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Old 09-28-2012, 08:58 PM   #1
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Guys, First let me say I've been lurking and learning a lot already. I bought my kid's turbo project car from him last week, because he needed a "loan" and was selling his car. It's a 1.6L 1990 Miata with a Flyin' Miata Voodoo 2 package car that was converted to MS2 PNP and 1.8 injectors. The car has never been tuned properly and I'm starting from scratch with a car that is running, but runs to rich when wide open, and breaks up at about 4500-5000 RPM. I'll need help because I haven't tuned software for standalones before.

Here's the other rub. I'm learning a FAST standalone on another car, along with the FAST DASH touchscreen setup. So I'm game... I'll be reading as much as I can here, but I'll be asking questions as I go. I want this car to be reliable as a daily driver. And I want it to be safe for my wife or I to drive. I could stroke a check or swipe a card and have it tuned, but I'd really like to learn what the hell to do. I'll need to be smart on standalones for my other car anyway, so I figure now is as good a time as any.

I'm going to try to wire in his wideband 02 into the MS2PNP. From the other platforms experience, I know that will help me dial in the car more accurately with the wideband. Between that, the 1.8 injectors, and the "rest", I'd hope to have a fun and enjoyable car that will knock down decent MPG and still be fun!

Mike
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Old 09-28-2012, 10:51 PM   #2
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Sounds like a good plan. Getting the wideband hooked up to the megasquirt is definitely a good first step. Once it's wired and you learn the software you'll find the air:fuel tuning comes together very quickly. Once you're done it should be driving just like a stock car with a couple extra MPG.
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Old 09-29-2012, 07:17 AM   #3
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That's what I'm hoping. I'm first going to instal a new radiator, timing belt and waterpump, and hopefully track down an "elusive" coolant smell, first, and then tackle the 02 Wideband wiring. I also need to re-trace the wiring done for the Voodoo2 and confirm that none of that wiring is still in place.

As I said before, I'm sure I'll ask dumb questions, so apologies in advance.
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Old 09-29-2012, 01:00 PM   #4
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Quote:
Originally Posted by Mikelly View Post
I'm going to try to wire in his wideband 02 into the MS2PNP. From the other platforms experience, I know that will help me dial in the car more accurately with the wideband. Between that, the 1.8 injectors, and the "rest", I'd hope to have a fun and enjoyable car that will knock down decent MPG and still be fun!
Get that done & buy a copy of TunerStudio/MegaLogViewer. You'll be able to auto-tune the AFRs with the wideband just by driving it around for an hour or so. It makes tuning the daily driving portions of the map beyond easy.

Once you get all that figured out get some bigger/better injectors. The 1.8's are "okay" for the Voodoo setup, but the MS2PNP can control larger injectors that'll allow you to safely increase the boost (if you're so inclined to do so) and give more headroom.
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Old 09-29-2012, 01:53 PM   #5
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Quote:
Originally Posted by Mikelly View Post
... an "elusive" coolant smell
On a 1.6 this is almost gauranteed to be the "cursed water plug" on the back of the head on the intake side.

You will need to find a small child to remove the plug and install a new one for you. Here's a pic from the back of the motor:

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MSPNP1 virgin chiming in...-ecu_sensor_2.jpg  
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Old 09-30-2012, 08:14 PM   #6
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Pdexta thanks for that pic. It helps and kind of makes me think that is where it is coming from because all other hoses are looking good, but I saw evidence of coolant in the back of the undertray when I pulled it.

So today I started doing the timing belt and waterpump and found that a previous repair by someone else wrung a bolt off on the crank pulley, leaving only three of the four. Trying to get an easy out to it do get it backed out. Going to head to the auto parts store tomorrow to see if there is a better tool. Mine is worn pretty good.

On another note, the o2 sensor and gauge are the AEM UEGO gauge with the bosch wideband. Anyone else using this one?
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Old 10-02-2012, 11:09 AM   #7
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The AEM is a good, solid wideband. Not quite as fast responding as the Innovate units but less finicky.
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Old 10-07-2012, 03:45 AM   #8
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I'm in the same boat with a MS PNP setup on my 1.8L

I'll be checking back to this in the future =)
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Old 10-07-2012, 06:08 PM   #9
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Just wrapped up installing the new timing belt and waterpump, along with the new aluminum radiator. I'll splice in the wideband signal wire to the analog wire on the MS2. And I'll also replace that pesky plug in the pic above. Then it's "tuning" time.

Mike
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Old 10-08-2012, 02:24 PM   #10
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Everything is back together and apparently my kid had already wired the wide-band 02 into the ECU and disconnected the other OEM unit. I guess I need to drive the car and start letting it "learn" itself.

Also, my timing light was showing between 7-8 degrees timing (fluxuating a little bit). Should I not be seeing a static 10 degrees on the timing light?

