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.
Stephanie

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.

Throw your map up if you have it :)

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.

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 :p

480009-6


Looks like I have the 12-14psi spring. I wonder if that is going to be too much boost?

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.

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.

sounds like someone is having the same kind of bullshit problems I did....

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!

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.

Awwww....it looks so cute:).

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.

zip it, then upload.

splitime@gmail.com and i'll play with it at work tomorrow.

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.

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.Attachment 9204

I have to get a softer spring. I don't know that this motor is ready for 1BAR yet.