So here is my dilema, I have a s300 in a p28, which has no knock sensor. I've heard from a bunch of tuning people that they just disable the knock sensor on hondata anyway so I don't need one.

All of my DSM friends as well as the Hondata help file say to use the knock sensor to see if detonation is occuring; however, i've heard from lots of people on here that with forged rods and pistons, you will get knock where there is no knock, and thus can't rely on the knock sensor to tune the car, even on a dyno.

What do I do, just forget about knock, or get a p72 ecu cuz you really should monitor knock as well?

 

Do you have forged pistons?

 

Yes, I have forged pistons.

 

Then I wouldn't worry about tryign to use the knock control. Just use a P28 and disable the knock sensor.

 

I tuned and I never use the stock knock sensor.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by rice is nice &raquo;</TD></TR><TR><TD CLASS="quote">Yes, I have forged pistons.</TD></TR></TABLE>

Forged pistons will produce a knock reading ... Sometimes.

Disable it and your good to go...

 

I just disable the knock sensor. The stock knock sensor isn't robust enough to be used for tuning purposes.

 

as i sit in my car here with a ks code in my ecu and ponder what is to be done, i finally come across a forum that answers my very concern. Yes i have forged pistons at 14:1 compression and yes, i have a knock sensor code. If anyone disagrees with me disabling this ks, please say so, otherwise i'm following the tradition of this forum and disabling it. Thanks for the good info. keep it coming. I'm a noob who is more than likely going to blow up his motor trying to get it running after 3 yrs in the build (on and off, mostly off).

 

Hey, why not have the tuner decide? Or are you the tuner

 

The stock honda Knock sensors are useless. Just disable it.. Start very conservative with your timming and get your fuel dialed in, then slowly bring your timing back in. And when I say conservative timing I mean max timing like 20deg or so WOT max. What fuel are you running? I hope your not trying to do 14:1 on pump ..

 

e85 is the fuel that im running.

 

if the stock honda knock sensors are so useless why does everyone say to use them on all motor setups?

 

Y'know, i dunno why people like/dislike them. I don't know anything about the topic; however, i am willing to make the assumption that they create a signal based on block vibration; therefore, a more built block creates more vibration causing them to be less relaible for output. Thats my guess. It is ONLY a guess. Any corrections are welcome as it will save me the research.

 

i just install mine on my turbo civic.
doesnt hurt to use it.

 

p28 's don't have knock sensors anyways!!!!

 

true, however, s300's look for them i believe if you don't have them turned off. My harness has the knock sensor wired in so the s300 is reading the signal via the p28 as far as i can tell.

 

The OBDI knock sensors are very overactive. Thats why I recomend not to use them.. Keep an eye on your spark plugs and watch what the dyno tells you and you'll be best off. If you go by what the knock sensor says you will be pulling timing when you don't need to. K series is different. Their knock sensing is alot better, but B series knock circuitry. = useless in my opinion..