ses flashing at wot

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Oct 26, 2009, 05:06 AM

#16

TTP Engineering

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Quote:

Originally Posted by JohnBradley

I see the use of phantom knock needs clarified. Phantom knock is knock that happens intermittently with no other signs of a cause. If it is misfiring and the knocklight is going nuts its a very good sign that the car is actually knocking. This seems to be very repeatable so its not phantom at all.

The P0172 is from injectors that arent scaled correctly and its maxing the trims or close to maxing them generally. Seems to me that it needs the timing dropped and the injectors tweaked.

Good information Aaron. I laugh when I see people writing phantom knock all the time.

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Oct 26, 2009, 05:24 AM

#17

MR. EVO MR

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Quote:

Originally Posted by evillancer06

I have to get my hands on a air compressor for the boost leak. You guys recommend testing from the compressor or the tb or both?

a bicycle pump works too, why spend the money if you dont have to?

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Oct 26, 2009, 06:50 AM

#18

evillancer06

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ok so if it is real knock, what can i do to eliminate this? I have looked around and seen suggestions of changing plugs, changing actual knock sensor. I just want to know what i can do on my behalf to try and eliminate this. The only thing is i am thinking that its pulling timing and all because of the fluctuation of boost that i have. I think the crazy boost spikes is somehow triggering the pulling of timing. Please correct me if im wrong.

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Oct 26, 2009, 06:55 AM

#19

fugiwara

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What your tuner Jestr say about this?

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Oct 26, 2009, 07:56 AM

#20

evillancer06

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here is a dyno graph of one of the runs. Notice on the torque graph the up and down fluctuation. It is due to the boost fluctuation. My ses dont start flashing untill around 6000 rpm. So from what i see boost is fluctuating and ses is flashing all around the same rpm.

Last edited by evillancer06; Oct 26, 2009 at 09:45 AM.

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