Subject	Are you sure j & s uses ionistion for knock control ?
Posted by	ztunerz on December 16, 2011 at 7:38 AM
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In Reply To	Some info on how the J&S knock system works. posted by DVDBURN (MD) on December 16, 2011 at 02:40 AM
Message	If i am correct one just listens to the knock sensor thru headphones and the sensitivity knob controls how much timing it retards. The reason its connected to individual coils is to retard timing not to pick up voltage variance. Harry Formerly yellowzxtt
Follow Ups	Some info on how the J&S knock system works. - DVDBURN (MD) 02:40:03 12/16/11 Very good read.... Thanks for - samsungZ [Houston] 02:46:06 12/16/11 Thank you. (n/m) - Boosted1 06:10:04 12/16/11 Are you sure j & s uses ionistion for knock control ? - ztunerz 07:38:23 12/16/11 Does the system connect in parallel with the ECU to the - MixManMash 08:19:23 12/16/11 Yes, essentially its a knock sensor amplifier with - ztunerz 08:57:43 12/16/11 Thanks for sharing. Anything to protect the engine - JMartz 08:32:39 12/16/11 The knock sensor is connected in parallel to both the - ztunerz 09:03:43 12/16/11 I believe Saab has been using ionization current monitoring - jmt-z 08:39:27 12/16/11 So does bmw with individual timing retard per cylinder - ztunerz 08:59:56 12/16/11 Re: Some info on how the J&S knock system works. - rhombicblue 08:56:14 12/16/11 Agreed thats what i thought (n/m) - ztunerz 09:00:43 12/16/11 My bad. The system does not use Ionisation Current. - DVDBURN (MD) 11:44:33 12/16/11 If knock is detected and timing is retarded - madscientist222 14:07:38 12/16/11 The system is always trying to re-advance......more info - Greg D. (Specialty-Z) 17:25:30 12/16/11 Glad i bought this last night. - madscientist222 19:27:00 12/16/11 Thanks for the purchase - Greg D. (Specialty-Z) 19:49:52 12/16/11 Is it impossible with the lower plenum still on? - madscientist222 10:08:28 12/17/11 Re: Glad i bought this last night. - CmyZ 20:18:41 12/16/11 Relocating the sensor to the top makes the sensor useless... - Greg D. (Specialty-Z) 20:40:46 12/16/11 On the J&S website under the example setup for an MR2 it - zhundred3x 22:18:21 12/16/11 Simpler to pull the trans then the lower plenum. - Bernie (NoVA) 22:44:52 12/16/11 Yeah definitely wasnt planning on removing the lower plenum. - madscientist222 10:14:05 12/17/11 Leave the belt alone. It's miles not age. (n/m) - Bernie (NoVA) 20:31:50 12/17/11
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