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Underbody braces, turbos and more!

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 Post subject: Knock Box
PostPosted: Fri May 08, 2015 9:48 am 
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Joined: Fri Mar 13, 2015 7:23 pm
Posts: 13
Location: Canada
From what I have gleaned, the knock control is different between Mk 1 and 2 cars. On the old style it's the clearly labeled black box on the strut tower, but on the later cars, I can't identify it.I'm going through the harness that came with my engine. I assume when they went away from the Hemi head they changed the ignition too.


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 Post subject: Re: Knock Box
PostPosted: Fri May 08, 2015 11:20 am 
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a.k.a Bum head
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Joined: Mon May 31, 2004 5:29 pm
Posts: 3157
Location: London, ON
Knock circuitry is in the ECU for th Mk2 cars. That's why you can't find it. ;)

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 Post subject: Re: Knock Box
PostPosted: Fri May 08, 2015 4:19 pm 
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Joined: Mon Dec 01, 2003 12:47 pm
Posts: 11669
Location: columbus, ohio
the only ignition components external to the ecu on the mk2 turbo3 are the pick up module in the distributor and the ignitor on the firewall.

everything on the ignition on the mk2 is ecu controlled. there's no vacuum advance and no mechanical advance. the trigger signal is fixed from the distributor and everything else gets generated from mapping internal to the ecu.

the signal from the knock sensor comes out on a red wire connected to pin 12 on the ecu.

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