5k rpm studder with UTEC
Originally Posted by BSREVOLUTION
i wasn't able to change the injectors today, but i did get the ecu reflashed to stock. not the car is running a ton better. im going to wait to tune until i get a tuner.
Cool i am glad we pinpointed the problem. When you sent me the email about your ecu being flashed, i literally jumped off my seat and called you. Shoot me an email or call me.
Lu
BSREVOLUTION,
There was another thread /poll in here about dynoflashes of somekind in combo with the UTEC. The majority of people had problems including me. I got the p0300 relash and it was like wow...that made a difference. Good to see you feel it running better. Let us know on the tuning once again.
There was another thread /poll in here about dynoflashes of somekind in combo with the UTEC. The majority of people had problems including me. I got the p0300 relash and it was like wow...that made a difference. Good to see you feel it running better. Let us know on the tuning once again.
sure thing. im getting the pro and getting smaller rc 750cc. and hoping everything is cleared up. i want to go back to the dyno, but i dont want to make that two hour trip for nothing again. ill let everyone know what happens. jc
Mine is doing it now also. This is a 1-2-3 shifting log. In third you can see the rpm waver!!! this is pissing me off.......
I hope you can read this. i still cant figure out how to posts these logs right.....RRR
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
859 27.6 38 0 0 0 3.2 1.6 ECU. 0 ECU. 37 14.61
863 27.6 38 0 0 0 5.1 1.6 ECU. 0 ECU. 41 14.61
818 27.6 38 0 0 0 3.2 1.5 ECU. 0 ECU. 38 14.58
856 27.6 38 0 0 0 4.8 2 ECU. 0 ECU. 39 14.7
819 27.6 38 0 0 0 3.2 1.4 ECU. 0 ECU. 37 14.78
894 27.6 38 0 0 0 4.2 1.4 ECU. 0 ECU. 38 14.65
873 27.6 38 0 0 0 4.2 1.6 ECU. 0 ECU. 36 14.58
907 27.6 37 0 0 0 3.2 1.4 ECU. 0 ECU. 37 14.49
1975 27.4 169 20 0 0 29.2 6.2 ECU. 0 ECU. 180 14.49
2009 27.4 172 20 0 0 29.2 4.9 ECU. 0 ECU. 169 14.49
2142 27.4 208 22 0 0 29.2 14.1 ECU. 0 ECU. 243 14.42
2287 27.4 282 48 10 0 18.4 10 ECU. 0 ECU. 270 14.58
2440 27.4 309 59 10 0 17.2 11.2 ECU. 0 ECU. 374 14.08
2620 27.4 348 65 10 0 18.4 12.3 ECU. 0 ECU. 323 12.59
2898 27.4 414 75 10 0 18.5 15 ECU. 0 ECU. 468 11.68
3121 27.4 486 84 10 0 18.2 17.3 ECU. 0 ECU. 545 11.49
3360 27.4 553 84 10 0 16.4 20.5 ECU. 0 ECU. 718 11.33
3687 27.4 726 85 10 0 13.7 24.8 ECU. 0 ECU. 612 11.24
3977 27.2 826 85 10 0 10.7 32.4 ECU. -0.1 ECU. 936 11.05
4345 27.2 1106 86 20 0 8.6 44.8 ECU. -1 ECU. 1016 10.56
4734 27 1453 86 30 0 6 58 ECU. -1.3 ECU. 1315 10.05
5151 27.2 1661 93 50 0 6.1 63 ECU. -2.9 ECU. 1582 9.68
5473 27.4 1689 93 70 0 7.2 66.7 ECU. -1 ECU. 1666 9.68
6082 27.2 1773 96 80 0 12.2 69.8 ECU. -2 ECU. 1824 9.83
6459 27.2 1811 97 90 0 15.5 69.6 ECU. -4 ECU. 1760 9.87
