sean's cheap thrills, 90 1.6 with subaru td04 - Page 64 - Miata Turbo Forum - Boost cars, acquire cats.

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Old 04-04-2016, 04:49 PM   #1261
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just smooth the map signal a tad. or put a filter on it.

but your restrictor idea is better cause it will net moar boost
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Old 04-04-2016, 04:50 PM   #1262
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Thats electrical noise. You should figure out where its coming from instead of smoothing it. It totally fucked with your injector DC.
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Old 04-04-2016, 05:13 PM   #1263
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likely that too, cause none of us seem to be experiencing this
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Old 04-04-2016, 05:28 PM   #1264
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Im almost positive its not "erroneous" noise, but actual pressure fluctuations caused by the WG/EBC. I did have some noise issues, but changing MAP smoothing from 95 to 50 fixed that.

The MAP is only spiky under boost when the wastegate is open at duty cycles 80% and less(when its actually having an effect), and the MAP wave is exactly 26Hz. Guess what my EBC frequency is.....

I have a really hard time believing the turbo system can be so reactive and transient at 26hz. Im wondering if the EBC is a boost leak when its modulating.
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Old 04-04-2016, 05:30 PM   #1265
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all of these 3ports work by pulsing the valve. except all of ours are fine and yours seems like it was tuned by Michael j Fox
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Old 04-04-2016, 05:33 PM   #1266
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all of these 3ports work by pulsing the valve. except all of ours are fine and yours seems like it was tuned by Michael j Fox
Help me out sunshine!
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Old 04-04-2016, 05:35 PM   #1267
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my guess is either noisy signal or overly sensitive map sensor
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Old 04-04-2016, 05:37 PM   #1268
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my guess is either noisy signal or overly sensitive map sensor
Shoud I keep smoothing below "50"?

Verify I hooked this up correctly, the left side of the solenoid you cant see has a little brass sintered filter on it. The line heading left goes to the intake, the one going right and down goes to WG. Standard MAC valve everyone uses.
sean's cheap thrills, 90 1.6 with subaru td04
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Old 04-04-2016, 05:50 PM   #1269
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I thought the standard spot for hooking up EBC boost source was pretty much on or right after the compressor housing. Not sure if that would make a difference though.
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Old 04-05-2016, 07:43 AM   #1270
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I've also not had issues like that, but I went with the autotune offered EBC valve.

Did you get your tachometer figured out yet? Also, now that we know the bracket for the LS coils will fit the 1.6L where can I find it at? I don't see it on the sadfab site.
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Old 04-05-2016, 08:23 AM   #1271
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Just for information "hwy66auto" on ebay declined my $40 offer on the same coils.
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Old 04-05-2016, 10:21 AM   #1272
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I thought the standard spot for hooking up EBC boost source was pretty much on or right after the compressor housing. Not sure if that would make a difference though.
So EBC source was same as the map source, teed off the FPR ref. Aidan scolded me, and now its going to the comp housing. Have yet to test drive to see what that does, that could definitely cause map fluctuations.

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I've also not had issues like that, but I went with the autotune offered EBC valve.

Did you get your tachometer figured out yet? Also, now that we know the bracket for the LS coils will fit the 1.6L where can I find it at? I don't see it on the sadfab site.
Which EBC value? Frequency? what valve?

Havnt touched the tach beyond making the new output circuit and enabling in TS. The tach will just barely flutter up to about 100 rpm when I rev it in neutral past about 4k rpm. So im kinda sure its wired right, just need to get a scope on it and see what the 1s and 0s look like.

It doesn't fit the 1.6 directly, remember. When I get a moment im going to make the changes on some MSpaint madness and give it to ryansmoneypit so he can update the CAD(I really need to learn CAD). SADfab isn't making them and wont unless we receive permission from Ryan, as it is his design, and has only approved sharing it as open source. Even then, we have lots of other stuff on our plate and I wouldn't have any made up any time soon. But if there's interested and Ryan gives no *****, who knows.

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Just for information "hwy66auto" on ebay declined my $40 offer on the same coils.
That sucks, its funny just a week ago they sold 5 or 6 sets at $40. Must have realized theyre actually worth something.
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Old 04-05-2016, 11:30 AM   #1273
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Message me, let's figure something out.
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Old 04-05-2016, 11:39 AM   #1274
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I run the diyauto valve at 19.5hz, I also limit to 0-30% valve duty cycle since it doesn't seem to bother spool.

Slow EBC down and limit the valve range as much as you can, see if that doesn't level the spikes. If you had EBC source on the intake manifold though who knows, whew, don't do that! Spool should be nice like that though, can't possibly get much better

Your EBC valve should also be set up as wastegate can only when it's off, safety and all. When the thing is working like that only a little bit of boost in the line after the valve up at the can is "leaked." If you plug that other port for some reason the wastegate can won't react as fast, it'll still have boost on it...
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Old 04-05-2016, 03:24 PM   #1275
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Quote:
Originally Posted by ryansmoneypit View Post
Message me, let's figure something out.
Will do, maybe not immediately, but one of us will be in touch.

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I run the diyauto valve at 19.5hz, I also limit to 0-30% valve duty cycle since it doesn't seem to bother spool.

Slow EBC down and limit the valve range as much as you can, see if that doesn't level the spikes. If you had EBC source on the intake manifold though who knows, whew, don't do that! Spool should be nice like that though, can't possibly get much better

Your EBC valve should also be set up as wastegate can only when it's off, safety and all. When the thing is working like that only a little bit of boost in the line after the valve up at the can is "leaked." If you plug that other port for some reason the wastegate can won't react as fast, it'll still have boost on it...
Will switch freq.
I think the way I had everything plumbed is definitely to blame. Ill find out later today when I get home and drive it.
I mean, just look at this mess, see how the WG line comes right off the map signal?(2nd tee coming off the intake from the FPR there) I think pulsing a small plenum (WG) that close to a teed sensor line would do that lol.


I have EBC solenoid plumbed so that WG is connected to intake under a no power situation or if there is a failure or if I connected a switch, etc. I verified last night, with my mouth , that its hooked up right.
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Old 04-05-2016, 04:00 PM   #1276
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^^I agree with that. Didn't realize your EBC was on the same line as your map sensor. That would definitely do it.
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Old 04-05-2016, 04:20 PM   #1277
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You'll overspool and spike the turbo running wastegate on the intake manifold, make lots of heat on partial boost pulls. You'll also tear the wastegate can apart showing it vac.

Sometimes it can work off the intake manifold, but not often.
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Old 04-05-2016, 05:14 PM   #1278
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I really don't know what i was doing the day i hooked that up... But, im known for nearing the end of a project or getting to an exciting stage, and getting excited and impatient and doing stupid ****. So there's that.

I don't recall giving wg source placement any thought whatsoever lol.
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Old 04-05-2016, 05:16 PM   #1279
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Manifold = No
Compressor housing = acceptable
right before tb = bestest.
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Old 04-05-2016, 06:06 PM   #1280
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I made a template of "Ryans super cool coil mount" and it doesn't clear the pvc on a 2000 1.8. I can send you my cad file after i get done tweaking it if you want.
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