[scottro]

Hi guys,

Did some data logging with the new 11-25 Stg0 map and for a completely stock car on shitty 91 octane AZ gas I must say I'm pretty impressed. Although, it has been getting cold lately here in AZ at night so I'm not sure if it's the 26* C intake temps (versus 32-36* C) or the Stg0 map. Anyways, check out the log. I'm pretty happy with the boost curve (although a little bit more oscillations than I'd like as it gets up into higher RPM's), timing looks great (first time I haven't seen any timing drops), and fuel trim's seem okay as well.

Car felt great! Let me know what you think.

[JamesM3M5]

Isn't that a timing correcting event at 408.06s? Does it happen every pull?

[scottro]

Originally Posted by JamesM3M5

Isn't that a timing correcting event at 408.06s? Does it happen every pull?

Hrm... Yeah I suppose you're right, I usually don't look at the values until boost sets in.

It does seem to do it on all logs, during/after a gear change, and around spool-up.

Does that not seem normal?

[JamesM3M5]

Got throttle position in the logs? How fast are you opening the throttle? Looks similar to the stumble I had on a friend's Xi automatic on sudden throttle opening. Switched from 7-29 maps to 11-1 stage 1 maps. Wasn't plugs, couldn't tune it out with timing retard in the ignition curves, either.

[NiVeDh]

Originally Posted by JamesM3M5

Got throttle position in the logs? How fast are you opening the throttle? Looks similar to the stumble I had on a friend's Xi automatic on sudden throttle opening. Switched from 7-29 maps to 11-1 stage 1 maps. Wasn't plugs, couldn't tune it out with timing retard in the ignition curves, either.

It could just be throttle closure from DTC/DSC intervention.

[scottro]

Yup, throttles attached. I'm not sure what to think of the values.. DTC was disabled.

DBW throttle seems to drop at some points but my throttle pos. was 100%? With DTC disabled, what else would cause those drops?

Also, the point that has the most timing drops doesn't have any throttle drops

[JamesM3M5]

At the time of the event, the RPM slope drops. You've got to feel that. Throttle opens in less than a second then the timing event occurs. Boost is barely 5psi. Do you have CAN actual ignition advance or Knock Retard logged?

[scottro]

Originally Posted by JamesM3M5

At the time of the event, the RPM slope drops. You've got to feel that. Throttle opens in less than a second then the timing event occurs. Boost is barely 5psi. Do you have CAN actual ignition advance or Knock Retard logged?

I do feel it, I sometimes think I feel small misfires here and there. But it doesn't throw any codes so I assume I'm just being too sensitive about misfires

I don't have knock retard, but CAN actual ignition advance is what is in the first log.

[JamesM3M5]

At 409.28s the throttle drop is probably DSC related. You can see the boost drops and then picks up around the throttle event. Has to be some sort of traction control issue. DTC allows some wheelspin, DSC OFF should be a full traction control disable aside from the Procede doing its own traction control functions. Even so, it looks like DSC was closing the throttle to get traction back in line.

[scottro]

Originally Posted by JamesM3M5

At 409.28s the throttle drop is probably DSC related. You can see the boost drops and then picks up around the throttle event. Has to be some sort of traction control issue. DTC allows some wheelspin, DSC OFF should be a full traction control disable aside from the Procede doing its own traction control functions. Even so, it looks like DSC was closing the throttle to get traction back in line.

Sorry, I think I'm saying the right thing. When I disable traction control, I hold the button down for about 2+ seconds to disable both DSC and DTC.

I have the PROcede set at 100% for traction threshold, so you'd think I should just about have it covered for disabling that stuff ....

[JamesM3M5]

Oh, duh. Knock Retard will definitively show that's a knock event. Probably not a misfire. Misfires I can live with, knock retard I cannot. Might want to give the Vishnu guys a call on Monday.

[JamesM3M5]

I thought 100% was full Procede traction control enabled, 0% is no traction control intervention. Or do I have that backwards?

[dbjb]

So I assume this is stage 0 on Map 1. I wonder what would happen with Map 4. That's what I want to know.

[scottro]

Well, AZ isn't known for the best gas so maybe that's grounds for knock?

I think you've got it backwards... It's 100% by default, and I think most people would want it disabled.

[scottro]

Originally Posted by dsbj

So I assume this is stage 0 on Map 1. I wonder what would happen with Map 4. That's what I want to know.

Yes stage 0 on Map 1. I'm not sure what map 4 is but I never run it.

[dbjb]

You shouldn't run it. I'm considering using stage 0 map 4 for road course use. Note, I'm FBO with meth.

Thank you for this informative post though. I was curious what boost target would be.

[335okc]

are you 6AT or 6MT ?

[scottro]

6AT

[OpenFlash]

Hey guys, that's not knock. Log looks perfectly fine.

[cn555ic]

What's is it then? Just ignition correction. But why such a drastic drop?

[OpenFlash]

Originally Posted by cn555ic

What's is it then? Just ignition correction. But why such a drastic drop?

Could be a number of things but definitely not knock. notice how it only lasts 0.2 seconds and recovers immediately. Knock would drop timing in multiples of 3 deg and gradually ramp back up over a much longer period of time. Not to mention that this retard is occurring at ~2psi of boost. Not knock.

[335okc]

could it be a downshift?

shiv, is there a common guideline where to look for knock retard? other than ignition adv drop of 2-3* ? maybe boost has to be reasonably high? has to be under heavy load? WOT ?