FI Build-up - German Plenum/TB & MS-1

[Vee Dub Nut]

IT LIVES!... Saw a hole pound of boost too

Tons of updates tonight.. I'm taking a lunch break from tuning

[kombicol]

Make with the updates already...

[Vee Dub Nut]

My first impressions... MAN I LOVE THE SOUND OF THAT TURBO. There is just something about the sound of it spooling up as your pulling away from a stop. Makes me smile every time

So I'm still VERY rough on tuning. I spent a lot of time over the weekend sorting out other small problems that didn't leave me as much time to tune as I wanted to. My plan was to start it up on Saturday, set the idle up, then start tuning the VE table. What actually happened was that I spent half the day chasing my tail trying to start the engine trying to figure out if I was having starter problems or ignition problems. In the end, it turned out it was both. Once I finally gave in a went to the autoparts store to pick up a new starter, then I was actually able to crank the engine over enough to figure out that my timing was out of phase. Turns out I just had my EDIS A and B coil triggers reversed. Oh and by the way, this is another plug for Mario. He told me to call him if I was having any trouble when I was working on it, and we talked two or three times throughout the day. It sure was great to have someone to bounce ideas off of. Excellent service!!!!

After I got it started it ran smooth as can be. I let it warm up and did a little tuning on the idle VE values to get a good MAP. During this time I noticed a few small oil leaks from my new full flow lines, and that my silicon hoses on my intake runners would halfway collapse under vacuum. So at the close of Saturday I spent my time fixing the few leaks and slipping in some 1.5" OD stainless tubing into my silicon runners to keep them from collapsing.

Sunday started with a little bit of struggling. I was having trouble starting it again and couldn't figure out how it ran so great the day before, but I couldn't get it running worth a crap then. Turns out during my maintenance the night before, I switched a couple of plug wires around. Oops Once that was fixed it fired right up. After that I spent some time driving around doing data logs but by the end of the day I didn't like where it was headed, so I back tracked a little bit after changing some of my settings in Megatune. This was mostly my fault. I goofed on my AFR target table. I'm primairly using data logs and megalog VE analyzer for tuning right now. If I don't get the results I'm looking for, I'll do more by hand.

Anyway.. here is proof that it runs. Keep in mind this is with very little tuning, and my accel enrichments are completely off (yes I figured out I don't have to turn of my accel enrichments for megalog viewer, it has that nice fancy filter that will over look them).

Removed the video.. see the more current one with a good tune in posts below.

So far I've only hit about 4lbs of boost. It pulled pretty good, but not as much as I was expecting. I think I went a little too conservative on my timing retard under boost, cause it pulls pretty good, but then you can really feel the drop in power when the timing backs all the way out. I have changed my spark map tonight and will test that theory tomorrow.

[Vee Dub Nut]

Oh.. also so far I have not noticed ANY drain back issues with my set-up. Here is a picture:

[MarioVelotta]

That is awesome!!

Did I forget to tell you about TunerStudio.... Ditch megatune before you get use to it

http://www.efianalytics.com/TunerStudio/

It has a new live tune I haven't been able to use yet and I really wanna know how it works

Looks like it is going pretty good. Idle PW and rpms are good and you have great vacuum too! I would add some more fuel at idle though. From what I have learned our motors don't like a stoich idle. Try 12.5-13.75:1 and see if it likes it better. Mine likes 12.5:1, and an advance of 12.

Mind if I add your nice video to my site?

[miniman82]

Ditto on the rich idle, mine smoothed out a lot going from 14.7 to 13 flat.

Great news, VDN! I'm just glad that turbo went to someone who put it to use, I bet it spools nicely on your engine and sound nice to boot!

[Vee Dub Nut]

Looks like it is going pretty good. Idle PW and rpms are good and you have great vacuum too! I would add some more fuel at idle though. From what I have learned our motors don't like a stoich idle. Try 12.5-13.75:1 and see if it likes it better. Mine likes 12.5:1, and an advance of 12.

Yea.. the video is after the data logs that I did on Sunday before I backtracked. The reason I backtracked was because I felt that the VE Analyzer was leaning me out to much. The idle was still ok, but I had a bad cruising lean surge. My idle now is closer back to what I started with which was 13-13.2 AFR. It idles nicely at that AFR.

Mind if I add your nice video to my site?

Why don't you wait until this weekend. I'll be taking a better video with the tune closer in and it should come out better. I'll be posting it up this weekend. Saturday is going to be another tuning day.

[Vee Dub Nut]

Ditto on the rich idle, mine smoothed out a lot going from 14.7 to 13 flat.

