Procharger False Knock

[speedsun]

I just fixed a guys tune for this exact issue...

His previous tuner had turned off the cars ability to reduce timing on a fast shift.
So there was nothing "false" about it. (It looked like they copied file info from an Auto car)

On this car, once this was corrected car would basically add (4) degrees the entire time
Which is the max I allow it to add.

Cliff Notes:
It came in with "false knock" and would only run 13/14 total degrees.
It left with no knock at all, and would run a full 19 degrees
No mechanical changes to car.

I don't think it's that. Car was fine at first but now it's troubled. Its gotten worse to the point if I step on it hard enough to rock the motor it registers knock

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[ProChargerTECH]

I don't think it's that. Car was fine at first but now it's troubled. Its gotten worse to the point if I step on it hard enough to rock the motor it registers knock

Do you have cats? They could be done for

 

[speedsun]

Do you have cats? They could be done for

Yes I do have cats. During the oil change the other day I tapped the exhaust with my palm and could hear stuff rattling around near the flex pipe on the passenger side. They will be coming off soon anyways so I'll update. Long tubes have been sitting in the garage for almost a year now along with the AWE touring cat back lol.

 

[ProChargerTECH]

Yes I do have cats. During the oil change the other day I tapped the exhaust with my palm and could hear stuff rattling around near the flex pipe on the passenger side. They will be coming off soon anyways so I'll update. Long tubes have been sitting in the garage for almost a year now along with the AWE touring cat back lol.

If you got a rattle coming from them... thats totally your issue.
I would do no more WOT pulls until that is addressed. Otherwise you will be putting a motor in the car.

 

[speedsun]

If you got a rattle coming from them... thats totally your issue.
I would do no more WOT pulls until that is addressed. Otherwise you will be putting a motor in the car.

Longtubes were installed and cats are gone. I did look at them and they weren't blown out so it was probably the flex pipe just making noise. Going to reinstall the original IC pipe and pro flow valve. Only other things I can think of is the clutch? or the belt tensioner. Still had knock on a hard shift but the car is a different animal now with 3" hatless exhaust

 

[Salman]

Have you ever figured out what is the culprit?

 

[Nuxx]

I've about given up on this kit. I've put rubber between the piping and the radiator support. I bought the rubber coupler they include in the kit now that replaces the metal piping on the passenger side. But every hard shift is followed by positive knock. How many of you guys gave up on this?

SAme issues here... we're you ever able to sort it out.... I agree it's frustrating as hell

 

[Zrussian13]

SAme issues here... we're you ever able to sort it out.... I agree it's frustrating as hell

Are you a manual trans car I assume? If you've checked everywhere on the exhaust and all piping it may be resonating from the plate your supercharger mounts to the engine on. Lund told me thats common on centris.

 

[horsepower addiction]

use some stiff motor mounts so the engine can’t rock under hard shifts

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