Sukai94

There is a lot of discussion about "reliability mods" for the FD

I haven't seen much talk on the knock sensor so I don't know what to think of it. Yes I have an aftermarket intercooler, downpipe, radiator, ast delete and other things like that but what about the stock knock sensor?

Is the stock knock sensor really that bad? Should I suck it up and get that expensive Safeguard one? Is it worth it? I am not running anymore power than a stock FD.

Howard Coleman

iTrader: (6)

the stock knock sensor works fine. while chasing a knock issue i had occasion to swap 4 of them. they all read the same...

the J&S Knock Sensor/Timing retard is a whole 'nuther thing. i run the latest model. when you are in boost (only) it has the capability of retarding the lead timing 10 degrees if it detects knock.

unlike the stock sensor it is an "active" device.

given your setup, i'd say you are fine w what you have.

howard coleman

Ice_Mazda

Where can i buy an J&S Knock Sensor?

Speed of light

iTrader: (8)

+1, I agree completely. One additional thought: on some stock sensors, the potting (a tar like substance) will cold flow and ooze out. If this has happened to yours, chances are it still works--you can reseal the unit using RTV or something similar with good results. BTW, the factory service manual depicts a test for these sensors.

Smokey The Talon

iTrader: (33)

Howard, I never realized that the J&S system only retarded leading timing. Do you ever think that'd be an issue if it went to a negative split? or do you figure that you'd notice the power loss and lift by that time anyway?

Are there any similar systems that will retard both leading and traling?