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Well, the gt-35 is in, UTEC tuning time..

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Old Mar 27, 2005 | 04:33 PM
  #16  
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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
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Old Mar 27, 2005 | 04:36 PM
  #17  
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Jermaine, do i still need to go to 2300Htz like you said??? or is the 2000 o.k?? Please advise.. Ray
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Old Mar 27, 2005 | 04:39 PM
  #18  
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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.
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Old Mar 27, 2005 | 04:54 PM
  #19  
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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
Set your hz to 25 and the fuel cut hz to 2500hz too.. 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.
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Old Mar 28, 2005 | 06:40 AM
  #20  
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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...

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
WTF is that.. common man..

Good luck with tuning

Jermaine~
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Old Mar 31, 2005 | 08:06 AM
  #21  
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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.......
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Old Mar 31, 2005 | 08:10 AM
  #22  
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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~
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Old Apr 2, 2005 | 09:18 AM
  #23  
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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
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Old Apr 2, 2005 | 09:25 AM
  #24  
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Just take it to Clark Turner @ Kingpin and be done with it
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Old Apr 2, 2005 | 10:06 AM
  #25  
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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~
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Old Apr 2, 2005 | 10:27 AM
  #26  
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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

Last edited by MalibuJack; Apr 2, 2005 at 10:31 AM.
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Old Apr 2, 2005 | 10:39 AM
  #27  
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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.
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Old Apr 2, 2005 | 10:42 AM
  #28  
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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.
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Old Apr 3, 2005 | 06:50 PM
  #29  
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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...
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Old Apr 3, 2005 | 07:52 PM
  #30  
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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.
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