KNOCK, KNOCK! Who's there? (No, really)

naSTI-R · 11-14-2006, 07:39 AM

Just putting this out there because my (admittedly quick) search do not yield any info on this...

I'm running ST with my stock VF-39. After looking for what others are tuning regardless of EMS, I came across the UTEC Quick Guide 12_2004 and reached a somewhat alarming statement by PDXTuning:

"One of the very cool things the UTEC can do is detect knock verywell. The stock ECU also detects knock but stops listening for knock at around 5500 rpm.

The UTEC while in control is always listening for knock and will retard the ignition if knock is detected. This is great as it gives you a reliable failsafe all the way to redline. Uncorrected knock will kill your car. If you get knock, let off, don’t try to drive though it. "

After going back and reading the ST manual and searching threads I did not find any data to support or bust this claim regarding the Denso deafining after 5500 rpm.

Now, I only got alarmed because I went back through all my logs from the last 15 maps I've run and not once did I see knock above 5000. This only lead me to think that this may actually be true.

I subscribe to the theory of peak boost already been reached and tapering by 5500, but I'd like to know if there are other dangerous conditions I may not be otherwaise aware of beyond this RPM range.

Honestly, I haven't contact Christian about this, but wanted to get a feel for this and see if anyone else had input. (?)

--Homer

**jsh139** · 11-14-2006, 07:50 AM

Huh? I think they are referring to the early (2002-3?) WRXs. Their knock sensor had some issues. The sensor in our car does a great job from what I've been reading.

WolfPlayer · 11-14-2006, 08:19 AM

The UTEC guide is wrong (with regard to the STI). Here are the stock knock parameter values for the '05 STI. The knock sensor is used up to 6850 rpms.

TheMadScientist · 11-14-2006, 08:21 AM

Looks like it will listen to ~6850. This is from an 04 Sti the 04+ may be different.

TMS

LOLSTi · 11-14-2006, 08:28 AM

What Wolfplayer and TMS said.

WolfPlayer · 11-14-2006, 08:32 AM

I win by 2 minutes! (nana nana na to TMS

)

La Mer · 11-14-2006, 08:33 AM

Quote:

Originally Posted by WolfPlayer

I win by 2 minutes! (nana nana na to TMS

)

hmmm. i thought you were a StreetTuner guy?

LOLSTi · 11-14-2006, 08:34 AM

Quote:

Originally Posted by WolfPlayer

I win by 2 minutes! (nana nana na to TMS

)

You guys both beat me by 5+

naSTI-R · 11-14-2006, 09:33 AM

HAHA!!! You doods r nuts!

Good to know this info. The ST does not contain knock sensor threshold mapping (am I wrong?). But it's def a relief to know I should be good.. I guess since I had not seen knock register at the higher RPMs was the only part that kept me wondering.

Thanks to all for the quick response!!

**jsh139** · 11-14-2006, 09:58 AM

Quote:

Originally Posted by LOLSTi

You guys both beat me by 5+

I beat you all by refuting TXS's statement! Although I had no evidence

TheMadScientist · 11-14-2006, 11:22 AM

This is the 2002 WRX.

TMS

WolfPlayer · 11-14-2006, 02:30 PM

Quote:

Originally Posted by La Mer

hmmm. i thought you were a StreetTuner guy?

I am. However, I am in need of the new StreetTUNER advanced and I have to make due with what I can until I have the functionality that I need. The DIY stuff has a couple nice features. However, they cannot touch the featureset and fuctionality of ST advanced. I totally give props to Cobb and the StreetTUNER software. It is an awesome tool.

t

naSTI-R · 11-14-2006, 04:35 PM

Quote:

Originally Posted by TheMadScientist

This is the 2002 WRX.

TMS

Thanks TMS..

This info agrees with what jsh139 sed. Lad to hear I won't have this issue.

