begi s3 / gt2860rs crew: what AR turbine did they send you? - Page 2 - Miata Turbo Forum - Boost cars, acquire cats.

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Old 12-03-2008, 11:26 AM   #21
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We use the 0.86 AR turbos. If you are not getting full boost, you might want to check the actuator. It could be you have a 7 psi one. Send me the #'s on the side of the can and I can find out what it is.

Paul-The inlets on the S4 kits have changed to 2.5" due to fitment issues around the PWS pump. However, most GT2554's and GT2560's have 2.25" inlet and the GT2860's and larger turbos have a 3" inlet. The only recent change was the S4 inlet sizing.
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Old 12-03-2008, 11:39 AM   #22
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Thanks Stephanie. I can't get to the car for a week or two, but I'll just bring it to you and let you "call me when its done." It hurt to put that car together after waiting 2-years, put 200 miles on it, then get in the rental car and leave it sitting for a month.

Why did my turbo get the little inlet welded on?

Are you tired of me yet? I promise to drop my car off soon, shut up, and just drive the car.
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Old 12-03-2008, 11:42 AM   #23
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Quote:
Originally Posted by pschmidt View Post
I have the Gt2860Rs .86AR and I'm at 12 psi by a tick after 3,500rpm. S4 manifold through.

The spark map will help out tremendously.
Throw your map up if you have it
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Old 12-03-2008, 12:01 PM   #24
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I could really use a spark table for a gt2860rs on a 1.8. I'm at 8.8:1 compression, running 93 octane, so its probably a good bet.
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Old 12-03-2008, 12:29 PM   #25
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Throw your map up if you have it

If you feel like installing the Xede software, I'll certainly post it.
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Old 12-03-2008, 12:32 PM   #26
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If you feel like installing the Xede software, I'll certainly post it.
Downloading it now.

It can at least provide reference points vs actual useable map for my MS of course
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Old 12-03-2008, 02:51 PM   #27
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480009-6


Looks like I have the 12-14psi spring. I wonder if that is going to be too much boost?
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Old 12-03-2008, 02:54 PM   #28
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Quote:
Originally Posted by Splitime View Post
Downloading it now.

It can at least provide reference points vs actual useable map for my MS of course
I'll post the map tonight. Keep in mind, Xede's map is relative to the ECU's timing values, not absolute like MS.

If you can translate it to MS talk, send me a copy. I'm dropping the Xede here shortly.
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Old 12-03-2008, 03:11 PM   #29
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I'll post the map tonight. Keep in mind, Xede's map is relative to the ECU's timing values, not absolute like MS.

If you can translate it to MS talk, send me a copy. I'm dropping the Xede here shortly.
I'll take a swat at it. I'm interested in the range of values themselves more so than the specific tune.
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Old 12-03-2008, 03:23 PM   #30
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Quote:
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I'll take a swat at it. I'm interested in the range of values themselves more so than the specific tune.
I've heard that the stock ecm uses either 32 or 34* advance across the entire rpm range at full throttle from a reliable source. I don't know about off-boost #'s.
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Old 12-03-2008, 03:39 PM   #31
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sounds like someone is having the same kind of bullshit problems I did....
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Old 12-03-2008, 03:49 PM   #32
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I'm guessing slow spool likely has more to do with the WG/ wg actuator/ flapper than conservative timing.

Take a look at this thread. There's several guys MS spark maps here. Look for one that's middle of the road. Should be a good place to start. Of course you should post up all your MS settings to let everyone pick apart and help. https://www.miataturbo.net/forum/t18648/

Please note: anything I say could cause your car to spontaneously combust, implode, explode or otherwise fail in spectacular fashion!
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Old 12-03-2008, 04:21 PM   #33
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sounds like someone is having the same kind of bullshit problems I did....
Stephanie said that everything will be OK, so I'm going to let them take care of it. I'm sure they'll make it right.
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Old 12-03-2008, 08:35 PM   #34
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Awwww....it looks so cute.
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Old 12-03-2008, 09:10 PM   #35
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Quote:
Originally Posted by Splitime View Post
I'll take a swat at it. I'm interested in the range of values themselves more so than the specific tune.
PTS_Leaned2_cruise_more_timing.BAK:
Invalid File

Looks like I can't attach the file here. If you have an email address I can send this to, PM it to me and I'll send the map.
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Old 12-03-2008, 09:28 PM   #36
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zip it, then upload.
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Old 12-03-2008, 09:57 PM   #37
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[email protected] and i'll play with it at work tomorrow.
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Old 12-03-2008, 10:16 PM   #38
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I'm with the adjust the arm crew. When we installed my cousins greedy on the Del Sol, we had the same problem. We adjusted the arm and presto, it hit boost properly.
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Old 12-03-2008, 11:09 PM   #39
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Quote:
Originally Posted by Braineack View Post
zip it, then upload.

Too much work after a 16 hour workday

Here are all the maps I have. I'm pretty sure the map I use is in the folder 7-15-08; I will verify during the day. More timing after dyno or something like that.Maps.zip
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Old 12-04-2008, 09:26 AM   #40
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I'm with the adjust the arm crew. When we installed my cousins greedy on the Del Sol, we had the same problem. We adjusted the arm and presto, it hit boost properly.
I have to get a softer spring. I don't know that this motor is ready for 1BAR yet.
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