6930 27.4 1865 97 100 0 19.4 72 ECU. -4 ECU. 1724 10.02
7002 27.4 576 28 0 0 37.5 22.3 ECU. 0 ECU. 123 10.21
6472 27.4 156 1 0 0 38.5 8.9 ECU. -0.5 ECU. 162 11.49
6016 27.4 524 22 0 0 34.4 21.3 ECU. -1 ECU. 710 13.31
4830 27.4 897 84 10 0 16.8 35.1 ECU. -1 ECU. 980 13.39
5192 27.4 1243 100 10 0 12.1 52.4 ECU. -1 ECU. 1141 11.45
5216 27.2 1344 100 30 0 10 57.8 ECU. -1 ECU. 1302 10.06
5291 27.2 1661 100 50 0 7.2 67.6 ECU. -2.4 ECU. 1677 10.09
5500 27 1706 100 70 0 6.2 69.6 ECU. -1 ECU. 1724 9.9
5777 27.2 1694 100 80 0 10.2 68.9 ECU. -2 ECU. 1760 9.64
6060 27.2 1730 100 90 0 12.3 66.9 ECU. -4 ECU. 1655 9.86
6265 27.2 1805 100 100 0 14.5 68.4 ECU. -4 ECU. 1712 10.11
6497 27.2 1805 100 100 0 16.3 68.6 ECU. -4 ECU. 1689 10.23
6693 27.2 1845 100 100 0 18.3 70.9 ECU. -4 ECU. 1773 10.3
6887 27.4 1838 100 100 0 19.6 71.5 ECU. -4 ECU. 1773 10.36
7168 27.4 1851 87 100 0 21.4 72.7 ECU. -4 ECU. 1760 10.36
6887 27.2 145 1 0 0 38.5 8.5 ECU. 0 ECU. 130 11.08
6337 27.2 187 1 0 0 38.6 9.8 ECU. -1 ECU. 163 12.81
5583 27.2 847 67 10 0 27.4 32.5 ECU. -1 ECU. 862 13.92
5402 27.4 1068 100 10 0 16.1 45.6 ECU. -1 ECU. 1184 12.83
5265 27.4 1396 100 10 0 11.1 59.1 ECU. -1 ECU. 1543 10.96
5428 27.4 1557 100 40 0 8.4 65.9 ECU. -1 ECU. 1515 9.99
5385 27.2 1700 100 60 0 6.7 66 ECU. -3.5 ECU. 1488 9.92
5473 27.2 1683 100 80 0 7.4 67.1 ECU. -2 ECU. 1644 10.04
5611 27.4 1650 100 90 0 9 68.6 ECU. -4 ECU. 1655 9.99
5717 27.4 1730 100 90 0 10.2 69.5 ECU. -4 ECU. 1655 10.01
5797 27.4 1683 100 90 0 9.9 67.1 ECU. -4 ECU. 1677 9.99
5941 27.4 1730 100 90 0 12.3 68.9 ECU. -4 ECU. 1592 10.05
6082 27.4 1760 100 100 0 13.4 69.9 ECU. -4 ECU. 1562 10.15
6184 27.2 1773 100 100 0 14.3 70.3 ECU. -4 ECU. 1689 10.15
6265 27.2 1779 100 100 0 14.4 70.8 ECU. -4 ECU. 1689 10.15
6361 27.4 1805 100 100 0 15.5 71.9 ECU. -4 ECU. 1677 10.15
6459 27.4 1818 100 100 0 16.4 71.2 ECU. -4 ECU. 1655 10.2
6548 27.4 1824 100 100 0 16.3 72.8 ECU. -4 ECU. 1748 10.23
6640 27.4 1805 100 100 0 18.3 72.4 ECU. -4 ECU. 1785 10.2
6720 27.4 1818 100 100 0 18.6 72.1 ECU. -4 ECU. 1760 10.2
6816 27.4 1845 100 100 0 19.6 73.7 ECU. -4 ECU. 1798 10.2
6887 27.2 1851 100 100 0 20.8 73.8 ECU. -4 ECU. 1773 10.17
7017 27.4 1872 100 100 0 21.7 73.8 ECU. -4 ECU. 1760 10.21
7107 27.2 1858 100 100 0 21.5 73.9 ECU. -4 ECU. 1773 10.24
Code:
5428 27.4 1557 100 40 0 8.4 65.9 ECU. -1 ECU. 1515 9.99 5385 27.2 1700 100 60 0 6.7 66 ECU. -3.5 ECU. 1488 9.92 5473 27.2 1683 100 80 0 7.4 67.1 ECU. -2 ECU. 1644 10.04
Ben
I know alot fo people have had trouble tuning the UTEC with a GT35r. Alot of people have had to switch to the the AEM for speed density. It is posible the UTEC is averaging something in your map to get that 3.5. What is in your map at 5-5500 in 40 60 and 80 load points. Or if you don't mide post up you whole map.
