yellow dragon

iTrader: (1)

I am getting an HP Tune and between 5K to Redline I am getting crazy knock retard (5 -9.4) all the way through that range. I think it's false knock. I got under the car and the IC Pump mount was missing a bolt so replaced that, then I saw an blot for the Intake Manifold that had backed almost all the way out so i tightend it up and all the other Intake manifold bolts to make sure. Also changed the spark plugs to NGK BKR7EIX. WTF Could it be. I am stumped.

Engine sounds good. No sounds of knock at all. Check with a stetoscope.
Thinking about replaceing the knock sensor but I am not getting a code for it.

It's a 07 SS/SC 2.8, 60#, ZZP Stg 3 HE, Dual pass, opt b, ZZP Phenolic spacer, Bad Mab Header, ZZP 3"down pipe.

Any Thoughts.

CCrunner84

If you pull a bunch of timing does it persist? Might be worth running 110 if it's available to see if it goes away too.

yellow dragon

iTrader: (1)

Yes timing has been pulled to 20 and there is another tune waiting I hear that pulled out another 5 just to see if it does go away. I live in canada and really only have 91 oct available.

TStone

iTrader: (2)

Some people aren't able to run more than 15-16*.. so i'd keep turning timing down and see if you can get rid of it

yellow dragon

iTrader: (1)

well went down to 15 and no change at all.

yellow dragon

iTrader: (1)

Bump!

Bluelightning

iTrader: (8)

Change. Your. Sensor...

yellow dragon

iTrader: (1)

You know i have ordered one. Just trying to solicit opinions and thoughts.

Bluelightning

iTrader: (8)

Mike you are getting up to 15* of knock inbetween normal shifts. Either the sensor is shot or your motor is

rivaladore

iTrader: (7)

No he said he's running 15* of timing and still getting knock

yellow dragon

iTrader: (1)

No he's right 15* of kr3

And I have my timing down to 15* with no success. I am gonna change the spacer and see.

rivaladore

iTrader: (7)

I was getting knock last week and was like wtf! First thing I did was look for metal on metal contact or anything loose in the engine bay. The hose clamp on my intake was rubbing against the option b post by the strut tower, adjusted everything and now its gone. I know I'm turbo now but throwing my situation out there might help.

Bluelightning

iTrader: (8)

Ive been logging him and he's been getting remote tuned by James. Know how sometimes when normal everyday shifting you get a bit of false knock inbetween gears? His car is spiking anywhere between 7-15* of knock when shifting.

rivaladore

iTrader: (7)

Ohhh weird

Bluelightning

iTrader: (8)

Very. And WOT from 5500 to redline the car knocks non stop no matter how much timing you pull out of it. James went from 19* to 15* and he still had the same amount of knock. That's why I say it's the sensor. Or something is knocking internally. But you think you would hear that. The motor sounds fine.

yellow dragon

iTrader: (1)

So I found what has been causing my knock. It was my catalytic converting was plugged. Car is alive now.

Bluelightning

iTrader: (8)

Only took 2 years to get ya to find time to chase it down

Glad it's fixed now.

blueLNFftw

iTrader: (16)

How did you not notice the power loss?

yellow dragon

iTrader: (1)

Oh I did notice power loss. I just didn't notice the higher boost levels due to the blockage lol. feel pretty stupid about it but its fixed now.