Knock sensor?

burmese434 · Post by **burmese434** » Mon Jul 18, 2011 12:20 am

Going to install a knock sensor and was wondering if I need a special one? Also I know you don't want any knock but is some ok?

Post by **Spunkster** » Mon Jul 18, 2011 10:57 am

What ECU are you using?

burmese434 · Post by **burmese434** » Mon Jul 18, 2011 11:56 am

it's a p75 with vtec added

Post by **Spunkster** » Mon Jul 18, 2011 1:24 pm

That ECU does not support knock control. Installing a knock sensor will do nothing.

burmese434 · Post by **burmese434** » Mon Jul 18, 2011 1:40 pm

Man that sucks. I thought it did because if I don't disable it, it will throw a code? So what do I need to do to get one setup in my 96 cx hatch?

Post by **Spunkster** » Mon Jul 18, 2011 2:42 pm

You must use an ECU that has the circuitry for knock control (P30, P72 or P61).

Dr.Auto · Post by **Dr.Auto** » Mon Jul 18, 2011 11:19 pm

Spunkster wrote:You must use an ECU that has the circuitry for knock control (P30, P72 or P61).

So P28 does not have circuitry for a knock sensor? If not this answers my question for why i keep setting a knock sensor code for my P28.

Is it possible to solder in the circuitry for knock control much like for the vtec control?

Post by **Spunkster** » Tue Jul 19, 2011 10:36 am

There is a list of OBD1 ECUs and what they support at http://www.hondata.com/ecus.html

No, you cannot add the circuitry needed, you must get a compatible ECU.

lowblow · Post by **lowblow** » Tue Jul 19, 2011 3:46 pm

What is the Knock sensor use for on P72 ecu?

Post by **Spunkster** » Wed Jul 20, 2011 9:15 am

detecting knock and retarding the timing

lowblow · Post by **lowblow** » Wed Jul 20, 2011 10:12 am

Best for NA or Turbo?

Hondata

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