Turning off Knock sensors
#1
Turning off Knock sensors
How do you guys/gals feel about turning off knock sensors? Time to time around 3500rpm or so, the car will pull back, bog down and then come alive again around 4000rpm. I used a scan tool to watch ignition timing while driving and it drops back to 8-10 degrees. I asked my tuner about the question and we believe my exhaust header is hitting the frame under hard acceleration. He said that he has also seen the issue on crummy fitting headers for Corvette and will see a "false" knock.
Setup:
Stock 5.3
220/224 cam
Longtubes all stock otherwise
Currently at around 27 deg total timing
Setup:
Stock 5.3
220/224 cam
Longtubes all stock otherwise
Currently at around 27 deg total timing
#5
can't you just de-sensitize them a % to reduce false knock? If the header is hitting the frame, you should be able to see where that is happening and take corrective actions.
#7
TECH Enthusiast
Join Date: Apr 2008
Location: Dickinson, Tx
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Get a grinder and jack the car up and cut that ****. Turning off the sensors is pretty dumb unless it's a race car. No gas is the same even from the same station.