My first datalog

[crensinivon]

I wish I could post this in the correct forum but I want to see what you guys think. I'm getting 6-7 counts of knock. I don't think this is the way its supposed to be. I appear to be running out of fuel at high RPMs.

This is a 3rd gear to 4th gear pull. At least until I saw the cop.
Running 15psi boost. I think I am going to turn it back down to 14 because of the fuel until I can get a bigger pump and injectors.


TIME TIMA O2-R TPS RPM KNCK INJP ---
07/31/2008 19:48:49 28° 0.78V 19.6% 2531 0 3.33ms 9
07/31/2008 19:48:50 33° 0.82V 26.3% 2563 0 4.86ms 13
07/31/2008 19:48:50 30° 0.37V 30.6% 2594 0 5.89ms 16
07/31/2008 19:48:50 27° 0.62V 31.8% 2656 0 6.14ms 17
07/31/2008 19:48:50 26° 0.76V 41.6% 2688 0 6.91ms 19
07/31/2008 19:48:50 24° 0.74V 44.7% 2719 0 7.17ms 20
07/31/2008 19:48:51 23° 0.68V 61.6% 2750 0 8.70ms 25
07/31/2008 19:48:51 22° 0.82V 78.0% 2813 0 9.22ms 27
07/31/2008 19:48:51 21° 0.84V 100.0% 2844 0 9.98ms 30
07/31/2008 19:48:51 21° 0.84V 100.0% 2906 0 11.01ms 34
07/31/2008 19:48:52 19° 0.84V 100.0% 2969 0 12.03ms 38
07/31/2008 19:48:52 19° 0.84V 100.0% 3031 0 13.06ms 42
07/31/2008 19:48:52 17° 0.84V 100.0% 3094 0 13.82ms 45
07/31/2008 19:48:52 16° 0.84V 100.0% 3125 0 14.85ms 49
07/31/2008 19:48:52 16° 0.84V 100.0% 3281 0 15.87ms 55
07/31/2008 19:48:53 16° 0.84V 100.0% 3281 0 17.15ms 60
07/31/2008 19:48:53 16° 0.84V 100.0% 3406 0 17.15ms 62
07/31/2008 19:48:53 17° 0.84V 100.0% 3469 0 17.41ms 64
07/31/2008 19:48:53 17° 0.84V 100.0% 3563 0 17.66ms 67
07/31/2008 19:48:53 17° 0.84V 100.0% 3656 0 17.66ms 69
07/31/2008 19:48:54 17° 0.84V 100.0% 3719 0 17.66ms 70
07/31/2008 19:48:54 18° 0.84V 100.0% 3844 1 18.18ms 74
07/31/2008 19:48:54 18° 0.84V 100.0% 3938 0 18.43ms 77
07/31/2008 19:48:54 18° 0.82V 100.0% 3969 0 18.69ms 79
07/31/2008 19:48:54 18° 0.84V 100.0% 4063 0 18.43ms 80
07/31/2008 19:48:55 18° 0.82V 100.0% 4281 0 18.43ms 84
07/31/2008 19:48:55 19° 0.84V 100.0% 4281 0 18.43ms 84
07/31/2008 19:48:55 19° 0.84V 100.0% 4375 0 18.69ms 87
07/31/2008 19:48:55 19° 0.82V 100.0% 4469 0 19.20ms 91
07/31/2008 19:48:55 19° 0.82V 100.0% 4594 0 19.46ms 95
07/31/2008 19:48:55 19° 0.82V 100.0% 4563 0 19.97ms 97
07/31/2008 19:48:56 19° 0.82V 100.0% 4688 0 20.22ms 101
07/31/2008 19:48:56 19° 0.82V 100.0% 4781 0 20.22ms 103
07/31/2008 19:48:56 18° 0.82V 100.0% 4875 0 20.22ms 105
07/31/2008 19:48:56 18° 0.82V 100.0% 4875 0 20.48ms 106
07/31/2008 19:48:56 18° 0.82V 100.0% 4875 0 20.48ms 106
07/31/2008 19:48:56 18° 0.82V 100.0% 5000 0 20.48ms 109
07/31/2008 19:48:57 19° 0.82V 100.0% 5219 0 20.48ms 114
