'90 Build: Not Really Faster, Just Less Slow - Page 6 - Miata Turbo Forum - Boost cars, acquire cats.

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Old 05-17-2016, 10:00 AM   #101
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I don't think I've ever seen any engine run with the timing that far off. BP powa!!!

Always start with the basics. Low hanging fruit first. Glad you got it fixed.
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Old 05-17-2016, 03:07 PM   #102
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Check your ignitor, i am/was having similar issues with faulty ignitor, had it set up wrong in ms which faulted the part. Also where in NH are you? Id love to check this out, beinig another turbo mariner.
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Old 05-17-2016, 05:19 PM   #103
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I have COPS, so no more igniter. That, and the major misfire/breakup issues seem to have been solved by unfucking the cam timing.

I'm a little east of Manchester, hoping to make it to a street night this summer at New England Dragway, once my tune is good.
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Old 05-18-2016, 12:22 PM   #104
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Naturally aspirated:

Trubo:


I was thinking that the car sure feels fast for only 8psi wastegate pressure, then I noticed my boost gauge reaching 15 psi over 5,000 RPM. Apparently I need to port the wastegate a wee bit more than I already have and check what my boost cut settings are. I'll collect a log after I recalibrate/replace my O2 sensor.
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Old 05-26-2016, 09:27 AM   #105
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Over the last week I pulled the turbo out and enlarged the wastegate hole to within 2mm (radial) of the flapper diameter. Previously, I'd just ported it and left the hole size unchanged. Now, I'm showing a pretty solid 8 psi to redline, so that's comforting (if not quite such a kick in the pants). I neglected to take pictures, because I was only getting about 60 minutes a day to work on the car.

A couple questions:
  • In my datalog, AFRTarget is just a flat line. This should essentially show what my AFR table is, yes? Do I need to enable EGO correction to get AFRTarget to display in the log? I'd like to be able to make manual tweaks to my VE table and tune AE some more. I was autotuning during most of the log, if that makes any difference.
  • How should I determine an acceptable size for recirculated BOV tubing? I have a TurboSmart Kompact dual port BOV that vents to atmosphere right now, with the recirculating port plugged. The BOV makes a lot of noise even on easy-driving shifts and that's a little more attention than I want to draw to myself. I have a 1/2" NPT port that I can install in my compressor inlet silicone elbow, but that seems rather small, given that the BOV came with a 34mm output port.
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Old 05-26-2016, 11:39 PM   #106
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The snow is gone but I"m still having a hard time getting up my driveway.


And my real estate agent didn't understand why I was adamant about no homeowners associations.
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Old 06-09-2016, 09:27 AM   #107
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I've got second Miata in my driveway for a little while. My father is selling his NB because I made an off-hand comment that at 68 years old he'd probably be better off in an ND.

Lots of pollen floating around right now.





And I found some time to build a chicken coop.



Fresh eggs, buk buk.

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