Tune learning with headers

[Bluemustang]

I had the battery unplugged for 3 days while I was getting the headers put on. NGauge doesn’t have a KAM reset but I think having the battery out for that long should’ve done it. I may try it again just to see if the long term trims learn the same thing. I guess my question now...is 5-8% off at low throttle enough to warrant a $50 tune review and potential slight revision?

Really? nGauge doesn't have that? See, this is why I like my SCT. Not as cool or convenient as the nGauge but it has all the features that I would actually need. Try looking again to see if it has it.

At this point, you sound worried (probably over nothing, which is OK). Maybe the peace of mind is worth the $50. Just send Lund the datalog and say hey, does anything look off to you? Maybe they will take a quick look and not charge you. They have helped me out a few times like that. One time they did ask me for a $50 revision fee which I was happy to pay.

I think the occasional spike in STFT may be normal, but I do not know for sure.

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[Bluemustang]

Pretty sure its keep alive memory. But resetting it does kill it

Oh YES of course! Lol. I knew that.

But yeah, KILL IT. lol

 

[AZ18yote]

Ah, I gotcha. Thanks!

Also good if you ever got bad gas etc. I tend to do one at least monthly.

 

[ManBearPig]

I left the battery unplugged overnight to reset the KAM. Put about 100 miles on today and the fuel trims are all quite a bit closer. Not sure why, but it seemed to learn better this time than last time. I guess I won’t question it too much, I’ll just roll with it but the logs I have reviewed look really good, at least what I know to look for.

Car pulls hard in the midrange with the longtubes and runs strong all the way up. maintains 30-31* to 7k. I admittedly don’t know a ton about tuning but I don’t see a lot of room for improvement here.

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