La Mer · 11-14-2006, 05:05 PM

Quote:

Originally Posted by WolfPlayer

I am. However, I am in need of the new StreetTUNER advanced and I have to make due with what I can until I have the functionality that I need. The DIY stuff has a couple nice features. However, they cannot touch the featureset and fuctionality of ST advanced. I totally give props to Cobb and the StreetTUNER software. It is an awesome tool.

t

Thanks Wolf. I was just curious because I am in the market for "Self-tune" software. I knew you were a big proponent of Cobb's StreetTUNER so to see you using Enginuity threw me for a loop.

naSTI-R sorry for my brief hijack.

cnstman · 11-17-2006, 10:27 AM

Quote:

Originally Posted by WolfPlayer

I am. However, I am in need of the new StreetTUNER advanced and I have to make due with what I can until I have the functionality that I need. The DIY stuff has a couple nice features. However, they cannot touch the featureset and fuctionality of ST advanced. I totally give props to Cobb and the StreetTUNER software. It is an awesome tool.

t

any idea when the ST advanced is coming out?

11-14-2006, 07:39 AM	#1
naSTI-R Amateur STI Driver Car: 05 STI Fav Mod: BooooooooST! Location: L-Town, PA Posts: 10 Join Date: Nov 2005 Trader Rating: (0)	KNOCK, KNOCK! Who's there? (No, really) Just putting this out there because my (admittedly quick) search do not yield any info on this... I'm running ST with my stock VF-39. After looking for what others are tuning regardless of EMS, I came across the UTEC Quick Guide 12_2004 and reached a somewhat alarming statement by PDXTuning: "One of the very cool things the UTEC can do is detect knock verywell. The stock ECU also detects knock but stops listening for knock at around 5500 rpm. The UTEC while in control is always listening for knock and will retard the ignition if knock is detected. This is great as it gives you a reliable failsafe all the way to redline. Uncorrected knock will kill your car. If you get knock, let off, don’t try to drive though it. " After going back and reading the ST manual and searching threads I did not find any data to support or bust this claim regarding the Denso deafining after 5500 rpm. Now, I only got alarmed because I went back through all my logs from the last 15 maps I've run and not once did I see knock above 5000. This only lead me to think that this may actually be true. I subscribe to the theory of peak boost already been reached and tapering by 5500, but I'd like to know if there are other dangerous conditions I may not be otherwaise aware of beyond this RPM range. Honestly, I haven't contact Christian about this, but wanted to get a feel for this and see if anyone else had input. (?) --Homer This ad is not endorsed by this member. Please register or login to hide this ad.

11-14-2006, 07:50 AM	#2
jsh139 How YOU Doin? Car: 2006 Audi S4 Fav Mod: OMGHI2U! Location: Philly 'burbs Posts: 7,719 Join Date: Apr 2004 Trader Rating: (8)	Huh? I think they are referring to the early (2002-3?) WRXs. Their knock sensor had some issues. The sensor in our car does a great job from what I've been reading.

11-14-2006, 08:19 AM	#3
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)	The UTEC guide is wrong (with regard to the STI). Here are the stock knock parameter values for the '05 STI. The knock sensor is used up to 6850 rpms.

11-14-2006, 08:21 AM	#4
TheMadScientist Professional STI Racer Posts: 600 Join Date: Apr 2004 Trader Rating: (0)	Looks like it will listen to ~6850. This is from an 04 Sti the 04+ may be different. TMS

11-14-2006, 08:28 AM	#5
LOLSTi S204 Racer Car: RIP 02 WRX Fav Mod: 2004 Aspen White WRX STi Location: Cincinnati Posts: 3,621 Join Date: Dec 2005 Trader Rating: (1)	What Wolfplayer and TMS said.

11-14-2006, 08:32 AM	#6
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)	I win by 2 minutes! (nana nana na to TMS )

11-14-2006, 09:33 AM	#9
naSTI-R Amateur STI Driver Car: 05 STI Fav Mod: BooooooooST! Location: L-Town, PA Posts: 10 Join Date: Nov 2005 Trader Rating: (0)	HAHA!!! You doods r nuts! Good to know this info. The ST does not contain knock sensor threshold mapping (am I wrong?). But it's def a relief to know I should be good.. I guess since I had not seen knock register at the higher RPMs was the only part that kept me wondering. Thanks to all for the quick response!!

11-14-2006, 11:22 AM	#11
TheMadScientist Professional STI Racer Posts: 600 Join Date: Apr 2004 Trader Rating: (0)	This is the 2002 WRX. TMS