Great news, VDN! I'm just glad that turbo went to someone who put it to use, I bet it spools nicely on your engine and sound nice to boot!

Same comments I posted above on my AFR. That video was with the crappy tune before I backtracked to my richer table.

And yea.. that turbo is great. Sounds fantastic and although I don't have much to compare it too, it spools very easily. At the same time you can cruise down the road completely off boost and its happy as can be

[miniman82]

Cool, I'm just glad it went to good use. I really didn't want to get rid of it, but my debt right now says otherwise. About the VE Analyzer: I've heard from a few people that to get it to work reliably, you need to give it as many data points as possible. This means going for a long-ish drive, and driving at many different load points. The mistake I made was assuming it would know what to do with a short little log, and my reward was GIGO. I resorted to manual tuning which isn't really all that bad, it just takes longer that's all.

[Vee Dub Nut]

A much better video I made today

http://www.youtube.com/watch?v=mWPmNeomoV4

I'll try and get a driving one this weekend.

[Vee Dub Nut]

So I made a new VE map from my datalog that I took yesterday with my corrected AFR target table, and the car works MUCH better. I also advanced my timing some up on boost as I took it very conservative in the beginning, and the results are great! I'm maxing out at 5lbs of boost right now, and my peak duty cycle on the injectors was 86%. So I think I'm just about at the limit. Since I'm still running a cast crank anyways, I wont be turning the wastegate in any more until I can build up my engine. I don't want to take any unnecessary chances and gamble breaking my crank and ruining the rest of my engine.

The only thing I noticed that I needed to work on is my accel enrichment's. I could feel them kicking in and out when accelerating, and you can see them clear as day in the data logs.

Here is my current spark map:



Enjoy!

[MarioVelotta]

6 days no updates. I bet you haven't got out of the car yet, hope you brought water

[ToRy 70]

Did I forget to tell you about TunerStudio.... Ditch megatune before you get use to it

http://www.efianalytics.com/TunerStudio/

It has a new live tune I haven't been able to use yet and I really wanna know how it works

That looks handy if it does half of what it says. I especially like the SR's for shitty old laptops like mine. I've just been using megatune to record and then emailing the files to my desktop to use megalogviewer, then sending tweaked files back... this looks like a sweet program. Luckily I've been far away from my car for half a year, so it should be no problem starting afresh.

[miniman82]

My brother uses that program, says he likes it a lot. Took me buying him an MS to make him believe in the system, though. Unfortunately it's too late for me, I'm too used to the nuances of MT so that's what I continue to use.

[Vee Dub Nut]

6 days no updates. I bet you haven't got out of the car yet, hope you brought water

Hahaha.. been enjoying the car for sure. Just finishing up a few small odds and ends, like replacing the starter again (stupid autozone junk), crankcase breather lines, a couple small oil leaks, etc...

I did finally get the other output on my LC-1 programmed so that I could get my AFR gauge working. I set up analog one the same as the wideband analog two output that comes stock on the sensor, since my gauge is hooked up to one and the MS to two. After I got that done I took it out for a drive and noticed that my AFR gauge and MS didn't agree. After some investigation, turns out I had the wrong innovative option set for the lambda sensor in the configurator. The MS was set to 0v=10 and 5v=20 AFR, where as the sensor by default is set up as 0v=1.5lambda (7.35 AFR) and 5v=1.5lambda (22.05 AFR). There are two options for innovative o2 sensors in the configurator. Shame on me for not checking closer I guess. Needless to say, I was actually quite a bit richer than I thought I was (worst I saw was 9:1 under load). This explains the crappy fuel mileage I got out of that first tank LOL. I drove for about an hour doing a datalog, then used megalogviewers VE analyzer to correct the table using the new/correct scaling factor for the o2 sensor. As you would expect, it leaned out my table considerably. I'll be testing out the new table this afternoon (been crappy weather for the past few days, but sun shining and 80 degrees out today). I also squeaked in a little more on the wastegate to get a little more boost. Gonna push these 24lb/hr injectors for all they are worth

All in all it's running great!

I am slightly disappointed in the cam still. I have Mofoco 042 heads (larger vales, stock ports) and their hydro cam which has a very mild grind. I was hoping that going on boost would stretch the combo out some more, but although it pulls harder and quicker than before, I still cant get the thing to rev up past 4500rpm. Probably for the best with my cast crank. Moral of the story, a turbo can't fix a bad combo. Thats ok, it drives much better than before, and now I can enjoy driving it while I saw for a new forged crank, rods, cam, and head work. Then I'll be putting that second spring back in my wastegate