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Old 08-19-2003, 10:47 PM   #1
Scooby Specialist
Member#: 9237
Join Date: Aug 2001
Location: Youngstown, Ohio
2008 Saab Turbo X
400+ lbft

Default Mysterious 2004 UTEC knock FIXED!

Well well well, as im sure you are all tired of hearing me ranting and raving about the knock i was getting with my 04 WRX, well, It seems to have been fixed!!

and completely by accident, haha

how did i fix it?

Grounding mod.... amazing, would have never thought this would fix my problem, but it seems it has, when nothing else fixed it, i just put the knoc out of my mind and drove the car careful, until i could figure out what to do... well, i was looking at potential upcoming mods and saw the grounding mod, i figure what the hell, im gonna do it, so i go to my friends dad's car audio place and pick up some 8ga, 4ga wire, ring ends, and a distributor...

I finish the mod, with a total of $26.50 invested, and go take it for a drive... push it hard, just laughing about the idea that this minght finx my knock... Well, sure enough, i noticed the mod, acceleration was alot smoother than before, with no stuttering at all (remember this, kinda like the movie speed and the gold watch), well, i start to wonder what happened to my knock, it hasnt happened once, so i go do a few freeway pulls, sure enough, its completely gone!!

which brings me back to the stuttering, everytime i would knock in the past, it would stutter a little, then sure enough the cel would flash, and im knocking... well... its gone, im so happy, and it only cost be $26.50!! WOOHOO!! much praise for the grounding mod, im gonna give it some more driving tomorrow, but i havent gotten knock once at all since doing the mod, and before i could make it knock pretty easy by doing some WOT pulls

I Suggest all of you with UTEC's in your 04's do this mod post haste, its cheap, and it may prevent you from having knock too, all in all, its a great mod, and well worth the few bux spent on it!!
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Old 08-19-2003, 11:26 PM   #2
Scooby Guru
Member#: 8785
Join Date: Jul 2001
Chapter/Region: SWIC
02 [email protected]


GM. What i am going to guess is that in the process of you installing your ground kit you reset the Stock ECU there for clearing its learned ignition values and fuel trims.

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Old 08-19-2003, 11:51 PM   #3
Scooby Specialist
Member#: 9237
Join Date: Aug 2001
Location: Youngstown, Ohio
2008 Saab Turbo X
400+ lbft


ECU didnt get reset

i made sure not to remove the neg terminal, didnt want to have to set the clock and all my radio stations over again, haha.. nice try though
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Old 08-20-2003, 12:36 AM   #4
Tuning Factory Inc.
Member#: 3600
Join Date: Jan 2001
Location: Detroit, Michigan, USA

I have had zero problems on the 04's with the UTEC. ONly the first one since they accidently shipped it with test software but after that zero issues with 3.1 software.
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Old 08-20-2003, 01:29 AM   #5
Uncle Scotty
*** Banned ***
Member#: 16200
Join Date: Mar 2002
OK buy Nates beans


I fabricated my own 'grounding mod' and installed it without re-setting the ECU, and my car ran much more smoothly than before.
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