Most recent log of the sbr gt30r @ 23psi.

[8urv8]

All you tuning guru's out there. Take a look at this log and post any feedback that you feel may be helpful. After this log, I added a little fuel where it knocked. This is on 93octane and the temp outside was about 50 degree's. Mods in sig.

 

[GVR4592]

That's one of the better looking logs I've seen in a while. I don't think you really NEED to do anything else. Maybe start playing with more boost/less timing to gain some power, or you could just leave it alone. Is that knock consistent in every pull or was it a one time thing? Why do you have Dynojet wideband selected in the software, when your profile says you have the AEM wideband?

 

[8urv8]

Thanks for the compliment on the log. I couldn't get dsmlink to match what my wideband was reading so I was playing with it I elected the dynojetwb to see what that would do and it was dead on. I guess I could probably rename it. Yeah the knock was pretty consistant there so that's why I added a little fuel in that area. I haven't logged since the fuel was added.

Do my injector duties look a little high? This is with 850cc fic's.

 

[GVR4592]

IDC is a little high, but no too high, you could bump up fuel pressure and compensate with the global setting to get a little more out of it. You could also try pulling some fuel in the area's where it's not knocking and see if that helps, you might pick up some power too.

 

[8urv8]

IDC is a little high, but no too high, you could bump up fuel pressure and compensate with the global setting to get a little more out of it. You could also try pulling some fuel in the area's where it's not knocking and see if that helps, you might pick up some power too.

Pull some fuel where it's knocking? I thought you should add fuel but I have heard of rich knock. I guess that's what you are referring to. Yeah, I'd like to run some more boost but don't want to get too crazy with the idc's. I've got a tune for 26psi but timing peak's at 14 degree's. I figured it be a better to run a little less boost and more timing.

 

[GVR4592]

I said pull fuel where it's NOT knocking. As in the area's where no knock occurs.

 

[8urv8]

OHHHHH, I didn't read that right. I get what you're saying now. Lean it out a little where it's not knocking until it just start's to knock a little and I could potentially gain a few more ponies. Or I guess I could just up the boost until it start's to slightly knock. That would do the same thing but I'd be seeing a little more boost.



Ryan H.

 

[TSIMonsteR]

log looks good. Thats almost not enough knock to worry about. I would add just a little bit of fuel there. Your injectors are topping at 90% duty cycle, so upping the boost much isn't going to be an option. Bumping the fuel pressure would certainly give you a little more wiggle room.

 

[8urv8]

Yes, in the first post I explained how I added a little fuel in this area to combat the small amount of knock. So if I up the fuel pressure, I'll have to lower the global setting's correct? What would you recommend that I raise the fuel pressure to? I was also thinking about rewiring the fuel pump. Would that help any?

 

[Rob10_99]

After about 4400rpm your dropping below 10:1 afr, I see the knock is after it gets down to the lower 9's.
Why not shoot for a 11.2:1 and lean it out a bit?

 

[8urv8]

Dude, you're looking at the a/f line. Look at the dynojet wideband line. That is the actuall in-car reading. It never fall's below 11.0:1. The a/f line is just and estimated of what the ecu thinks the a/f ratio is.

 

[pickens]

I would fix the big difference in you estimated A/F vs your wideband. That tells me something is off in your air metering. If you reading leaner on the wideband, then you either A.) You have a hacked MAS? or B.) Intake leak pre turbo inlet?

 

[8urv8]

Yeah, I had it pretty close at one time, but at 25psi is was loging over 50lb/min and I didin't think that was very accurate. So I should just up the airflow sliders until the estimated a/f is close to the actual wideband reading.

 

[scottsee]

looks good. I like the spool rpm.. I think you should leave it be..

 

[pickens]

I wouldn't touch the sliders until you can track down a root cause for the big difference. The sliders should be used for hacked maf's and/or fine adjustments.

 

[8urv8]

I know the mas is not hacked at all and the only place it could leak is where the bov is routed into the intake and that hose is all intact. Any other possibilities as to what it could be or only the two that you mentioned? Anyone else that has some input is more than welcomed to comment. Is it possible that my bov is leaking where it routes back into the intake?

 

[GVR4592]

The fuel global is set for 780's and the A/F properties are set for 850's, that would account for some of the difference. Are you sure you have 850 injectors?

 

[8urv8]

Yeah, I definately have FIC 850's. I saw that my global was a little high so I lowered it from 42 down to 47 where it should be. I'll do some lowand mid throttle logging and see what my fuel trims look like.