[06stiman]

Made a few adjustments to my StreetTuner map and then logged the attached 4th gear pull. I'm pretty satisfied with the results and feel the tune is finally where I want it to be. I'm running 95 octane with the mods in my sig.

Let me know what you guys think.

Thanks!

[WolfPlayer]

Lookin' good!

1) If you are shooting for 19psi then you might be able to get rid of that 0.6psi spike by flattening your WGDC prior to 3000rpms. The usual idea is to keep WGDC higher before max boost in order to get the turbo to spool up quickly. However, if you are spiking then it can be helpful to not keep the WGDC higher before max boost rpms.

2) Have you experimented with timing yet? DA looks great and holds solid. I bet you can add more timing since you are running 95 octane.

3) If you get comfortable, you can play with cranking up the boost down low to generate more torque. Your call on that one though . Just make sure you do this separate from #2 above - lol.

4) Time for a ProDrive or GM solenoid so you can hold boost at redline better.

5) Time for a Wideband so you can dial the fuel in.

6) Is there a reason you are logging in ECUExplorer as opposed to StreetTUNER (if you do not have ST then ignore this question - I get it). Just asking because Turbo Dynamics in ST is very helpful.

t

[06stiman]

Originally Posted by WolfPlayer

Lookin' good!

1) If you are shooting for 19psi then you might be able to get rid of that 0.6psi spike by flattening your WGDC prior to 3000rpms. The usual idea is to keep WGDC higher before max boost in order to get the turbo to spool up quickly. However, if you are spiking then it can be helpful to not keep the WGDC higher before max boost rpms.

2) Have you experimented with timing yet? DA looks great and holds solid. I bet you can add more timing since you are running 95 octane.

3) If you get comfortable, you can play with cranking up the boost down low to generate more torque. Your call on that one though . Just make sure you do this separate from #2 above - lol.

4) Time for a ProDrive or GM solenoid so you can hold boost at redline better.

5) Time for a Wideband so you can dial the fuel in.

6) Is there a reason you are logging in ECUExplorer as opposed to StreetTUNER (if you do not have ST then ignore this question - I get it). Just asking because Turbo Dynamics in ST is very helpful.

t

Thanks Wolf for the valuable commentary. I'm currently logging using ECU Explorer since my caveman Serial-USB cable setup won't allow any live tuning or logging using StreetTuner. Everytime I try, the system crashes or produces garbage results. So for now I always tweak my maps offline, then load the modified map to my Accessport, then flash the map to the ECU, then go logging with ECU Explorer. Certainly not very efficient, but it's the best I can do until I decide to shell out the cash for a Tactrix cable.

To answer your other questions above:
1) Yes, my target boost is 19psi, so I'll try what you suggest.
2) I've done extensive research on my timing curve, and the current values seem to be ideal for my 95 octane. I've tried adding another degree or two, but my car will then lower the dynamic advance slightly about 50% of the time. I prefer to maintain the timing curve at a level that I can be confident it's adding the max dynamic advance 100% of the time. I think my current timing is pretty well matched to my boost and air/fuel curves.
3) I might try it once I grow a bigger set
4) Will be picking up a Prodrive eventually.
5) Will be getting an LM-1 once the wife allows it. Using a friend's LM-1 AFR guage, I've actually already verified that I'm currently running about 10.7:1 from 3K rpms to redline. A bit rich, but definitely safe.

[pharo]

wow 06stiman, I am really impressed what you were able to do. I have three questions though:
1) Did you learn all of this just from testing it out and reading forums?
2) Also, did you start from the streettuner base map?
2) Is there anyway to revert back to your protuned map by harman incase something goes wrong with streettuner (knock on wood it never happens)

When I come to socal would you mind explaining to me some more about tuning, as self-tuning sounds like a lot of fun, but I just don't know if I would be competent enough to do it.

[crystal_Imprezav]

Looks good. Here is an added bonus for you. This is what I use for Road Dynos and it is fairly accurate as compared to somewhere between a dynojet and mustang dyno. Your plot is compare to one of my recent meth pulls. Very smooth!

[STLSTI]

Nice what parameters are you using for that plot?. RPM and LOAD?.

[WolfPlayer]

You're going to make me go get an ECUExplorer log of my car to post

t

[06stiman]

Originally Posted by WolfPlayer

You're going to make me go get an ECUExplorer log of my car to post

t

Please do! I haven't seen any posted from you in a while. I'd love to see how you've got your car running.

[06stiman]

Originally Posted by crystal_Imprezav

Looks good. Here is an added bonus for you. This is what I use for Road Dynos and it is fairly accurate as compared to somewhere between a dynojet and mustang dyno. Your plot is compare to one of my recent meth pulls. Very smooth!

Thanks Crystal...very interesting. Now I'm betting if I go back to Harman Motive and have my map dynoed, the results will be pretty close to my last dyno there with Dan's protune map (307whp/346wtrq). I'm guessing 300whp/335wtrq considering I was likely a bit more conservative in my own tune.

So my question is, what the do you have on your car (besides the meth) that's making those numbers on your plot above? I thought you only had a Stage 2 car. Asssuming that's true, even with meth, how the heck are you making about 100whp/100wtrq more than me?!?! Very impressive.

