Well, the gt-35 is in, UTEC tuning time..
Well here is the latest. Idle is o.k. But just barely. Bought a scan tool, and it dont work like the box said. So will get another. Upped the Hz frequency to 2000. That solved half of everything. Before today, i hit fuel cut at 6800 EVEN with the fuel cut set at 0(off). Dont know what thats about. Holy crap. At 22 psi with 106 octane, its scarry. My heart is still pounding!! Here is the latest data log. Please add your comments. Its those comments that are helping me out more than you know!! Thank you Ray
Code:
Load Knock Mod Mod Mod WB
RPM MAP MAF TPS Site Count Ign#1 Inj#1 Ign Fuel Boost MAF AFR
psia Hz % deg duty deg % (OL) Hz
886 27.4 30 0 0 0 0.4 1.7 20 0 ECU. 30 14.78
897 27.4 30 0 0 0 0.4 1.1 20 0 ECU. 33 14.78
892 27.4 31 0 0 0 3.2 1.1 20 0 ECU. 32 14.83
863 27.4 33 0 0 0 5.2 1.7 20 0 ECU. 34 14.74
843 27.2 34 0 0 0 8.6 1.5 20 0 ECU. 33 14.53
2581 27.2 279 100 10 0 25.5 10.5 26.1 -2.3 ECU. 296 11.76
2614 27.2 287 100 10 0 23.3 11 26.2 -2.3 ECU. 289 11.53
2679 27.2 292 100 10 0 23 11 26.4 -2.3 ECU. 441 11.37
2732 27.4 302 100 10 0 24 11.4 26.6 -2.3 ECU. 426 11.33
2766 27.2 303 100 10 0 23.3 12.2 26.9 -2.3 ECU. 309 11.33
2849 27.4 334 100 10 0 23.4 12.7 26.3 -2.3 ECU. 482 11.23
2901 27.4 345 100 10 0 23.4 13.5 25.9 -2.3 ECU. 390 11.08
2939 27.2 367 100 10 0 23.5 13.6 25.5 -2.3 ECU. 229 10.93
3008 27.2 382 100 10 0 21.3 14.2 24.8 -2.3 ECU. 218 10.9
3095 27.2 400 100 10 0 21.3 15.1 24.7 -2.3 ECU. 625 10.93
3138 27.2 416 100 10 0 21.4 15.4 24.6 -2.3 ECU. 573 10.93
3236 27.2 429 100 10 0 20.7 16.1 24.4 -2.3 ECU. 506 10.89
3277 27.2 444 100 10 0 21.4 16.8 24.3 -2.3 ECU. 675 10.93
3373 27.4 461 100 10 0 19.7 17.9 24 -2.3 ECU. 769 10.95
3411 27.2 527 100 10 0 20.8 17.4 23.8 -2.3 ECU. 555 10.83
3486 27.2 534 100 10 0 19.7 20.3 23.4 -2.3 ECU. 865 10.68
3576 27.2 568 100 10 0 18.7 20.6 23.1 -2.3 ECU. 258 10.65
3646 27 618 100 10 0 18.7 22.8 22.9 -2.3 ECU. 257 10.56
3741 27.2 544 100 10 0 18.7 22.8 22.5 -2.3 ECU. 615 10.27
3813 27.2 566 100 10 0 19.8 23.5 22.4 -2.2 ECU. 547 10.06
3871 27.2 642 100 10 0 20.8 23.6 22.7 -2.1 ECU. 778 10.09
3940 27.2 641 100 10 0 19.8 23.9 23 -1.9 ECU. 728 10.23
4016 27.2 620 100 10 0 19.8 24.5 23.3 -1.8 ECU. 737 10.4
4084 27.2 642 100 10 0 19.9 25.8 22.7 -1.8 ECU. 645 10.43
4177 27 696 100 10 0 18.8 27.2 22 -1.8 ECU. 645 10.45
4246 27 715 100 10 0 17.7 28.1 21.4 -1.8 ECU. 694 10.45
4317 27 784 100 10 0 16.7 29.8 20.5 -1.8 ECU. 847 10.42
4403 27 821 100 10 0 15.7 31.8 19.1 -1.8 ECU. 728 10.42
4486 27 904 100 20 0 15.6 33.1 17.9 -2.9 ECU. 939 10.43
4591 27 950 100 20 0 13.9 36.8 16.1 -2.9 ECU. 755 10.43
4721 27 1046 100 20 0 13 39.8 14.4 -2.9 ECU. 1033 10.43
4837 26.8 1154 100 30 0 10.8 46.8 13.1 -4 ECU. 1046 10.42
4975 26.8 1201 100 30 0 9.9 50.3 12.2 -4 ECU. 1207 10.26
5065 27 1351 100 40 0 8.8 55.2 11.1 -5.1 ECU. 1275 9.87
5192 27.2 1628 100 50 0 8.8 61.7 10.1 -6.2 ECU. 1543 9.65
5367 27.2 1754 100 60 0 6.1 67.7 9.7 -7.4 ECU. 1811 9.76
5509 27.4 2173 100 70 0 7.1 74.5 9.4 -8.8 ECU. 1322 9.81
5649 27.2 1760 100 80 0 6.2 69.4 11.1 -10.4 ECU. 1851 10.06
5807 27.2 2164 100 90 0 10.2 77.9 12.2 -12 ECU. 1689 10.42
6016 27.2 2100 100 90 0 11.2 78.9 13.4 -12 ECU. 1923 10.65
6161 27.2 2173 100 100 0 12.1 76.8 15 -13 ECU. 1712 10.76
6349 27.2 2100 100 100 0 13.3 78.2 16.4 -12.8 ECU. 1798 10.89
6535 27.2 2100 100 100 0 15.6 76.3 17.5 -12.8 ECU. 1893 11.05
6693 27.2 2040 100 100 0 16.1 76.7 19.3 -12.8 ECU. 1773 11.08
6830 27.2 2212 100 100 0 18.4 79.8 20.8 -12.8 ECU. 1879 11.11
6988 27.2 2252 100 100 0 19.6 80.2 21.8 -12.8 ECU. 1923 11.11
7168 27.2 2252 100 100 0 20.7 85.3 22.3 -12.8 ECU. 1879 11.11
7309 27 2272 100 100 0 20.5 82.9 ECU. -12.8 ECU. 1923 11.08
7423 27.2 2173 100 100 0 20.8 82.1 ECU. -12.8 ECU. 1908 11.08
7558 27.2 2314 100 100 0 22 84.6 ECU. -12.8 ECU. 1923 11.05
one more thing, Look at the injector duty cycle. 22psi and ime at 85%. That sucks. These are 780cc's. (what a rush!!) Oh and one more thing, i will have all the parts for the MAP setup this week.
