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Gizzmo K-mon The Best Tuning Tool You Will Ever Use

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in Engines & Forced Induction

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unique1 Mentor

unique1

Posted
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thanks mate for the info on settings, i was worried when mine was showing 40 knock lol, seems its not such a big deal. I get knock (interference noise) all the time if i plug in another usb cable for my innovate egt logger and autronics data cable which is annoying, not sure how to get around this either?

Guilt-Toy Grand Master

Guilt-Toy

Posted
Posted

I am unsure about this one mate.. my tune laptop only has one usb port lol.. so yeah.. dont let your car knock over 60 and all will be fine.

Good luck with the missing issue, what valve springs are you using and what head ???

unique1 Mentor

unique1

Posted
Posted
I am unsure about this one mate.. my tune laptop only has one usb port lol.. so yeah.. dont let your car knock over 60 and all will be fine.

Good luck with the missing issue, what valve springs are you using and what head ???

i think i may have found a breakthrough on why its misfiring, ill let u know when i chat to a few people about it, im using jun valve springs to suit the cams (came in a kit) and the head is from a rb26.

Guilt-Toy Grand Master

Guilt-Toy

Posted
Posted

I found this on the Gizzmo tuning tools forum..

It says you have to make your car detonate to set the peek level? THATS JUST INSANE!!!

Gizzmo wrote this...

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The knock alert will be the last thing that you set as to do this you need to make a base run without det e.g. conservative timing and fuel in order to get an idea of the vehicles normal backround noise. The centre frequency cannot be determined by the piston size alone, many other factors come into this including cam profile, manifolding, rod ratio etc. In addition to this the center frequency will change with RPM and Load, so, this starts to become a bit grey. To get a starting point you will need to induce detonation but this must be at conservative loads as combustion presures under det go at least 6 times higher than normal combustion pressures. While instigating slight det adjust your center frequency in real time until you assertain where it is loudest, this will be your center frequency for that given load and RPM. Having done this I would recommend setting a bandpass of approx .3 to .4 to allow for variations with RPM and load. To be honest I myself rarely if ever adjust my own Kmon from a center of 6Khz with a bandpass of .5, at that I never miss a ping.

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  • 1 month later...
STATUS Grand Master

STATUS

Posted
  • Author
Posted
I found this on the Gizzmo tuning tools forum..

It says you have to make your car detonate to set the peek level? THATS JUST INSANE!!!

Gizzmo wrote this...

-----

The knock alert will be the last thing that you set as to do this you need to make a base run without det e.g. conservative timing and fuel in order to get an idea of the vehicles normal backround noise. The centre frequency cannot be determined by the piston size alone, many other factors come into this including cam profile, manifolding, rod ratio etc. In addition to this the center frequency will change with RPM and Load, so, this starts to become a bit grey. To get a starting point you will need to induce detonation but this must be at conservative loads as combustion presures under det go at least 6 times higher than normal combustion pressures. While instigating slight det adjust your center frequency in real time until you assertain where it is loudest, this will be your center frequency for that given load and RPM. Having done this I would recommend setting a bandpass of approx .3 to .4 to allow for variations with RPM and load. To be honest I myself rarely if ever adjust my own Kmon from a center of 6Khz with a bandpass of .5, at that I never miss a ping.

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this instructoin set is more for your newb ^^^ someone who cannot interpret the data they are reading, that said inducing a small amount of knock at at conservative loads will do no damage. The best way to do it is in a high gear low and low rpm before any real boost comes in.

Ive been playing with a lot of late model twin turbo BMW's lately (developing flash tunes etc) and the K-mon has paid for it self tenfold.... these things run mid to high 13 AFR's on full boost making well over 200rwkw whichs means they are always close to the threshhold.

Guilt-Toy Grand Master

Guilt-Toy

Posted
Posted
this instructoin set is more for your newb ^^^ someone who cannot interpret the data they are reading, that said inducing a small amount of knock at at conservative loads will do no damage. The best way to do it is in a high gear low and low rpm before any real boost comes in.