Ben
Ben
here is my just started fuel map:
Yea, i see it too. I start in the 100% and work my way in. 18 pounds boost 100 octane. I like good fuel when tuning. A little insurance. Today was just trying to get 11 AFR and ran out of time. I still think my stumble at WOT is more that 1 or 2 % in fuel....
Code:
RPM 0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% RPM 0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 500 0 0 0 0 0 0 0 0 0 0 0 750 0 0 0 0 0 0 0 0 0 0 0 1000 0 0 0 0 0 0 0 0 0 0 0 1250 0 0 0 0 0 0 0 0 0 0 0 1500 0 0 0 0 0 0 0 0 0 0 0 1750 0 0 0 0 0 0 0 0 0 0 0 2000 0 0 0 0 0 0 0 0 0 0 0 2250 0 0 0 0 0 0 0 0 0 0 0 2500 0 0 0 0 0 0 0 0 0 0 0 2750 0 0 0 0 0 0 0 0 0 0 0 3000 0 0 0 0 0 0 0 0 0 0 0 3250 0 0 0 -2 0 0 0 0 0 0 0 3500 0 0 0 -3 -2 0 0 0 0 0 0 3750 0 0 -2 -4 -4 -2 -1 0 0 0 -4 4000 0 0 -2 -4 -4 -4 -1 0 0 0 -4 4250 -1 -1 -1 -3 -4 -4 -2 -1 -1 -4 -4 4500 -1 -1 -1 -2 -4 -4 -3 -2 -1 -4 -4 4750 -1 -1 -1 -1 -2 -4 -4 -2 -1 -4 -4 5000 -1 -1 -1 -1 -1 -3 -4 -2 -2 -4 -4 5250 -1 -1 -1 -1 -1 -3 -4 -2 -2 -4 -4 5500 -1 -1 -1 -1 -1 -2 -3 -1 -2 -4 -4 5750 -1 -1 -1 -1 -1 -1 -3 -1 -2 -4 -4 6000 -1 -1 -1 -1 -1 -1 -3 -1 -2 -4 -4 6250 -1 -1 -1 -1 -1 -1 -2 -1 -2 -4 -4 6500 0 0 0 0 0 0 0 0 -2 -4 -4 6750 0 0 0 0 0 0 0 0 -2 -4 -4 7000 0 0 0 0 0 0 0 0 0 -4 -4 7250 0 0 0 0 0 0 0 0 0 -4 -4 7500 0 0 0 0 0 0 0 0 0 -4 -4 7750 0 0 0 0 0 0 0 0 0 0 -4 8000 0 0 0 0 0 0 0 0 0 0 -4 8250 0 0 0 0 0 0 0 0 0 0 0 8500 0 0 0 0 0 0 0 0 0 0 0 8750 0 0 0 0 0 0 0 0 0 0 0 RPM 0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%
It looks like it was averaging the fuel map from 60% 5250 and one of the 80% -2 Look like it might need a little more smoothing. I would just work on the AFR and then once your map is set up try and smooth it out if it is still happening.
Ben
Ben
Originally Posted by rraulston
you know whats weird Ben, i have no 3.5 in the map!! only 1,2,3 or 4. Where the heck did the 3.5 come from??!!