Originally Posted by rraulston
Jermaine, do i still need to go to 2300Htz like you said??? or is the 2000 o.k?? Please advise.. Ray
Thats alot of air! 
Oh and if you raise the boost for race gas.. don't be surprised to hit 3000hz
Last edited by MalibuJack; Mar 27, 2005 at 04:58 PM.
2300 hz seems alright but if you plan on turning the boost up you will probably want to go to about 2500 hz or so.. It will depend on you though. Also, You need to lean the car out.. almost everywhere. By redline you want to be abou t 11.4 - 11.5. This will keep your making good power up their. Looks good, though...
WTF is that.. common man..
Good luck with tuning
Jermaine~
Code:
100 40 0 8.8 55.2 11.1 -5.1 ECU. 1275 9.87 5192 27.2 1628 100 50 0 8.8 61.7 10.1 -6.2 ECU. 1543 9.65 5367 27.2 1754 100 60 0 6.1 67.7 9.7 -7.4 ECU. 1811 9.76 5509 27.4 2173 100 70 0 7.1 74.5 9.4 -8.8 ECU. 1322 9.81 5649 27.2 1760 100 80 0 6.2 69.4 11.1 -10.4 ECU. 1851 10.06
Good luck with tuning

Jermaine~
o.k. i upped the idle like jack said. You know, that little screw on top of the throttle body. Hope thats o.k. Now, when i read the fuel trim, do i look at the short term or long term?? And when i see it in the negative, do i add fuel at that RPM in load 0 or what?? Thanks guys.......
Originally Posted by rraulston
o.k. i upped the idle like jack said. You know, that little screw on top of the throttle body. Hope thats o.k. Now, when i read the fuel trim, do i look at the short term or long term?? And when i see it in the negative, do i add fuel at that RPM in load 0 or what?? Thanks guys....... 

If you see negative values you should enter small negatives values in your 0 percent column and vice versa.
Understand?!?
Thanks,
Jermaine~
well, here is the latest. Got the scan tool. Its awsome. I can watch the long and short term fuel trim in analog or digital gauge. Pretty neat. So i go to the 0% column and adjust the fuel till the short term trim is + or- 5% Thats all i could manage. The setting by the way is 35% fuel. Up to 5000RPM however. At 5000rpm, the engine cuts and backfires. It is as if the launch controll is activated. (it is not) but if you push the pedal harder, you can go through it, but its real rough. You CAN NOT hold the RPM at 5000rpm. It sputters, drops rpm, picks up again and repeats. One thing i did notice is in the dashboard, at 5000 rpm, you can see the "OL" blink on and go out then back on. So i think the transition between CL and OL happens at 5000 rpm and its screwing everything up. I cant figure out anything else to do.....This was never the case with the other turbo. Ime at the point of going back stock. Just frustrated. I wonder if the AEM whould have similar issues......Ray
Originally Posted by rraulston
well, here is the latest. Got the scan tool. Its awsome. I can watch the long and short term fuel trim in analog or digital gauge. Pretty neat. So i go to the 0% column and adjust the fuel till the short term trim is + or- 5% Thats all i could manage. The setting by the way is 35% fuel. Up to 5000RPM however. At 5000rpm, the engine cuts and backfires. It is as if the launch controll is activated. (it is not) but if you push the pedal harder, you can go through it, but its real rough. You CAN NOT hold the RPM at 5000rpm. It sputters, drops rpm, picks up again and repeats. One thing i did notice is in the dashboard, at 5000 rpm, you can see the "OL" blink on and go out then back on. So i think the transition between CL and OL happens at 5000 rpm and its screwing everything up. I cant figure out anything else to do.....This was never the case with the other turbo. Ime at the point of going back stock. Just frustrated. I wonder if the AEM whould have similar issues......Ray 

What happend to posting logs man. Did you have the 5k hiccup before you entered +35% correction in the map? After 5k OLF turns on regardless of your TPS.