07/31/2008 19:48:57 18° 0.82V 100.0% 5250 0 20.48ms 114
07/31/2008 19:48:57 20° 0.82V 100.0% 5250 0 20.48ms 114
07/31/2008 19:48:57 20° 0.80V 100.0% 5406 0 20.48ms 118
07/31/2008 19:48:57 20° 0.80V 100.0% 5375 0 20.48ms 117
07/31/2008 19:48:57 20° 0.80V 100.0% 5375 0 20.74ms 119
07/31/2008 19:48:58 21° 0.80V 100.0% 5563 0 20.48ms 121
07/31/2008 19:48:58 21° 0.80V 100.0% 5688 0 19.97ms 121
07/31/2008 19:48:58 21° 0.80V 100.0% 5719 0 19.71ms 120
07/31/2008 19:48:58 21° 0.80V 100.0% 5781 0 19.46ms 120
07/31/2008 19:48:58 22° 0.80V 100.0% 5844 0 19.20ms 119
07/31/2008 19:48:59 22° 0.80V 100.0% 5875 0 19.20ms 120
07/31/2008 19:48:59 22° 0.80V 100.0% 5969 0 18.69ms 119
07/31/2008 19:48:59 22° 0.80V 100.0% 5938 0 18.43ms 116
07/31/2008 19:48:59 22° 0.80V 100.0% 6094 2 18.18ms 118
07/31/2008 19:48:59 21° 0.80V 98.4% 6188 1 17.92ms 118
07/31/2008 19:48:59 21° 0.80V 94.1% 6281 1 18.43ms 123
07/31/2008 19:49:00 21° 0.80V 91.8% 6281 1 17.92ms 120
07/31/2008 19:49:00 21° 0.80V 91.8% 6406 1 17.66ms 120
07/31/2008 19:49:00 20° 0.80V 91.8% 6344 0 17.66ms 119
07/31/2008 19:49:00 20° 0.78V 91.4% 6531 0 17.41ms 121
07/31/2008 19:49:00 20° 0.78V 91.4% 6406 0 17.41ms 119
07/31/2008 19:49:00 18° 0.78V 91.0% 6406 0 17.41ms 119
07/31/2008 19:49:01 18° 0.78V 89.4% 6531 0 17.41ms 121
07/31/2008 19:49:01 18° 0.78V 87.8% 6750 0 13.31ms 96
07/31/2008 19:49:01 20° 0.76V 87.5% 6750 7 11.26ms 81
07/31/2008 19:49:01 23° 0.47V 87.5% 6719 6 14.59ms 104
07/31/2008 19:49:01 18° 0.72V 27.8% 6625 6 2.05ms 14
07/31/2008 19:49:02 37° 0.80V 9.4% 6250 0 1.28ms 8
07/31/2008 19:49:02 45° 0.72V 9.4% 5906 0 1.28ms 8
07/31/2008 19:49:02 45° 0.78V 94.9% 5031 0 10.75ms 57
07/31/2008 19:49:02 26° 0.84V 100.0% 5000 0 14.59ms 77
07/31/2008 19:49:02 20° 0.84V 100.0% 5063 0 19.46ms 105
07/31/2008 19:49:02 18° 0.82V 100.0% 5125 0 21.50ms 117
07/31/2008 19:49:03 19° 0.80V 100.0% 5094 0 20.99ms 114
07/31/2008 19:49:03 19° 0.80V 100.0% 5219 0 20.48ms 114
07/31/2008 19:49:03 20° 0.80V 100.0% 5281 0 19.71ms 111
07/31/2008 19:49:03 19° 0.80V 100.0% 5250 0 19.71ms 110
07/31/2008 19:49:03 19° 0.80V 100.0% 5313 0 19.71ms 111
07/31/2008 19:49:04 20° 0.80V 100.0% 5313 0 19.71ms 111
07/31/2008 19:49:04 20° 0.80V 100.0% 5375 0 19.71ms 113
07/31/2008 19:49:04 20° 0.80V 100.0% 5313 0 19.71ms 111
07/31/2008 19:49:04 20° 0.80V 100.0% 5469 0 19.97ms 116
07/31/2008 19:49:04 20° 0.80V 100.0% 5406 0 19.97ms 115
07/31/2008 19:49:04 21° 0.80V 100.0% 5438 0 19.97ms 116
07/31/2008 19:49:05 21° 0.80V 100.0% 5500 0 19.97ms 117
07/31/2008 19:49:05 21° 0.80V 100.0% 5531 0 19.71ms 116