Ive been playing with a lot of late model twin turbo BMW's lately (developing flash tunes etc) and the K-mon has paid for it self tenfold.... these things run mid to high 13 AFR's on full boost making well over 200rwkw whichs means they are always close to the threshhold.

so i should induce detonation at low rpm, then tune the frequency till it reads really high knock levels?

did you see my screen shot? does that look like a normal power run to you?

Guilt-Toy Grand Master

Guilt-Toy

Posted
Posted
this instructoin set is more for your newb ^^^ someone who cannot interpret the data they are reading, that said inducing a small amount of knock at at conservative loads will do no damage. The best way to do it is in a high gear low and low rpm before any real boost comes in.

Ive been playing with a lot of late model twin turbo BMW's lately (developing flash tunes etc) and the K-mon has paid for it self tenfold.... these things run mid to high 13 AFR's on full boost making well over 200rwkw whichs means they are always close to the threshhold.

forgot to ask, what kind of knock readouts are you getting from those BMW engines? i would imagine it would be quiet as a mouse.

SS8_Gohan Grand Master

SS8_Gohan

Posted
Posted

ahh Trent, i see you have spoken to Andrew at Southern BM :)

crazy engines aren't they! My dad has a 335i, killer car... just gotta tempt him into some mods :sick:

That's the response i want, i want the BM twin turbo engine response... not sure if that's obtainable with the humble NEO RB25

STATUS Grand Master

STATUS

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Posted (edited)
ahh Trent, i see you have spoken to Andrew at Southern BM :D

crazy engines aren't they! My dad has a 335i, killer car... just gotta tempt him into some mods :blink:

That's the response i want, i want the BM twin turbo engine response... not sure if that's obtainable with the humble NEO RB25

response is wild i will post up one of the graphs in another thread, we have had about 5 bimmers through lately, some older 323's with after market turbos etc... Andrew is the man though, we are doing a step by step build up with one of his customers with a 335i its coming along nicely.

thank you sincerly for the recommendation.

Edited by URAS
SS8_Gohan Grand Master

SS8_Gohan

Posted
Posted

you're welcome :D Andrew is like a walking BMW encyclopedia, very into his work.. which is great, what you want :(

i was down at Southern BM, and i don't know how we got talking about it..... oh wait, that's right... we were talking about tuning and what not as i noticed they didn't have a dyno, and he says he usually takes 35's around the corner to a normal rolling dyno. But he said he was getting a few BS claims from people when he tells them how much power he was getting out of these twin turbo engines, and that's when i mentioned, go see Trent, get it on the dynopack and then NO ONE can argue :blink: He was keen right from the get go :D Glad that he found the time to go see you.

Now, is that sort of response obtainable with the NEO RB?

  • 1 year later...
  • 9 months later...
PM-R33 Grand Master

PM-R33

Posted
Posted

Bit of a thread bump.

Given that it is now a few years on, I wanted to see if the Kmon is still the best choice for aftermarket knock detection?

They have come down in price now given the good Aussie dollar at around $700-$750 delivered so am really considering buying one.

I basically want something easy to use that can also be wired into the Vipec in closed loop so I can have it start pulling timing when high detonation occurs.

So what's the go these days? Still go the Kmon?

PM-R33 Grand Master

PM-R33

Posted
Posted

But is the Knockblock as good as the Kmon? Also I believe it is more than what the Kmon is worth now due to the good USD-AUD.

I can't really find any proper reviews of the Knockblock. Ideally I would like to see the main differences between the Kmon and the Knockblock so I can choose for myself which one is the better option.

My friend has a Kmon that I have had a look at and he is very happy with it. He's using it with a Vipec aswell.

vipec doesnt support a native knock sensor? or an off the shelf knock sensor?

it must be wired in with a controller box?

Yep. So basically it comes down to a Knockblock or a Kmon. But just wanted to make sure there was nothing else out that I wasn't aware of.

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