Thanks,
Jermaine~
I'm assuming your talking about the 0% column.. the easiest thing I found (if you didn't have that happen before) is to taper from 35% to 0% from around 3500-5000 this way it gradually goes back to normal.. The reason I suggest this is because most of your daily driving will be at 2500-3600rpm, where the fuel trims will allow for best drivability.. you should RARELY be in the 0% column anywhere above that cruise range unless your driving at high speeds, so you can tune for that gradually.. This will allow your idle and cruise to 'Influence' the long term and short term trims and give you the best drivability.. Especially since you'll be close to getting a good idle, however.. If your already adjusted for most of your fuel needs, you really only need to adjust your trims at idle through 2500rpm where the car could end up on cold start idle..
The short term trims will shift to long term after a few run cycles.. so you should look at both the short term and long term.. I use the long term trims to see how far to go, then the short terms to see how "off" it is.. Then I reset the ECU and restart the car and watch to see the short and long term trims, the closer to +/- 0 you get, the smoother the car will run (less hunting) Plus should the trims reset, the ECU won't feel "Odd" as its learning.
I posted in another thread about getting good idle..
I would like to suggest to turboXS that they add a simple frequency clamp at idle, basically if the MAF sensor frequency drops below that set point, it never drops below that particular level.. I have found that this should stabilize your idle with low or unstable airflow readings from big turbos or cams.. Additionally, it **SHOULD** prevent a aftermarket MAF tubes and possibly non-recirculated BOV's from stalling the car.
How did I figure that out? Well, my blowthrough sensor has a "Low limit" that its calibrated at.. No matter what you do, it doesn't go below that point.. It seems that giving a very stable frequency offers a really stable idle
The short term trims will shift to long term after a few run cycles.. so you should look at both the short term and long term.. I use the long term trims to see how far to go, then the short terms to see how "off" it is.. Then I reset the ECU and restart the car and watch to see the short and long term trims, the closer to +/- 0 you get, the smoother the car will run (less hunting) Plus should the trims reset, the ECU won't feel "Odd" as its learning.
I posted in another thread about getting good idle..
I would like to suggest to turboXS that they add a simple frequency clamp at idle, basically if the MAF sensor frequency drops below that set point, it never drops below that particular level.. I have found that this should stabilize your idle with low or unstable airflow readings from big turbos or cams.. Additionally, it **SHOULD** prevent a aftermarket MAF tubes and possibly non-recirculated BOV's from stalling the car.
How did I figure that out? Well, my blowthrough sensor has a "Low limit" that its calibrated at.. No matter what you do, it doesn't go below that point.. It seems that giving a very stable frequency offers a really stable idle
Last edited by MalibuJack; Apr 2, 2005 at 10:31 AM.
Jack, my idle is almost perfect. When i rev it up and let off abruptly, it stalls out. So drivability sucks in town. Its just the 5000K issue now. When i hammer it out on the road, its not as noticable, but when stopped and reving up to 5K, just backfiring like fuel cut....Ill try the taper to 0% and see what happens.
What's your 0 column look like? Just set everything above 2k or so to 0 in the 0% column. I had a problem like that on a friend's car. Car kept bucking from the fuel.
Last edited by Widebandphillip; Apr 2, 2005 at 10:46 AM.
o.k. here is the latest. Went out on the road today to tune. I had a driver and all, so i was glued to the laptop. First run and we hit 30lbs of boost. I have never been in anything that fast in my life. OMFG. But thats not what ime interested in. I want a steady 24 lbs of boost no more. Spent the next 2 hours trying to figure out what the issue was and i found it. The solenoid in my EVC is bad and that 35R just keeps spoolin. So no more tuning till i can controll boost. By the way, i was logging and had NO knock!!!! Thats on 100 octane. 3200Hz of air!!!!!!!!!! Idle is perfect with my trims set, but it still stalls everytime i stop...
rraulston,
I'm having the same "stalling when release the throttle abruptly" problem as you and I only have SAFC for the tune (RNR GT35r kit). I noticed that it only happened when I'm still push in the clutch but if I let the clutch out before let go off the throttle then it'll rarely stall (I don't recall any). Please let me know if you found any resolution for it. Thanks.
I'm having the same "stalling when release the throttle abruptly" problem as you and I only have SAFC for the tune (RNR GT35r kit). I noticed that it only happened when I'm still push in the clutch but if I let the clutch out before let go off the throttle then it'll rarely stall (I don't recall any). Please let me know if you found any resolution for it. Thanks.



