OK...I have a 94-95 GSR ECU, I'm not sure what the model number is because the sticker was scratched off. VTEC engages at 5500 RPM and my motor is a 94 GSR. Does anyone know if I can chip my ECU for it not to read the knock sensor? First if you could help me identify what model number my ECU is that would help. Then if you could tell me what kind of chip I would have to buy to make this happen that would be great! Please do not post telling me that I should keep my knock sensor. I just want to know what kind of ECU I have and how to make it not read for the knock sensor without having to retune my car afterwards. Thanks.

 

bump

 

Anyone?

 

Yes you can. Visit http://phearable.net

 

take a pic of the serial # on your ecu, and is it obd-0 or obd-1

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by teler86 &raquo;</TD></TR><TR><TD CLASS="quote">take a pic of the serial # on your ecu, and is it obd-0 or obd-1</TD></TR></TABLE>

It's OBD1, but the serial # sticker is removed. So based on that information if anyone can help me identify my ECU and tell me what steps I need to take to make it not look for the knock sensor I'd greatly appreciate it.

 

the ecu is a p72, i dont know if you can bypass the knock sensor or not but if you run a chipped p28 you will lose the knock sensor.

 

There is one more sticker next to the plug. Check my sig.

 

why do you want to get rid of the knock sensor

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by b18ccivics &raquo;</TD></TR><TR><TD CLASS="quote">why do you want to get rid of the knock sensor</TD></TR></TABLE>

Because I've tried hooking it up and the CEL still comes on after I drive the car for a while. I ran a wire directly from the sensor to the ECU. I'm not sure if it's because I'm not using shielded wires or if the sensor is busted. The sensor with my existing motor worked fine in another car. Nonetheless, I don't want to put up with the hassle.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EGDC2CIVIC &raquo;</TD></TR><TR><TD CLASS="quote">the ecu is a p72, i dont know if you can bypass the knock sensor or not but if you run a chipped p28 you will lose the knock sensor.
</TD></TR></TABLE>

If I get a chipped P28, will I have to retune my car or can it be chipped to the specs of my existing P72? My motor is already tuned (when the knock sensor was working) and I don't want to blow another $500 to tune it again if I don't have to.

 

do you want to blow a motor? how much will that cost?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by b18ccivics &raquo;</TD></TR><TR><TD CLASS="quote">do you want to blow a motor? how much will that cost?</TD></TR></TABLE>

No need for smart remarks buddy. If you have nothing helpful to post, then just sit there.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by som3on3_10 &raquo;</TD></TR><TR><TD CLASS="quote">If I get a chipped P28, will I have to retune my car or can it be chipped to the specs of my existing P72? My motor is already tuned (when the knock sensor was working) and I don't want to blow another $500 to tune it again if I don't have to. </TD></TR></TABLE>

what do you have thats tunable? Are you running hondata or vafc etc?

 

I'm running a VAFC

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by som3on3_10 &raquo;</TD></TR><TR><TD CLASS="quote">

No need for smart remarks buddy. If you have nothing helpful to post, then just sit there.</TD></TR></TABLE>

i didn't try to be smart, i was just saying that if the motor is tuned with the knock sensor working chances are the computer is using it. If you take it off you could run into some detonation on the high end and engines don't like that too much, so if you spend money getting it tuned, then you change your computer it will not be the same even if it is changed to "p72 specs". so the time and money spent tuning is lost.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by b18ccivics &raquo;</TD></TR><TR><TD CLASS="quote">

i didn't try to be smart, i was just saying that if the motor is tuned with the knock sensor working chances are the computer is using it. If you take it off you could run into some detonation on the high end and engines don't like that too much, so if you spend money getting it tuned, then you change your computer it will not be the same even if it is changed to "p72 specs". so the time and money spent tuning is lost.</TD></TR></TABLE>
Honestly I also would take that time to properly wire the knock sensor corectly. I know I went through this years ago on my civic/gsr hybrid. In all seriousness though man, that sensor is there for a reason. Good luck

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by som3on3_10 &raquo;</TD></TR><TR><TD CLASS="quote">I'm running a VAFC</TD></TR></TABLE>

Then you have other issues at hand other then the knock sensor

Ditch the VAFC. Yes you can chip the P72 to disable the knock sensor. Remove the cover on the ECU (the top one) and there is another sticker on the plugs that will show you both the serial number and model number. Many people can chip it for you, including myself.

All your questions have now been answered. end thread.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Hybrid93Eg &raquo;</TD></TR><TR><TD CLASS="quote">

Then you have other issues at hand other then the knock sensor

Ditch the VAFC. Yes you can chip the P72 to disable the knock sensor. Remove the cover on the ECU (the top one) and there is another sticker on the plugs that will show you both the serial number and model number. Many people can chip it for you, including myself.

All your questions have now been answered. end thread.</TD></TR></TABLE>

Don't mean to jack this thread, I noticed alot of guys ditching the knock sensor. Is it REALLY needed or not? Considering the price of it - I am still debating as to wether I should still get one for my build...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by pcguy760 &raquo;</TD></TR><TR><TD CLASS="quote">

Don't mean to jack this thread, I noticed alot of guys ditching the knock sensor. Is it REALLY needed or not? Considering the price of it - I am still debating as to wether I should still get one for my build...</TD></TR></TABLE>

Thats because a lot of people assume that you can get by without it.. and you COULD.. but the question is should you? In my opinion, no. The knock sensor is there for a reason. To detect knock and retard timing in order to control it. If you disable it then there will be no timing retard to control knock and your engine could see some serious damage as a result. What you need to do is ask yourself, is the possability of severe engine damage worth the savings? For me, I have a LOT of money in my engine, the answer was clear.

 

Good answer Hybrid - I think I have made my decision to get one then . This motor is costing me a bit and I don't think I want it to get trashed because of a missing knock sensor.