Mike
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Old 10-09-2012, 08:32 PM   #11
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So today I manually Adjusted the timing back to 10 degrees. Tomorrow I'll do some tuning in the late afternoon and try to correct some issues. Yesterday when I drove the car before checking the timing, I found that it would accelerate all the way to redline from 2K Rpm slowly, and then when you get on the throttle hard and fast, it breaks down and bucks from 4500RPM hard... All ears guys...

Mike
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Old 10-09-2012, 09:04 PM   #12
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I'm pretty new at this too, but I know the things people are going to want to see are:
  • your tune
  • a log

Go to your project folder (usually My Documents > TunerStudioProjects > {project name}) and post your CurrentTune.msq, but do us a favor and copy then rename the copy to something like "MikellyTune.msq" and attach it to your next post. This will allow the more experienced guys to look at your settings and maps and see if something is configured incorrectly.

(While we are on this subject, update your signature with your car year/mods/turbo/management/etc so we don't have to go look for it. Its under your "User CP")

With TunerStudio open, go to the top menu and go Data Logging > Start Logging > Save. Change the name to make it easier to find (default location is My Documents > TunerStudioProjects > {project name} > DataLogs.) Go drive around a little bit but don't get crazy. When you are done, Stop the log and it should save. This will generate a .msl file that you should also attach to your next post. This will allow us to replay exactly what your car is doing: how it responds to throttle inputs, AFRs, boost, etc.

I would recommend you wire your wastegate OPEN on the turbo for now, and stay out of boost until you can get a better handle on the megasquirt. Your "breakup" could be an incredibly lean condition or detonation caused by too much advance, or any combination thereof. This will destroy your pistons/motor (but you probably already knew that)

I don't know about your sons age or skill level, but it might be worth taking the car off the road and checking the install against the instructions. The Voodoo2 kit instructions should be available online from FM and DIYAutoTune should have the instructions for the MS2PNP, along with "start-up" maps to get you back to square 1 if things are completely fuxor'd.

Good luck man!
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Old 10-09-2012, 09:14 PM   #13
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EO2K, Thanks man. Will take me probably 2 days to get to this. I didn't want to drive the car because of the detonation. That's why the brief "attempts" to drive it have been relegated to 2-3 mie drives that are very limited in getting into the throttle. We're not planning to drive this car until the tune issues are resolved.

Mike
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Old 10-09-2012, 09:27 PM   #14
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No worries! Keep us updated with your progress and we will do what we can to help.

The Megasquirt is an incredibly powerful tuning system but it also has an incredibly sharp learning curve. You will hate it, but if you stick with it, it can pay off.

I am currently in the "hate" stage of my relationship with my DIYPNP
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Old 10-10-2012, 06:59 AM   #15
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Edited my signature and info, but it isn't displaying yet... Here's what's in the car...

1990 Model Miata with Voodoo2 Turbo kit (Including clutch and full exhaust upgrade) along with 1.8 injectors, UEGO WB02, GM IAT amd upgraded fuel rails. Running MS2 PNP.

Mike
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Old 10-10-2012, 07:30 PM   #16
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Guys Here is a "baseline" file I actually ran last weekend before doing the timing belt. Only change since was replacing the belt and manually adjusting the timing to 10 degrees from about 8 degrees.

I am all ears, and will burn a better file if this one isn't acceptable. Need this car running right.

Mike
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File Type: msq Mikelly_2012-10-10_18.25.31.msq (39.2 KB, 95 views)
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Old 10-13-2012, 08:41 AM   #17
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OK guys today is the day. First thing I'm going to do is re-calibrate the 02 Sensor, as my kid said he didn't know he had to. So I'm going to do that and make sure the wideband gauge is matching what is on Tunerstudio live. I'll then start driving the car and self tuning. I'll post that data and the logs when done. I'm assuming I'll have a couple hours before I post anything today. Much appreciate all the help in advance.

Mike
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Old 10-14-2012, 07:56 AM   #18
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Well it didn't go so well yesterday. I noticed the TPS Value isn't moving at all. The Tunerstudio live wouldn't launch and there are a couple other parameters I don't think are adjusted correctly. So I am going to do some digging. I probably need to do a new tune from scratch. I did find that the WB02 was reading correctly.

Mike
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Old 10-14-2012, 12:27 PM   #19
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did you add a vTPS?
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Old 10-14-2012, 01:12 PM   #20
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Brain, Nope I didn't and now you're going to tell me why the above statement I made was dumb... Reading is fundamental...I'm learning this...

So here are the latest tune and datalogs. I adjusted the timing based on a video clip in the online setup and found that now the car runs VERY WELL to 5600 RPM then starts bucking again, detonation I'm sure. Someone care to tell me what they think about why it's doing this? I am in over my head right now, but happy that the adjustments made improved the situation... I have a 2004 GT3 and damned if this thing doesn't pull nearly as fast...

Mikelly2012-10-14_11.56.30.msl

Mikelly2012-10-14_11.51.34.msl

MikellyCurrentTune.msq

I am pretty stoked about the potential...
Mike
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