[06stiman]

Originally Posted by pharo

wow 06stiman, I am really impressed what you were able to do. I have three questions though:
1) Did you learn all of this just from testing it out and reading forums?
2) Also, did you start from the streettuner base map?
2) Is there anyway to revert back to your protuned map by harman incase something goes wrong with streettuner (knock on wood it never happens)

When I come to socal would you mind explaining to me some more about tuning, as self-tuning sounds like a lot of fun, but I just don't know if I would be competent enough to do it.

Hey Pharo, thanks for the props. To answer your questions:

1) Lots of forum reading (especially posts by Wolf and CI), lots of book reading, lots of talking to my tuner, and lots of data log analysis. I've certainly paid my research dues.
2) Started with the stock base map and made adjustments from there. Granted, I spent a good amount of time studying the changes Cobb made in going from the stock map to their Stage 2 map.
3) Yes, I still have my Harman protune map stored on my laptop should I ever want to revert back to it. Of course, I'd have to unmarry the StreetTuner setup since his map's in Protuner format.

And yes, I'd be happy to meet up with you sometime and share some of the things I've learned. Just let me know.

[crystal_Imprezav]

Well those figures are more like a mustang dyno plus a little higher reading. It is actually really helpful as you can actually tell when your car pulls timing/fuel during a run. i.e. if you see my plot at right around 3200-3300rpms I was running too rich. If you look at your plot, you can see that at peak power around 5000rpms you timing didn't do anything and stayed at 20*. Ill bet if you get a log with 1 degree more you curve will go up. The info I use for this dyno is time and rpm. It uses gearing, approx weight (which I have dialed in nicely to match a real dyno result), and wheel size. It took a little fiddling around to get things running right but the basic skeleton for the stuff I got off nasioc a while ago.

Let see a log wolf! Why do you think I use both loggers now, lol. The abilities of ST wideband logging however are a far superior feature that any other logger is currently missing.

As for my mods: Well let see, I am at about 21-22 psi right not. That plus lets say at least 4-6* more timing than you and afr's at about atleast 1 point leaner than you will make a good bit more power than just stage2. The limiting boost of the 39 is a killer since I have my WGDC maxed at starting at 5000rpms. You can also see the evidence of the rich FMIC spike on the dyno plot as well. Right around 3000rpms I lose torque. Also look at my spool: I am not hitting peak torque until around 4800rpms.

[06stiman]

Originally Posted by crystal_Imprezav

Well those figures are more like a mustang dyno plus a little higher reading. It is actually really helpful as you can actually tell when your car pulls timing/fuel during a run. i.e. if you see my plot at right around 3200-3300rpms I was running too rich. If you look at your plot, you can see that at peak power around 5000rpms you timing didn't do anything and stayed at 20*. Ill bet if you get a log with 1 degree more you curve will go up. The info I use for this dyno is time and rpm. It uses gearing, approx weight (which I have dialed in nicely to match a real dyno result), and wheel size. It took a little fiddling around to get things running right but the basic skeleton for the stuff I got off nasioc a while ago.

Let see a log wolf! Why do you think I use both loggers now, lol. The abilities of ST wideband logging however are a far superior feature that any other logger is currently missing.

As for my mods: Well let see, I am at about 21-22 psi right not. That plus lets say at least 4-6* more timing than you and afr's at about atleast 1 point leaner than you will make a good bit more power than just stage2. The limiting boost of the 39 is a killer since I have my WGDC maxed at starting at 5000rpms. You can also see the evidence of the rich FMIC spike on the dyno plot as well. Right around 3000rpms I lose torque. Also look at my spool: I am not hitting peak torque until around 4800rpms.

Very impressive. How about posting some of your logs? I'd be really interested to see some WOT pulls.

[06stiman]

Hey Crystal, I think I may have just realized why my plotted graph is so much lower than yours. The 4th gear pull I included in this thread was made on a road with a significant incline. I'm assuming your calculations include acceleration, so with the incline my acceleration would be understated. What do you think?

[moswald80]

I also use ECU Explorer and a "road dyno" spreadsheet to see the effects of tuning changes. If Crystal_Imrezav's software works the way mine does (I can't think of any other way to do it) then the incline in the road will certainly affect the results. Here is a graph from my Road Dyno Spreadsheet:



This is on an FPGreen (so nobody freaks out about 20psi at redline) after a few days of tuning. It's a few months old but it's the only one I have here at work. I would be happy to plug anybody's logs into the spreadsheet and post (or e-mail you) the graph or I wouldn't mind posting the spreadsheet itself so that you guys could use it whenever you wanted to (although I may have to write some instructions because parts of the process can be a little confusing). I have only compared it to one real dyno. A friend of mine had his car protuned on the Mustang Dyno at IA Performance here in Tucson. Immediately after the protune we took a few logs and entered them into the road dyno spreadsheet. The road dyno read about 5-10% lower than the graph he got from IA.

06stiman, I'll try plugging in your log to see how it compares to Crystal's software.

- Mike

[moswald80]

Ok, here is what my "Road Dyno Spreadsheet" came up with from your log:



Same basic shape as Crystal_Imprezav's software came up with but his gives more detail as mine seems to apply too much smoothing to the curve. I added the smoothing to my spreadsheet after my first attempt produced curves that looked like heartrate monitors (or something, they were very spiky is what I'm trying to say). I will see what I can do to reduce the amount of smoothing on mine.