Can you guys take a look at my log/msq - Miata Turbo Forum - Boost cars, acquire cats.

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Old 02-10-2009, 04:05 PM   #1
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Default Can you guys take a look at my log/msq

I've been playing around with this, trying to learn the software, I've only had a few hours so far in the miata, and I'll admit I don't know as much about MT as I should.

It was running OK albiet a bit rich until I reflashed this newest map, all I did was change the fuel map, car now has lean tip in...goes stupid ******* rich when it shouldn't...

Everyonce in a while, the idle will just go lean as ****, like 17:1 or so...Can you guys just take a look and give me some suggestions. Last night was also the first time I've ever had problems with idle.



I have a VTPS waiting to go in as well as EBC...but I don't want to just add more problems yet.


Log A is heading to my friends house, log B is taking a friend or two for a ride. The logs are with this MSQ, nothing has been changed.
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File Type: msq MyFile2.msq (35.3 KB, 46 views)
File Type: xls 2-9-09A.xls (1.35 MB, 50 views)
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Old 02-10-2009, 04:31 PM   #2
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I dont see lean spikes at idle, only on throttle. looks like you need more fuel during your acceleration enrichments. vtps (TPSdot) will help dramatically with that.
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Old 02-10-2009, 07:10 PM   #3
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Also, what is with a lot of the off throttle leaning? How do I turn decel fuel cut off, it would make it easier on me for now to read the logs, EVERY time I let off it goes leaner than ****. I can't wait to get the VTPS in there and actually be able to play with it.

Also, I'm idling at 16-17 vac, shouldn't it be closer to 20? and are the off throttle/engine braking sub 20 KPA spots normal?


Anything that would cause a very inconsistent idle AFR? Vac leak maybe? Only seems to **** up after I hot start. Runs stupid lean, trying to find it on a log to show you. Sometimes it goes away if I restart, other times if I just drive for a second it stutters and fixes itself.
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Old 02-10-2009, 07:45 PM   #4
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Your VE table is why you run so lean. What AFR table are you tuning to? Been hanging around AbeFM too much? My VE table has a lot more fuel in it than yours. Yours is weird. I can tell you how to make it run smooth and strong, but some here think I'm full of ****. But basically I'd tune the VE table richer. And tune it so that you run say 14:1 or so at max vacuum when you shift or engine brake. Then the engine doesn't hickup when you change load. My Ve table for comparison. Smooth as buttah better-than-stock driveability.

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Old 02-10-2009, 11:44 PM   #5
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targets are 14.4 at idle...when it is running RIGHT I idle at 13.1 Sometimes it just decides to tell me to **** off and go stupid lean/stumble, etc.

Usually its very rich across the board. Unstable though, very bouncy AFRs.
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