 

[JayRolla]

It almost looks like your knocking when your released the gas since its at the very top and the rpms barely start to drop and if you look at the TPS it drops from 100% to 80% when the knock kicks in so you actually let off the gas when you saw that knock. I think the log looks pretty good actually.

 

[crensinivon]

I thought the same thing when I saw it on the logger. When I looked at it on excel though it appeared to be a little different. So 6 to 7 counts of knock on the shift is acceptable? I do have the egr delete and was thinking that the unburned excess fuel was the culprit.

 

[JayRolla]

What happens is the ecu richens up the afr when you release the gas and it sometimes will cause rich knock. Most likely its not even real knock. You cant really tune it out and lowering the boost wont affect it.

 

[crensinivon]

Sounds good appreciate the input, and the quick lesson.

 

[snowborder714]

One thing I would watch is your front O2 sensor. The voltage is lower than it should be, which is mid to high .90's. I'm not sure what voltages mean what, but it's something to keep an eye on.

 

[crensinivon]

Doing a little research it looks like the O2 value is a little lean. I have a couple of extras laying around I'll throw one in and see if it alleviates the problem. Might be an O2 sensor on its way out the door. I've read if they get a little hot they tend to lose there functionality.

 

[2gGSX]

1g front O2 values have never behaved like 2g front O2 values. Do not pay attention to it for WOT tuning.

 

[crensinivon]

But I really don't want to run lean, lean causes heat. With no knock though it can't be too bad. My manifold doesn't ever glow cherry red, but of course I haven't starting autocrossing yet. Have some more upgrades to do first. Appreciate all the input guys. I'm going to pull a couple more logs tomorrow night, so I'll see what they tell me as well.

 

[crensinivon]

So I went out and got a new o2 sensor, wow I hate the location on the 2g o2 housing I liked the 1g spot sooooo much better. I'm getting a .04 higher reading now? Anyone with any thoughts on what a good 1g 02 reading should be?

 

[2gGSX]

But I really don't want to run lean, lean causes heat. With no knock though it can't be too bad. My manifold doesn't ever glow cherry red, but of course I haven't starting autocrossing yet. Have some more upgrades to do first. Appreciate all the input guys. I'm going to pull a couple more logs tomorrow night, so I'll see what they tell me as well.

It really depends on where you're measuring the production of heat at. Running leaner will create more heat within the combustion chamber itself, but it has little to nothing to do with your manifold glowing red. This post http://www.dsmtuners.com/forums/tun...4-lean-afrs-increase-spool.html#post151566351 actually explains very clearly why running rich would create heat at the point where you're referencing.

So I went out and got a new o2 sensor, wow I hate the location on the 2g o2 housing I liked the 1g spot sooooo much better. I'm getting a .04 higher reading now? Anyone with any thoughts on what a good 1g 02 reading should be?

Your previous sensor looked like it was reading fine. If you are this worried about it, you should return that O2 sensor and save the money for a wideband O2 instead.

Furthermore, the stock fuel map puts you around 9.5:1 assuming your car is mechanically sound. Most common issues will actually make you more rich vs. lean, so again, you don't have anything to worry about.

 

[JayRolla]

If you really want to know, invest in a wbo2. The aem unit is pretty cheap and works real well. I do not even look at the o2 value because it is very inaccurate. I think it should be between .90-.92 anything lower is lean.

