ECU timing = ?? - Page 3

TheMadScientist · 09-21-2006, 10:58 AM

I have tried tuning both ways, more fuel+timing, and less fuel+timing.
Personally i like the less than method. But my personal limit on EGT's is a bit skewed from the "norm".
My absolute favorite is A LOT less fuel and timing in between the other two methods. *cough*WI*cough*.

TMS

TheMadScientist · 09-21-2006, 11:19 AM

http://www.enginuity.org/viewtopic.php?t=686

Mikie liks the less fuel les timing it looks like too.

TMS

WolfPlayer · 09-21-2006, 12:17 PM

Damnit. You guys are gonna make me blow my stuff up

RiftsWRX · 09-21-2006, 12:28 PM

Quote:

Originally Posted by WolfPlayer

Damnit. You guys are gonna make me blow my stuff up

Heh, I think I've dumped over 70 grand at this point... all in the name of "science".

Jorge (RiftsWRX)
www.ProjectWRX.com

crystal_Imprezav · 09-21-2006, 02:34 PM

Quote:

Originally Posted by TheMadScientist

I have tried tuning both ways, more fuel+timing, and less fuel+timing.
Personally i like the less than method. But my personal limit on EGT's is a bit skewed from the "norm".
My absolute favorite is A LOT less fuel and timing in between the other two methods. *cough*WI*cough*.

TMS

Haha I like where your heads at. My issue is that you can only pull so much fuel from the stock ecu (14.7:1) therefore I have resorted to a ~11.2:1 ratio and moderate timing up top and only about a 10.8~9:1 (with a 14.70 listed) at around 3-3.5k. I mean I could turn the injection down but its already set at 7~8psi start and 18psi max running about 21psi. Im tuning AVCS to try and lean it out some more but can't get it much leaner. Also have you noticed that your LTFT go crazy now, I guess its expected with WI though. P.S. I am another one to vote Wolf gets WI *couch again*

TheMadScientist · 09-21-2006, 02:41 PM

Quote:

Originally Posted by crystal_Imprezav

Haha I like where your heads at. My issue is that you can only pull so much fuel from the stock ecu (14.7:1) therefore I have resorted to a ~11.2:1 ratio and moderate timing up top and only about a 10.8~9:1 (with a 14.70 listed) at around 3-3.5k. I mean I could turn the injection down but its already set at 7~8psi start and 18psi max running about 21psi. Im tuning AVCS to try and lean it out some more but can't get it much leaner. Also have you noticed that your LTFT go crazy now, I guess its expected with WI though. P.S. I am another one to vote Wolf gets WI *couch again*

I have a 16.5:1 cruise map.

TMS

crystal_Imprezav · 09-21-2006, 04:32 PM

Quote:

Originally Posted by TheMadScientist

I have a 16.5:1 cruise map.

TMS

Haha, ur running UTEC as well arent you?

WolfPlayer · 09-22-2006, 03:33 AM

Back to the original topic.

I changed my DA maps from 10d to 8d and then finally to 6d (with the required changes in the primary ignition map). End result = no change. Still 15.5d at 5800rpms. Oh wells.

I did get my knocklite installed last night. We'll see what that has to say.

t

crystal_Imprezav · 09-22-2006, 05:38 AM

Hmmm, the STi ecu is so damn complicated. Ill be interested in how the knocklite is reacting.

daemon · 09-22-2006, 12:53 PM

Quote:

Originally Posted by WolfPlayer

Damnit. You guys are gonna make me blow my stuff up

I'll blow mine up first if you like.

I'm going to start leaning up a bit and see what happens. I've already got myself convinced I'll blow the motor sooner or later anyway.

ZuMBLe · 09-26-2006, 10:22 PM

After finally fully retuning my intake and injectors my car no longer takes full DA either. I have the AFRs close to where they were before in the 11.1 range (my fuel map actually reads close to what comes out of the exhaust now!!! WOO).. The "problem" is I'm down to 13 degrees around 3000 rpm and only going up to 14.5 up around 5500 rpm. Only other thing that has changed is I installed a turbo inlet hose. I'm running the stock airbox again.

When Jorge first tuned my car it would take all 9 degrees of DA when at WOT. I played with the ignition maps a bit and always still got 9s until the injector install and turbo inlet went in.

I'm willing to try this leaning out thing.. =) 12.1? Maybe not yet. I may go for 11.7 though. Interesting thread.

The knocklite set at 3 and 4 sensitivity pretty much 95% matches up with the logs. I would get a flicker and I would see a drop in DA in the logs. I'm still confused as to if the lower DA means actual knock or was it knock prevention.

RiftsWRX · 09-27-2006, 07:25 AM

Quote:

Originally Posted by ZuMBLe

After finally fully retuning my intake and injectors my car no longer takes full DA either. I have the AFRs close to where they were before in the 11.1 range (my fuel map actually reads close to what comes out of the exhaust now!!! WOO).. The "problem" is I'm down to 13 degrees around 3000 rpm and only going up to 14.5 up around 5500 rpm. Only other thing that has changed is I installed a turbo inlet hose. I'm running the stock airbox again.