Yeah your going to have to smooth that map a bit so it doesnt suddenly jump value between cells.. you'll "Clean" up alot of your drivability glitches doing that.. especially if you are "Skipping" load sites due to really fast airflow ramping..
The biggest problem with big turbos and the UTEC, really isn't the UTEC, its the MAF.. the very high airflow rate seems to be troublesome with the stock MAF.. plus you have to deal with the factory ECU's "Learning" of the tip-in throttle which takes some time to adapt. A big turbo is just troublesome for any MAF based solution, you end up with needing to run higher idle to increase vacuum, especially if you have cams.
I definitely recommend doing some research on a blowthrough setup if you have a big turbo since going to a standalone just to get speed density features isn't always the best way to go if you don't want to spend umpteen hours making minor adjustments for drivability.
Personally, when I see the tradeoffs people make when they go with a big turbo, I feel more and more comfortable with my decision to stick with stock-ish turbo setups.
Anyway, it *IS* possible to get everything to work well, it just takes time, the biggest thing that happens is that you tune the car, and feel the drivability is terrible, but we forget that it takes a day or two of driving to get the ECU to relearn the changes and for the drivability to "come back" on a standalone you would be making these adjustments manually.
The biggest problem with big turbos and the UTEC, really isn't the UTEC, its the MAF.. the very high airflow rate seems to be troublesome with the stock MAF.. plus you have to deal with the factory ECU's "Learning" of the tip-in throttle which takes some time to adapt. A big turbo is just troublesome for any MAF based solution, you end up with needing to run higher idle to increase vacuum, especially if you have cams.
I definitely recommend doing some research on a blowthrough setup if you have a big turbo since going to a standalone just to get speed density features isn't always the best way to go if you don't want to spend umpteen hours making minor adjustments for drivability.
Personally, when I see the tradeoffs people make when they go with a big turbo, I feel more and more comfortable with my decision to stick with stock-ish turbo setups.
Anyway, it *IS* possible to get everything to work well, it just takes time, the biggest thing that happens is that you tune the car, and feel the drivability is terrible, but we forget that it takes a day or two of driving to get the ECU to relearn the changes and for the drivability to "come back" on a standalone you would be making these adjustments manually.
Evolving Member
Joined: Feb 2004
Posts: 184
Likes: 0
Ray,
I just returned to work in observation of the Good Ol Reverend Martin Luther King.
Looks like you are having some issues with your fuelling. As well, have you forgotten about my recommendation to use a map sensor for load with larger turbochargers. This will allow you to have a smoother transition through load sites and keep you from getting all pissed off. Also it should be noted that by boss drives the Evo with the GT35r with the maf in the stock position every day and he loves it. Also your max hz for mapping is way too low. 1800hz on a gt35r is nothing. If you bump your max to a higher number you'll have slower transitions through load sites as well.
Good Luck with Tuning Bro.
Thanks,
Jermaine~
P.S. Remember tuning isn't always easy!
I just returned to work in observation of the Good Ol Reverend Martin Luther King.
Looks like you are having some issues with your fuelling. As well, have you forgotten about my recommendation to use a map sensor for load with larger turbochargers. This will allow you to have a smoother transition through load sites and keep you from getting all pissed off. Also it should be noted that by boss drives the Evo with the GT35r with the maf in the stock position every day and he loves it. Also your max hz for mapping is way too low. 1800hz on a gt35r is nothing. If you bump your max to a higher number you'll have slower transitions through load sites as well.
Good Luck with Tuning Bro.
Thanks,
Jermaine~
P.S. Remember tuning isn't always easy!
hey guys, just wanted to report that i just installed my rc 750cc injectors and the car is running a hundred times better. the car is pulling very hard and all the knock is gone. there is still a bit of a stumble when the gas is pressed down quickly. but i think it can be fixed with a good tune. i really want go back down to harman and see if they can help me out with another tune. im going to log a run or two tomorrow. im so happy. late justin