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help please with injector wiring for tuner nerd knock monitor


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Hi all, Just need info please and I have looked around but no luck   . But for Tuner nerd knock , monitor , I need positive and negative inputs for number 1 injector wires for rpm data ?  I know I could disconnect number 1 wire and find positive with a multi meter . But if somebody knows off the top of their head that would be great ?

Thanks in advance Graham .

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Stab the pickup into the coil wire and use that instead, in my experience it works a lot better.

Also be careful sticking a probe into your map/boost sensor. I had issues with the boost sensor not reading properly causing it to run up to 15psi more than commanded.

 

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1 hour ago, Puffwagon said:

Stab the pickup into the coil wire and use that instead, in my experience it works a lot better.

Also be careful sticking a probe into your map/boost sensor. I had issues with the boost sensor not reading properly causing it to run up to 15psi more than commanded.

 

Hi Puffwagan , thanks heaps . I really appreciate your help ! I would have blown her up by now if it was for your small but important pieces of info! 
 

Thought I would share a potential blow your engine up moment that happened to me today . I had a cheap Chinese boost actuator installed. And I had a turbo smart 12 psi actuator off my F6 sitting in the cupboard. So I pulled it apart and took out the 5 psi spring ( centre one ) to make 7psi . However, being a learner , I didn’t tighten up properly and there was a huge boost leak in the actuator itself ! 
So luckily I pulled 5 deg of timing from the whole load block above 2500 rpm. As I had a run away turbine and saw crazy boost pressure of up to 19 psi !! 
must say that $300 I spend on the 3 r 23 aa , turbo rods and pistons were worth the insurance today !! Anyway fixed now and motor is still purring away !! Phew !! Leaving at 11 psi and I’ll use the knock monitor to check timing as I’ve seen the pcm pull timing even down to 4 deg . So it seems unreliable to tune for knock on the stock knock sensor that I can see ? 
regards Graham! 

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  • 8 months later...
On 8/7/2021 at 7:17 PM, Puffwagon said:

Stab the pickup into the coil wire and use that instead, in my experience it works a lot better.

Also be careful sticking a probe into your map/boost sensor. I had issues with the boost sensor not reading properly causing it to run up to 15psi more than commanded.

 

dosent the coil fire multiple times at idle for the barra?

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