Besides detonation, what other factors are invloved with the ECU 'pulling' timing?

flatthump · 02-28-2007, 09:43 AM

Just like it says. I would love to know..

crystal_Imprezav · 02-28-2007, 10:24 AM

Misfire from running too rich. Fine learning based on altitude and environmental conditions. Temperature of air and coolant. To name a few.

flatthump · 02-28-2007, 10:34 AM

Lol..I know i've talked to you about this..coolant doesnt reach over 183 ever. IAT never reaches above 55*(its been about 50 degrees out) Im at sea level always.

And no I still haven taken care of this USB thing with PLX, so I havent logged my AFR's. But through the stock sensors, it says im running 11.14 afr's.

Thanks crystal.

La Mer · 02-28-2007, 10:37 AM

Quote:

Originally Posted by flatthump

And no I still haven taken care of this USB thing with PLX, so I havent logged my AFR's. But through the stock sensors, it says im running 11.14 afr's.

Thanks crystal.

Isn't that as low as the 'stock sensors' read?

flatthump · 02-28-2007, 10:38 AM

Quote:

Originally Posted by La Mer

Isn't that as low as the 'stock sensors' read?

Honestly...that would be a relief..

STLSTI · 02-28-2007, 10:53 AM

What about something loose in the engine bay. Like heatshields. turbo, up pipe, header.

flatthump · 02-28-2007, 11:00 AM

Quote:

Originally Posted by STLSTI

What about something loose in the engine bay. Like heatshields. turbo, up pipe, header.

I dont have that up pipe rattle that everybody complains about..I do have cusco mounts which could potentially transmit road noise/energy to the engine...I dunno about that theory..I dont know how sensitive the stock knock sensor is.

The only thing I found was a power steering bracket that rubbed against the rack mount...but I fixed that and there is still a problem.

I realize this is hard to diagnose without a data log. I have to trade my PLX wideband for the USB version...that will be coming soon.

Thanks,
Steve

Ps. keep the comments coming.

lackskill · 02-28-2007, 11:11 AM

Im probably outta my league here, but how do you know that its pulling timing without a datalog? And if you did a datalog why didnt you log the stock knock sensor? Or did you log it and get no knock activity but still pulled timing?

STLSTI · 02-28-2007, 11:12 AM

So were's your car pulling timing?. Low RPM or High RPM

flatthump · 02-28-2007, 11:13 AM

Quote:

Originally Posted by lackskill

Im probably outta my league here, but how do you know that its pulling timing without a datalog? And if you did a datalog why didnt you log the stock knock sensor? Or did you log it and get no knock activity but still pulled timing?

I have confirmed this problem over about 100 datalogs.

What I mean is...I have never logged(within streetTUNER) my AFR's through my PLX wideband because it isnt the USB version.

flatthump · 02-28-2007, 11:15 AM

Quote:

Originally Posted by STLSTI

So were's your car pulling timing?. Low RPM or High RPM

At about 5000rpm every single time..Actually...I think I have a few logs on this laptop that can confirm the problem.

I have to see if I brought my HASP key though...

STLSTI · 02-28-2007, 11:24 AM

Quote:

Originally Posted by flatthump

At about 5000rpm every single time..Actually...I think I have a few logs on this laptop that can confirm the problem.

I have to see if I brought my HASP key though...

Funny you say that because I am having the same problem with my car. I tune my timing and everything runs great and looks great ,next day same tune and gas and the car pulls 2d from the KC. Right now my timing is really low and the car seems to be runing OK.

flatthump · 02-28-2007, 11:33 AM

Quote:

Originally Posted by STLSTI

Funny you say that because I am having the same problem with my car. I tune my timing and everything runs great and looks great ,next day same tune and gas and the car pulls 2d from the KC. Right now my timing is really low and the car seems to be runing OK.

From the knock correction table?

If you have negative values in the 1.9 load column, does that also correspond to the all loads above 1.9?

STLSTI · 02-28-2007, 11:37 AM

Sorry I meant to say Dynamic Advance. not KC

flatthump · 02-28-2007, 11:40 AM

Yeah...thats where mine is pulling it from...

02-28-2007, 09:43 AM	#1
flatthump Enginerd Car: The Spaze Mobile Fav Mod: Tuning Location: South O.C., Ca Posts: 13,020 Join Date: Jan 2006 Trader Rating: (5)	Besides detonation, what other factors are invloved with the ECU 'pulling' timing? Just like it says. I would love to know.. This ad is not endorsed by this member. Please register or login to hide this ad. Last edited by flatthump : 03-01-2007 at 05:25 PM. Reason: english

02-28-2007, 11:40 AM	#15
flatthump Enginerd Car: The Spaze Mobile Fav Mod: Tuning Location: South O.C., Ca Posts: 13,020 Join Date: Jan 2006 Trader Rating: (5)	Yeah...thats where mine is pulling it from... This ad is not endorsed by this member. Please register or login to hide this ad.

02-28-2007, 10:24 AM	#2
crystal_Imprezav Spec C Club Car: Slow 05 STi Fav Mod: Loping Idle Location: Chewy's Garage Posts: 1,881 Join Date: Mar 2005 Trader Rating: (12)	Misfire from running too rich. Fine learning based on altitude and environmental conditions. Temperature of air and coolant. To name a few.

02-28-2007, 10:34 AM	#3
flatthump Enginerd Car: The Spaze Mobile Fav Mod: Tuning Location: South O.C., Ca Posts: 13,020 Join Date: Jan 2006 Trader Rating: (5)	Lol..I know i've talked to you about this..coolant doesnt reach over 183 ever. IAT never reaches above 55*(its been about 50 degrees out) Im at sea level always. And no I still haven taken care of this USB thing with PLX, so I havent logged my AFR's. But through the stock sensors, it says im running 11.14 afr's. Thanks crystal.

02-28-2007, 10:53 AM	#6
STLSTI Professional STI Driver Car: 07 335 Fav Mod: NOISE Location: Parkland FL Posts: 431 Join Date: Aug 2004 Trader Rating: (4)	What about something loose in the engine bay. Like heatshields. turbo, up pipe, header.

02-28-2007, 11:11 AM	#8
lackskill Moderator Car: 05 Ram 3500 CTD Fav Mod: Majin Posts: 14,621 Join Date: Apr 2006 Trader Rating: (9)	Im probably outta my league here, but how do you know that its pulling timing without a datalog? And if you did a datalog why didnt you log the stock knock sensor? Or did you log it and get no knock activity but still pulled timing?

02-28-2007, 11:12 AM	#9
STLSTI Professional STI Driver Car: 07 335 Fav Mod: NOISE Location: Parkland FL Posts: 431 Join Date: Aug 2004 Trader Rating: (4)	So were's your car pulling timing?. Low RPM or High RPM

02-28-2007, 11:37 AM	#14
STLSTI Professional STI Driver Car: 07 335 Fav Mod: NOISE Location: Parkland FL Posts: 431 Join Date: Aug 2004 Trader Rating: (4)	Sorry I meant to say Dynamic Advance. not KC