The stock ecu afr is around 9.5:1 which is very rich. Most likely you are still rich because your not running to much boost yet. In my opinion the next upgrade you get is a wbo2, and looking at you mod list I would say an engine management system would be the way to go. If you can save up for dsmlink. If you had these two things, tuning and modding from then on would go a lot smoother and safer.

 

[crensinivon]

So eprom ecu and dsmlink I'm looking at about a grand or more if I get a maft and wideband I'm looking at about the same, I think getting started I'll choose the second two.

Right now I'm looking at putting down close to 400hp at the crank nothing too drastic. 6-8 years from now when I'm on my second to third TSI as I don't think I will ever own a clipse I will start looking into DSM-link. I'm keeping my goals realistic as the 1gs are becoming more scarce, I'm just looking doing my research.

2011 starts my autocross life at the age of 31. I'm not looking to make a career of it I'm doing because it's my passion. I love my car and right now its my DD. I have a truck as my backup. So, if this build last me 60k I'm happy. I just don't want my engine to go out at 4k.

My next upgrade is a 2nd stage transmission because I need to be able to shift into second consecutively and grinding is not an option.

I'm happy with the torque and hp that my car is putting down now. I'm guessing that at 15 psi and balance shafts removed I'm above the 250 mark. BTW I also eat 1.8T volkswagons pushing the 260 mark so I'm not disappointed. I just want you guys to know where I stand.

When I'm ready to really start building I have a second 6-bolt block and spare head and that will be my 2.3 stroker with a gt35 running 1600 cc injectors and DSM-link on a rear wheel drive setup, and be a weekend warrior.

So for now as long as I'm not causing too much harm to my motor I'm hapy.

 

[JayRolla]

So eprom ecu and dsmlink I'm looking at about a grand or more if I get a maft and wideband I'm looking at about the same, I think getting started I'll choose the second two.

Right now I'm looking at putting down close to 400hp at the crank nothing too drastic. 6-8 years from now when I'm on my second to third TSI as I don't think I will ever own a clipse I will start looking into DSM-link. I'm keeping my goals realistic as the 1gs are becoming more scarce, I'm just looking doing my research.

2011 starts my autocross life at the age of 31. I'm not looking to make a career of it I'm doing because it's my passion. I love my car and right now its my DD. I have a truck as my backup. So, if this build last me 60k I'm happy. I just don't want my engine to go out at 4k.

My next upgrade is a 2nd stage transmission because I need to be able to shift into second consecutively and grinding is not an option.

I'm happy with the torque and hp that my car is putting down now. I'm guessing that at 15 psi and balance shafts removed I'm above the 250 mark. BTW I also eat 1.8T volkswagons pushing the 260 mark so I'm not disappointed. I just want you guys to know where I stand.

When I'm ready to really start building I have a second 6-bolt block and spare head and that will be my 2.3 stroker with a gt35 running 1600 cc injectors and DSM-link on a rear wheel drive setup, and be a weekend warrior.

So for now as long as I'm not causing too much harm to my motor I'm hapy.

Sounds like a plan. Im running a maf-t with an safc and making near 400whp and really wish I just went straight to dsmlink. Tuning is working out but its just not as efficient as I would like it. I am running 1200cc injectors so thats some of the issue.

Look at www.jackstransmissions.com. Ive known the guy for years and he does incredible work, I know guys running his trannys and I have his second stage tranny in my car. You get more for your money than you would at the "other" dsm tranny shops.

 

[crensinivon]

Yeah but at this point I want the GM 3.5" maf, and I'm trying to do a budget build. Soon though DSMlink is on the parts wishlist. Definitely a shep trans no question.

 

[snowborder714]

Any reason you want the 3.5" MAF over the normal 3"? You would have to be flowing some serious air to need the 3.5". Plus, you'd either need some really big reducers to go down to a normal 2.5" intercooler piping, or would need to run 3" piping in which you'd have to change a lot more.

 

[crensinivon]

Yeah I know I guess I could start with the 3" but I planned on keeping it for a long time MAFs don't tend to go bad for years.