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2008-11-01 08:35:05 (9 weeks 4 days 17 hours 4 minutes 51 seconds) #1910760 | | view posts since this          #1 

gurov
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gennady gurov

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knocksense MS

this isn't just for megasquirt, it can be used as a general knock detector, the box costs $100 and comes with sensor, and a bright ass LED to blind you when there's knock.

it can signal megasquirt of knock, so that can be logged to take action. currently the firmware doesn't support much in terms of reaction in a fuel-only configuration, but i'm possibly going to make it drop a bit of boost upon each knock when using open loop boost map.
http://gurov.us/shoebox/index.php/2655de00af7bbcae2fc9494e2a8206b8/2008-11-01-knocksense-ms/P1020343.sized.JPG#bottom

you can buy it here: http://www.viatrack.ca/

for what it's worth, it should reliably detect knock below 5000 rpm or so, above that, the engine noises take over. but better than nothing.


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04 turbo @ 14 psi -
MegaSquirt-I standalone - unit #0 (fuel only mode), gsquirt board v1.0, Pivot 3 Drive Throttle Controller,
J&S UltraSafeguard individual cylinder knock suppression system, Autosport Wiring Engine Harness
660cc msd injectors, 255 walbro fuel pump, JGY fuel rail,  t3/t4 57trim, Coolingmist Varicool Progressive Alky controller,
Shurtank with 150psi alky pump.

05 automatic se-r: upcoming turbo project
04 BMW 325xi - daily driver

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2008-11-01 08:37:22 (9 weeks 4 days 17 hours 2 minutes 34 seconds) #1910761 | | view posts since this          #2 

SE-R RACER

Boost..Coming soon

Boricua
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Re: knocksense MS

so we replace our oem sensor with this? i think it's better than the oem just because of the led

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2008-11-01 08:46:04 (9 weeks 4 days 16 hours 53 minutes 52 seconds) #1910766 | | view posts since this          #3 

gurov
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gennady gurov

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Re: knocksense MS

this is in addition to the oem one. you can bolt it up anywhere on the block there's a spot.


http://gurov.us/sig1.png
04 turbo @ 14 psi -
MegaSquirt-I standalone - unit #0 (fuel only mode), gsquirt board v1.0, Pivot 3 Drive Throttle Controller,
J&S UltraSafeguard individual cylinder knock suppression system, Autosport Wiring Engine Harness
660cc msd injectors, 255 walbro fuel pump, JGY fuel rail,  t3/t4 57trim, Coolingmist Varicool Progressive Alky controller,
Shurtank with 150psi alky pump.

05 automatic se-r: upcoming turbo project
04 BMW 325xi - daily driver

Online

 

2008-11-04 03:16:27 (9 weeks 1 day 21 hours 23 minutes 29 seconds) #1913264 | | view posts since this          #4 

Ckouna

Charles Kounakowitch

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Re: knocksense MS

Does the stock Knock sensor work with an EMS-Pro ? Do I need to put the wire in a grounded shield ? (not sure this is the right word :s )

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2008-11-04 03:22:20 (9 weeks 1 day 21 hours 17 minutes 36 seconds) #1913265 | | view posts since this          #5 

gurov
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gennady gurov

v--- russian chicken
Russia
From: Freehold, NJ
Registered: 2006-03-08
Reads: 18156
Posts: 6945
Thanks given: 30
Thanks received: 33
Vehicle: '04 SE-R Spec V
1/4mile: 13.200 @ 107.00
Member #1
Modifications : 58
Awards : 4
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Re: knocksense MS

Ckouna wrote:

Does the stock Knock sensor work with an EMS-Pro ? Do I need to put the wire in a grounded shield ? (not sure this is the right word :s )

yes, you should use a shielded wire.

i found the stock sensor too sensitive on the emspro, as it's an untuned circuit.

i have an atmel max II processor development board on order, i will be trying to make a signal gate for this thing, to only trigger around when the ignition occurs , a-la j&s ultrasafeguard.

we'll see how this works, since j&s is out of production.


http://gurov.us/sig1.png
04 turbo @ 14 psi -
MegaSquirt-I standalone - unit #0 (fuel only mode), gsquirt board v1.0, Pivot 3 Drive Throttle Controller,
J&S UltraSafeguard individual cylinder knock suppression system, Autosport Wiring Engine Harness
660cc msd injectors, 255 walbro fuel pump, JGY fuel rail,  t3/t4 57trim, Coolingmist Varicool Progressive Alky controller,
Shurtank with 150psi alky pump.

05 automatic se-r: upcoming turbo project
04 BMW 325xi - daily driver

Online

 

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This thread has been viewed by: 41 unique users.