs later, and then run VEAL after that.
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