When Jorge first tuned my car it would take all 9 degrees of DA when at WOT. I played with the ignition maps a bit and always still got 9s until the injector install and turbo inlet went in.

I'm willing to try this leaning out thing.. =) 12.1? Maybe not yet. I may go for 11.7 though. Interesting thread.

The knocklite set at 3 and 4 sensitivity pretty much 95% matches up with the logs. I would get a flicker and I would see a drop in DA in the logs. I'm still confused as to if the lower DA means actual knock or was it knock prevention.

Ray: It means it actually heard something it preceived as either detonation, or a harmonic that it inferrered as the onset of detonation.

One thing is for certain. At WOT, any negative value IS detonation.

ZuMBLe · 09-27-2006, 07:37 AM

Negative value meaning if the DA goes to a value < 0 or in my case where the DA called for a max of 9 degrees and it usually takes 9 but only wants to take 7 now. I never saw a value < 0 during my testing. I've run your map through summer and winter and never had a issue with the car not taking full DA. Even after I played with the ignition map it never had a probablem taking full DA until now.

Quote:

Originally Posted by RiftsWRX

Ray: It means it actually heard something it preceived as either detonation, or a harmonic that it inferrered as the onset of detonation.

One thing is for certain. At WOT, any negative value IS detonation.

RiftsWRX · 09-27-2006, 07:43 AM

On a side note... I really like this thread.... It reminds me of the times when I actually had tons of time to post on NASIOC, and really got into the technical nitty gritty on stuff.

ZuMBLe · 09-27-2006, 07:47 AM

I remember you had a thread on Nasioc about low timing, bad gas and AFRs. I think it was actually a AFR thread.

Mysteries of ECU tuning.

Quote:

Originally Posted by RiftsWRX

On a side note... I really like this thread.... It reminds me of the times when I actually had tons of time to post on NASIOC, and really got into the technical nitty gritty on stuff.

09-21-2006, 10:58 AM	#31
TheMadScientist Professional STI Racer Posts: 600 Join Date: Apr 2004 Trader Rating: (0)	I have tried tuning both ways, more fuel+timing, and less fuel+timing. Personally i like the less than method. But my personal limit on EGT's is a bit skewed from the "norm". My absolute favorite is A LOT less fuel and timing in between the other two methods. coughWIcough. TMS This ad is not endorsed by this member. Please register or login to hide this ad.

09-21-2006, 11:19 AM	#32
TheMadScientist Professional STI Racer Posts: 600 Join Date: Apr 2004 Trader Rating: (0)	http://www.enginuity.org/viewtopic.php?t=686 Mikie liks the less fuel les timing it looks like too. TMS

09-21-2006, 12:17 PM	#33
WolfPlayer Moderator & ECU Tech Car: 05 CGM STI Fav Mod: mo boostaz Location: Fredneck, MD Posts: 3,698 Join Date: Jun 2004 Trader Rating: (6)	Damnit. You guys are gonna make me blow my stuff up

09-22-2006, 03:33 AM	#38
WolfPlayer Moderator & ECU Tech Car: 05 CGM STI Fav Mod: mo boostaz Location: Fredneck, MD Posts: 3,698 Join Date: Jun 2004 Trader Rating: (6)	Back to the original topic. I changed my DA maps from 10d to 8d and then finally to 6d (with the required changes in the primary ignition map). End result = no change. Still 15.5d at 5800rpms. Oh wells. I did get my knocklite installed last night. We'll see what that has to say. t

09-22-2006, 05:38 AM	#39
crystal_Imprezav Spec C Club Car: Slow 05 STi Fav Mod: Loping Idle Location: Chewy's Garage Posts: 1,873 Join Date: Mar 2005 Trader Rating: (11)	Hmmm, the STi ecu is so damn complicated. Ill be interested in how the knocklite is reacting.

09-26-2006, 10:22 PM	#41
ZuMBLe Senior STI Driver Car: 05 CGM FXT Location: NY Posts: 323 Join Date: Feb 2006 Trader Rating: (2)	After finally fully retuning my intake and injectors my car no longer takes full DA either. I have the AFRs close to where they were before in the 11.1 range (my fuel map actually reads close to what comes out of the exhaust now!!! WOO).. The "problem" is I'm down to 13 degrees around 3000 rpm and only going up to 14.5 up around 5500 rpm. Only other thing that has changed is I installed a turbo inlet hose. I'm running the stock airbox again. When Jorge first tuned my car it would take all 9 degrees of DA when at WOT. I played with the ignition maps a bit and always still got 9s until the injector install and turbo inlet went in. I'm willing to try this leaning out thing.. =) 12.1? Maybe not yet. I may go for 11.7 though. Interesting thread. The knocklite set at 3 and 4 sensitivity pretty much 95% matches up with the logs. I would get a flicker and I would see a drop in DA in the logs. I'm still confused as to if the lower DA means actual knock or was it knock prevention.

09-27-2006, 07:43 AM	#44
RiftsWRX STI Driver Car: '02 WRX/'07 FIT Location: Glendale Heights, IL Posts: 268 Join Date: Mar 2004 Trader Rating: (0)	On a side note... I really like this thread.... It reminds me of the times when I actually had tons of time to post on NASIOC, and really got into the technical nitty gritty on stuff.