Knock Level!!!!

[maximtaylor]

Or the knock sensor changed! About half the cars I map have faulty knock sensors.

the occasional high knock reading is fine, probably just noise. if you are getting constantly high readings then its time to get the map checked.

[davegttph1]

My knock on the PFC reads 130 just on idle get about 160 average IIRC.... I put it down to the Knock sensor being knackered because if them levels were duff it wouldnt have got me 1 mile down the road.

[20B_boy]

I\'ve seen 180+, I\'m sure I\'ve seen 200+ but I\'m nor sure what the sensors range is so that may not actually be possible

180+ was at the Nurburging - lifting off on the last straight, theres a video of the fireball some where

My knock sensor goes crazy some times, flashing for ages while cruises dont really see the point in changing it tbh. I know the car\'s map is fine and its done 12000-15000 miles like it, including a lot of dyno time, nos tuning and nurburgring trips

[Wav]

I\'ve seen 180+, I\'m sure I\'ve seen 200+ but I\'m nor sure what the sensors range is so that may not actually be possible

180+ was at the Nurburging - lifting off on the last straight, theres a video of the fireball some where

My knock sensor goes crazy some times, flashing for ages while cruises dont really see the point in changing it tbh. I know the car\'s map is fine and its done 12000-15000 miles like it, including a lot of dyno time, nos tuning and nurburgring trips

LOL, we\'ve seen 199 when letting off with the Stealth\'s new engine, I think 199 may be the highest it can go. Is very stange because we got knock on the old engine around the 90 mark all the time, so we changed the sensor during rebuild and now we get knock between 20-40, but when engine is cold we still get random knocks of 160+ when just cruising or light throttle with the heat warning light flashing like mad. Then at Anglesey doing over 150miles of track driving the heat light didn\'t flash once :rolleyes: So think i\'m going to ignore it from now on and set it to only warn at anything over 150, the fueling is spot on so no worries :cheers

Paul:)

[Red and Single]

It makes me parranoid, but I get random spikes of 130 ish all the time, usually off throttle. I turned the flashing light off as it was annoying me. (very sensitive to flashing red lights !!)

[davehg]

i have a street ported engine running a T04R single turbo and see knock of about 2-4 on cruise on the motorway in 5th at about 70mph. the other day at 1bar boost about 7k rpm i only saw knock of about 4-6 although some days it reaches just over 30 if im on and off the throttle alot through gears etc.

[bnaellis]

Alot of the high knock on deceleration and cruising is to do with how lean the car is running. It will normally be just a few cells that this occurs in richen up fuel in that cell and knock will go right down.
Every fd is different, some can cruis at 14.7:1 no problem others run a bit rough at the afr, some give high knock at that afr some don\'t.

[B9 KLF]

Just add my findings.

Generally during a blast when I let off the gas I can get 110 but not always. This only happened after the rebuild and porting so maybe it is the porting or maybe another duff sensor.

The guys at RE:Worx who did an excellant rebuild do not see it as a problem and thats fine with me.

Keith  :WaveBye

[japjim]

how are you actually getting readings in numbers i just see the bar going up/down or should i say left/right

[maximtaylor]

Press the \'up\' arrow on the moniter screen and you\'ll get peak readings to the right of the live figures.

[cjr]

have seen a reading off 20 with the knock sensor unplugged. go figure oh and the wiring is fine

[Icesurf3r]

Got my highest knock reading of 123 on the way home from work today.. but the knock warning light on dash (which is the heat warning light i believe) didn\'t even blink..

So i\'m hoping everything is ok lol...

[alexb]

Got my highest knock reading of 123 on the way home from work today.. but the knock warning light on dash (which is the heat warning light i believe) didn\'t even blink..

So i\'m hoping everything is ok lol...

Have you turned off the warning flash in Etc -> settings or whatever?

I saw constant (on/off throttle, values dropping while accelerating) 30-40 and peak of 70 on a base map with just a cat-back, my thinking is faulty knock sensor or a \'noisy\' engine, will get it back in with an egt and afr gauge to see exactly what\'s going on so I can decide whether it\'s worth keeping the PFC in for the extra info available while I save up for decat, upgraded intercooler etc

PS if it\'s just noise being picked up by the mic and the std ECU retards ignition based on knock levels how much is the power output being reduced by?

Cheers,
Alex

[D CUPS]

Phew..i just experienced my first high knock of 80...and I thought that was high!......drove it last night and took it up to 180kph top speed, that was fun, lucky there wernt any pigz around.