Long Tube Headers and False Knock

[RT NOMAD]

Have any of you that installed long tube headers discovered that the your car picked up a false knock signal which retards timing, and thus restricts power?

I'd like to install long tubes and run a before and after dyno to monitor the amount of torque and horsepower that they increased. I had just did that with a LMI 392 True CAI.

After the upgrade of intake and headers without a tune, then I wanted to see how much a tune would help.

[Renfrick1]

Yes I have false knock with Lt headers on a 6.1. And yes I did a before and after with the lmi but not on the Dyno at the track and picked up 3/10. My time slips are in his Facebook page
The lmi true cold air is no joke. It works


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[DBL.DWN]

Turn off the knock sensors and runs the test passes.

[Renfrick1]

I left the sensors turned on. AJ said there’s no harm in it. It’s a street car so I don’t care


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[RT NOMAD]

Yes I have false knock with Lt headers on a 6.1. And yes I did a before and after with the lmi but not on the Dyno at the track and picked up 3/10. My time slips are in his Facebook page

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Turn off the knock sensors and runs the test passes.

I left the sensors turned on. AJ said there’s no harm in it. It’s a street car so I don’t care


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Let me try to get some clarity on the above posts:

1. Is it safe to say that both of you have a tune? Isn't that how it is possible to turn the knock sensors on/off?
2. If the knock sensors detect the knock, whether it is an actual knock or a false knock, doesn't the computer pull the timing, and thus lose power?

[Jim McVeigh]

The knock sensors can have their sensitivity altered without turning them completely off. CMR tune required.

[DBL.DWN]

Let me try to get some clarity on the above posts:

1. Is it safe to say that both of you have a tune? Isn't that how it is possible to turn the knock sensors on/off?
2. If the knock sensors detect the knock, whether it is an actual knock or a false knock, doesn't the computer pull the timing, and thus lose power?

Yes the knock sensor will pull timing (and lose power) if it correctly or falsely picks up a knock.
I dont see the need for them.

[Renfrick1]

Yes I have a blower and tune. I left them on for safety. I’m not out to break records. I trust AJ ‘s tune but like I said. I’m out having fun. I don’t care if it pulls timing


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[CruzKing]

Yes I have a blower and tune. I left them on for safety. I’m not out to break records. I trust AJ ‘s tune but like I said. I’m out having fun. I don’t care if it pulls timing


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That explains it!

[Renfrick1]

Let’s race !!


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