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JUC33Y S15

S15 knock sensor reading

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Hey guys.

 

got my car back from the tuner the other day. drives great and all. but at time the engine light flashes on hard acceleration and the knock level reaches any where between 50 - 75

 

ive been reading up on the forums and i know anything over 30 is bad.

 

But here is my question. Ive got 275rwkw with External Gate with screamer pipe. do you think the screamer pipe could effect the Knock Sensor??

 

thanks

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Exhaust noise/screamer will not affect detonation/knock.

 

You best get it back to your tuner :yes:

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Exhaust noise/screamer will not affect detonation/knock.

 

You best get it back to your tuner :yes:

 

An ex gate will trick the sensor into thinking its knock, Do you not understand how loud they are?

 

If the air fuel ratio's are good, taking 3-4deg of timing out of the whole map and take it for a drive, if its the same knock level then its just picking up exhaust noise.

 

In some cases even solid engine mounts add to the pfc knock readings.

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^^^ as he said. even a rattle will be picked up by the knock sensor as a knock. in the end u'd prob end up detuning ur car because of small rattles instead of actual knock from engine.

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